171 files changed, 451 insertions, 3505 deletions
diff --git a/fs/9p/conv.c b/fs/9p/conv.c
index a767e05b60bf..1e898144eb7c 100644
--- a/fs/9p/conv.c
+++ b/fs/9p/conv.c
@@ -24,7 +24,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/9p/error.c b/fs/9p/error.c
index 981fe8ecd780..ae91555c1558 100644
--- a/fs/9p/error.c
+++ b/fs/9p/error.c
@@ -27,7 +27,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/list.h>
diff --git a/fs/9p/fcall.c b/fs/9p/fcall.c
index 6f2617820a4e..8556097fcda8 100644
--- a/fs/9p/fcall.c
+++ b/fs/9p/fcall.c
@@ -24,7 +24,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/9p/fcprint.c b/fs/9p/fcprint.c
index 583e827baebd..34b96114a28d 100644
--- a/fs/9p/fcprint.c
+++ b/fs/9p/fcprint.c
@@ -21,7 +21,6 @@
 *  Boston, MA  02111-1301  USA
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index b7608af07ce8..70492ccb4385 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -20,7 +20,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/9p/mux.c b/fs/9p/mux.c
index 8d45ed668837..90a79c784549 100644
--- a/fs/9p/mux.c
+++ b/fs/9p/mux.c
@@ -23,7 +23,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/9p/trans_fd.c b/fs/9p/trans_fd.c
index 94e0a7fd9fc2..34d43355beb7 100644
--- a/fs/9p/trans_fd.c
+++ b/fs/9p/trans_fd.c
@@ -25,7 +25,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/in.h>
 #include <linux/module.h>
 #include <linux/net.h>
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index d37416eb5791..22f7ccd58d38 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -23,7 +23,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index d4f0aa3c87f2..9dfd259a70b4 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -31,7 +31,6 @@
 #include <linux/string.h>
 #include <linux/smp_lock.h>
 #include <linux/inet.h>
-#include <linux/version.h>
 #include <linux/pagemap.h>
 #include <linux/idr.h>
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 1a8e46084f0e..c3c47eda7574 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -31,7 +31,6 @@
 #include <linux/string.h>
 #include <linux/smp_lock.h>
 #include <linux/inet.h>
-#include <linux/version.h>
 #include <linux/list.h>
 #include <asm/uaccess.h>
 #include <linux/idr.h>
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 8b15bb22caca..63320d4e15d2 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -25,7 +25,6 @@
 */
 #include <linux/kernel.h>
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/Kconfig b/fs/Kconfig
index 6dc8cfd6d80c..53f5c6d61121 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -326,7 +326,7 @@ source "fs/xfs/Kconfig"
 config OCFS2_FS
        tristate "OCFS2 file system support (EXPERIMENTAL)"
-        depends on NET && EXPERIMENTAL
+        depends on NET && SYSFS && EXPERIMENTAL
        select CONFIGFS_FS
        select JBD
        select CRC32
@@ -356,6 +356,16 @@ config OCFS2_FS
                  - POSIX ACLs
                  - readpages / writepages (not user visible)
+config OCFS2_DEBUG_MASKLOG
+        bool "OCFS2 logging support"
+        depends on OCFS2_FS
+        default y
+        help
+          The ocfs2 filesystem has an extensive logging system.  The system
+          allows selection of events to log via files in /sys/o2cb/logmask/.
+          This option will enlarge your kernel, but it allows debugging of
+          ocfs2 filesystem issues.
 config MINIX_FS
        tristate "Minix fs support"
        help
diff --git a/fs/Makefile b/fs/Makefile
index d0ea6bfccf29..89135428a539 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -66,7 +66,6 @@ obj-$(CONFIG_MSDOS_FS)		+= msdos/
 obj-$(CONFIG_VFAT_FS)           += vfat/
 obj-$(CONFIG_BFS_FS)            += bfs/
 obj-$(CONFIG_ISO9660_FS)        += isofs/
-obj-$(CONFIG_DEVFS_FS)          += devfs/
 obj-$(CONFIG_HFSPLUS_FS)        += hfsplus/ # Before hfs to find wrapped HFS+
 obj-$(CONFIG_HFS_FS)            += hfs/
 obj-$(CONFIG_VXFS_FS)           += freevxfs/
diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 7b075fc397da..d3c7905b2ddc 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -9,7 +9,6 @@
 *
 *  Common directory handling for ADFS
 */
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
 #include <linux/adfs_fs.h>
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index a83e889a97cd..fcaeead9696b 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -325,7 +325,7 @@ befs_read_inode(struct inode *inode)
        if (!bh) {
                befs_error(sb, "unable to read inode block - "
                           "inode = %lu", inode->i_ino);
-                goto unaquire_none;
+                goto unacquire_none;
        }
        raw_inode = (befs_inode *) bh->b_data;
@@ -334,7 +334,7 @@ befs_read_inode(struct inode *inode)
        if (befs_check_inode(sb, raw_inode, inode->i_ino) != BEFS_OK) {
                befs_error(sb, "Bad inode: %lu", inode->i_ino);
-                goto unaquire_bh;
+                goto unacquire_bh;
        }
        inode->i_mode = (umode_t) fs32_to_cpu(sb, raw_inode->mode);
@@ -402,17 +402,17 @@ befs_read_inode(struct inode *inode)
                befs_error(sb, "Inode %lu is not a regular file, "
                           "directory or symlink. THAT IS WRONG! BeFS has no "
                           "on disk special files", inode->i_ino);
-                goto unaquire_bh;
+                goto unacquire_bh;
        }
        brelse(bh);
        befs_debug(sb, "<--- befs_read_inode()");
        return;
-      unaquire_bh:
+      unacquire_bh:
        brelse(bh);
-      unaquire_none:
+      unacquire_none:
        make_bad_inode(inode);
        befs_debug(sb, "<--- befs_read_inode() - Bad inode");
        return;
@@ -761,14 +761,14 @@ befs_fill_super(struct super_block *sb, void *data, int silent)
                printk(KERN_ERR
                       "BeFS(%s): Unable to allocate memory for private "
                       "portion of superblock. Bailing.\n", sb->s_id);
-                goto unaquire_none;
+                goto unacquire_none;
        }
        befs_sb = BEFS_SB(sb);
        memset(befs_sb, 0, sizeof(befs_sb_info));
        if (!parse_options((char *) data, &befs_sb->mount_opts)) {
                befs_error(sb, "cannot parse mount options");
-                goto unaquire_priv_sbp;
+                goto unacquire_priv_sbp;
        }
        befs_debug(sb, "---> befs_fill_super()");
@@ -794,7 +794,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent)
        if (!(bh = sb_bread(sb, sb_block))) {
                befs_error(sb, "unable to read superblock");
-                goto unaquire_priv_sbp;
+                goto unacquire_priv_sbp;
        }
        /* account for offset of super block on x86 */
@@ -809,20 +809,20 @@ befs_fill_super(struct super_block *sb, void *data, int silent)
        }
        if (befs_load_sb(sb, disk_sb) != BEFS_OK)
-                goto unaquire_bh;
+                goto unacquire_bh;
        befs_dump_super_block(sb, disk_sb);
        brelse(bh);
        if (befs_check_sb(sb) != BEFS_OK)
-                goto unaquire_priv_sbp;
+                goto unacquire_priv_sbp;
        if( befs_sb->num_blocks > ~((sector_t)0) ) {
                befs_error(sb, "blocks count: %Lu "
                        "is larger than the host can use",
                        befs_sb->num_blocks);
-                goto unaquire_priv_sbp;
+                goto unacquire_priv_sbp;
        }
        /*
@@ -838,7 +838,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent)
        if (!sb->s_root) {
                iput(root);
                befs_error(sb, "get root inode failed");
-                goto unaquire_priv_sbp;
+                goto unacquire_priv_sbp;
        }
        /* load nls library */
@@ -860,13 +860,13 @@ befs_fill_super(struct super_block *sb, void *data, int silent)
        return 0;
 /*****************/
-      unaquire_bh:
+      unacquire_bh:
        brelse(bh);
-      unaquire_priv_sbp:
+      unacquire_priv_sbp:
        kfree(sb->s_fs_info);
-      unaquire_none:
+      unacquire_none:
        sb->s_fs_info = NULL;
        return -EINVAL;
 }
@@ -925,18 +925,18 @@ init_befs_fs(void)
        err = befs_init_inodecache();
        if (err)
-                goto unaquire_none;
+                goto unacquire_none;
        err = register_filesystem(&befs_fs_type);
        if (err)
-                goto unaquire_inodecache;
+                goto unacquire_inodecache;
        return 0;
-unaquire_inodecache:
+unacquire_inodecache:
        befs_destroy_inodecache();
-unaquire_none:
+unacquire_none:
        return err;
 }
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index c94d52eafd1b..a62fd4018a20 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -16,7 +16,6 @@
 */
 #include <linux/module.h>
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
diff --git a/fs/binfmt_som.c b/fs/binfmt_som.c
index 00a91dc25d16..32b5d625ce9c 100644
--- a/fs/binfmt_som.c
+++ b/fs/binfmt_som.c
@@ -32,7 +32,6 @@
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
-#include <linux/config.h>
 #include <linux/elf.h>
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 7f7600e2381c..9633a490dab0 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -5,14 +5,12 @@
 *  Copyright (C) 2001  Andrea Arcangeli <andrea@suse.de> SuSE
 */
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/fcntl.h>
 #include <linux/slab.h>
 #include <linux/kmod.h>
 #include <linux/major.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/smp_lock.h>
 #include <linux/highmem.h>
 #include <linux/blkdev.h>
diff --git a/fs/buffer.c b/fs/buffer.c
index e9994722f4a3..3660dcb97591 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -18,7 +18,6 @@
 * async buffer flushing, 1999 Andrea Arcangeli <andrea@suse.de>
 */
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/syscalls.h>
 #include <linux/fs.h>
@@ -852,7 +851,7 @@ int __set_page_dirty_buffers(struct page *page)
                write_lock_irq(&mapping->tree_lock);
                if (page->mapping) {    /* Race with truncate? */
                        if (mapping_cap_account_dirty(mapping))
-                                inc_page_state(nr_dirty);
+                                __inc_zone_page_state(page, NR_FILE_DIRTY);
                        radix_tree_tag_set(&mapping->page_tree,
                                                page_index(page),
                                                PAGECACHE_TAG_DIRTY);
diff --git a/fs/char_dev.c b/fs/char_dev.c
index f3418f7a6e9d..a4cbc6706ef0 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -4,7 +4,6 @@
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/slab.h>
@@ -14,7 +13,6 @@
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/seq_file.h>
 #include <linux/kobject.h>
diff --git a/fs/cifs/asn1.c b/fs/cifs/asn1.c
index 031cdf293256..2e75883b7f54 100644
--- a/fs/cifs/asn1.c
+++ b/fs/cifs/asn1.c
@@ -17,7 +17,6 @@
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 5861eb42e626..944d2b9e092d 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -324,7 +324,7 @@ out:
        return rc;
 }
-/* Try to reaquire byte range locks that were released when session */
+/* Try to reacquire byte range locks that were released when session */
 /* to server was lost */
 static int cifs_relock_file(struct cifsFileInfo *cifsFile)
 {
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index 7caee8d8ea3b..803aacf0d49c 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -28,7 +28,6 @@
 #include <linux/delay.h>
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/vmalloc.h>
 #include <linux/fs.h>
 #include <linux/file.h>
@@ -365,22 +364,12 @@ static int init_coda_psdev(void)
                err = PTR_ERR(coda_psdev_class);
                goto out_chrdev;
        }               
-        devfs_mk_dir ("coda");
+        for (i = 0; i < MAX_CODADEVS; i++)
-        for (i = 0; i < MAX_CODADEVS; i++) {
                class_device_create(coda_psdev_class, NULL,
                                MKDEV(CODA_PSDEV_MAJOR,i), NULL, "cfs%d", i);
-                err = devfs_mk_cdev(MKDEV(CODA_PSDEV_MAJOR, i),
-                                S_IFCHR|S_IRUSR|S_IWUSR, "coda/%d", i);
-                if (err)
-                        goto out_class;
-        }
        coda_sysctl_init();
        goto out;
-out_class:
-        for (i = 0; i < MAX_CODADEVS; i++) 
-                class_device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i));
-        class_destroy(coda_psdev_class);
 out_chrdev:
        unregister_chrdev(CODA_PSDEV_MAJOR, "coda");
 out:
@@ -419,12 +408,9 @@ static int __init init_coda(void)
        }
        return 0;
 out:
-        for (i = 0; i < MAX_CODADEVS; i++) {
+        for (i = 0; i < MAX_CODADEVS; i++)
                class_device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i));
-                devfs_remove("coda/%d", i);
-        }
        class_destroy(coda_psdev_class);
-        devfs_remove("coda");
        unregister_chrdev(CODA_PSDEV_MAJOR, "coda");
        coda_sysctl_clean();
 out1:
@@ -441,12 +427,9 @@ static void __exit exit_coda(void)
        if ( err != 0 ) {
                printk("coda: failed to unregister filesystem\n");
        }
-        for (i = 0; i < MAX_CODADEVS; i++) {
+        for (i = 0; i < MAX_CODADEVS; i++)
                class_device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i));
-                devfs_remove("coda/%d", i);
-        }
        class_destroy(coda_psdev_class);
-        devfs_remove("coda");
        unregister_chrdev(CODA_PSDEV_MAJOR, "coda");
        coda_sysctl_clean();
        coda_destroy_inodecache();
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
index f0b10757288f..1c82e9a7d7c8 100644
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -11,7 +11,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/mm.h>
 #include <linux/sysctl.h>
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index d8ecfedef189..4063a9396977 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -10,7 +10,6 @@
 * ioctls.
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/compat.h>
 #include <linux/kernel.h>
@@ -44,7 +43,6 @@
 #include <linux/loop.h>
 #include <linux/auto_fs.h>
 #include <linux/auto_fs4.h>
-#include <linux/devfs_fs.h>
 #include <linux/tty.h>
 #include <linux/vt_kern.h>
 #include <linux/fb.h>
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 207f8006fd6c..df025453dd97 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -211,7 +211,7 @@ static void remove_dir(struct dentry * d)
        struct configfs_dirent * sd;
        sd = d->d_fsdata;
-        list_del_init(&sd->s_sibling);
+        list_del_init(&sd->s_sibling);
        configfs_put(sd);
        if (d->d_inode)
                simple_rmdir(parent->d_inode,d);
@@ -330,7 +330,7 @@ static int configfs_detach_prep(struct dentry *dentry)
                        ret = configfs_detach_prep(sd->s_dentry);
                        if (!ret)
-                                continue;
+                                continue;
                } else
                        ret = -ENOTEMPTY;
@@ -931,7 +931,7 @@ int configfs_rename_dir(struct config_item * item, const char *new_name)
        new_dentry = lookup_one_len(new_name, parent, strlen(new_name));
        if (!IS_ERR(new_dentry)) {
-                if (!new_dentry->d_inode) {
+                if (!new_dentry->d_inode) {
                        error = config_item_set_name(item, "%s", new_name);
                        if (!error) {
                                d_add(new_dentry, NULL);
diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c
index e5512e295cf2..fb65e0800a86 100644
--- a/fs/configfs/symlink.c
+++ b/fs/configfs/symlink.c
@@ -66,7 +66,7 @@ static void fill_item_path(struct config_item * item, char * buffer, int length)
 }
 static int create_link(struct config_item *parent_item,
-                       struct config_item *item,
+                       struct config_item *item,
                       struct dentry *dentry)
 {
        struct configfs_dirent *target_sd = item->ci_dentry->d_fsdata;
diff --git a/fs/dcache.c b/fs/dcache.c
index 48b44a714b35..c6e3535be192 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -14,7 +14,6 @@
 * the dcache entry is deleted or garbage collected.
 */
-#include <linux/config.h>
 #include <linux/syscalls.h>
 #include <linux/string.h>
 #include <linux/mm.h>
diff --git a/fs/dcookies.c b/fs/dcookies.c
index 8749339bf4f6..0c4b0674854b 100644
--- a/fs/dcookies.c
+++ b/fs/dcookies.c
@@ -12,7 +12,6 @@
 * to the pair and can be looked up from userspace.
 */
-#include <linux/config.h>
 #include <linux/syscalls.h>
 #include <linux/module.h>
 #include <linux/slab.h>
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 66a505422e5c..39640fd03458 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -13,7 +13,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/pagemap.h>
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 6fa1e04f8415..e8ae3042b806 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -16,7 +16,6 @@
 /* uncomment to get debug messages from the debug filesystem, ah the irony. */
 /* #define DEBUG */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/mount.h>
diff --git a/fs/devfs/Makefile b/fs/devfs/Makefile
deleted file mode 100644
index 6dd8d1245e2c..000000000000
--- a/fs/devfs/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-#
-# Makefile for the linux devfs-filesystem routines.
-#
-obj-$(CONFIG_DEVFS_FS) += devfs.o
-devfs-objs := base.o util.o
diff --git a/fs/devfs/base.c b/fs/devfs/base.c
deleted file mode 100644
index 51a97f132745..000000000000
--- a/fs/devfs/base.c
+++ /dev/null
@@ -1,2836 +0,0 @@
-/*  devfs (Device FileSystem) driver.
-    Copyright (C) 1998-2002  Richard Gooch
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-    You should have received a copy of the GNU Library General Public
-    License along with this library; if not, write to the Free
-    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-    Richard Gooch may be reached by email at  rgooch@atnf.csiro.au
-    The postal address is:
-      Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
-    ChangeLog
-    19980110   Richard Gooch <rgooch@atnf.csiro.au>
-               Original version.
-  v0.1
-    19980111   Richard Gooch <rgooch@atnf.csiro.au>
-               Created per-fs inode table rather than using inode->u.generic_ip
-  v0.2
-    19980111   Richard Gooch <rgooch@atnf.csiro.au>
-               Created .epoch inode which has a ctime of 0.
-               Fixed loss of named pipes when dentries lost.
-               Fixed loss of inode data when devfs_register() follows mknod().
-  v0.3
-    19980111   Richard Gooch <rgooch@atnf.csiro.au>
-               Fix for when compiling with CONFIG_KERNELD.
-    19980112   Richard Gooch <rgooch@atnf.csiro.au>
-               Fix for readdir() which sometimes didn't show entries.
-               Added <<tolerant>> option to <devfs_register>.
-  v0.4
-    19980113   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_fill_file> function.
-  v0.5
-    19980115   Richard Gooch <rgooch@atnf.csiro.au>
-               Added subdirectory support. Major restructuring.
-    19980116   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed <find_by_dev> to not search major=0,minor=0.
-               Added symlink support.
-  v0.6
-    19980120   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_mk_dir> function and support directory unregister
-    19980120   Richard Gooch <rgooch@atnf.csiro.au>
-               Auto-ownership uses real uid/gid rather than effective uid/gid.
-  v0.7
-    19980121   Richard Gooch <rgooch@atnf.csiro.au>
-               Supported creation of sockets.
-  v0.8
-    19980122   Richard Gooch <rgooch@atnf.csiro.au>
-               Added DEVFS_FL_HIDE_UNREG flag.
-               Interface change to <devfs_mk_symlink>.
-               Created <devfs_symlink> to support symlink(2).
-  v0.9
-    19980123   Richard Gooch <rgooch@atnf.csiro.au>
-               Added check to <devfs_fill_file> to check inode is in devfs.
-               Added optional traversal of symlinks.
-  v0.10
-    19980124   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_get_flags> and <devfs_set_flags>.
-  v0.11
-    19980125   C. Scott Ananian <cananian@alumni.princeton.edu>
-               Created <devfs_find_handle>.
-    19980125   Richard Gooch <rgooch@atnf.csiro.au>
-               Allow removal of symlinks.
-  v0.12
-    19980125   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_set_symlink_destination>.
-    19980126   Richard Gooch <rgooch@atnf.csiro.au>
-               Moved DEVFS_SUPER_MAGIC into header file.
-               Added DEVFS_FL_HIDE flag.
-               Created <devfs_get_maj_min>.
-               Created <devfs_get_handle_from_inode>.
-               Fixed minor bug in <find_by_dev>.
-    19980127   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed interface to <find_by_dev>, <find_entry>,
-               <devfs_unregister>, <devfs_fill_file> and <devfs_find_handle>.
-               Fixed inode times when symlink created with symlink(2).
-  v0.13
-    19980129   C. Scott Ananian <cananian@alumni.princeton.edu>
-               Exported <devfs_set_symlink_destination>, <devfs_get_maj_min>
-               and <devfs_get_handle_from_inode>.
-    19980129   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_unlink> to support unlink(2).
-  v0.14
-    19980129   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed kerneld support for entries in devfs subdirectories.
-    19980130   Richard Gooch <rgooch@atnf.csiro.au>
-               Bugfixes in <call_kerneld>.
-  v0.15
-    19980207   Richard Gooch <rgooch@atnf.csiro.au>
-               Call kerneld when looking up unregistered entries.
-  v0.16
-    19980326   Richard Gooch <rgooch@atnf.csiro.au>
-               Modified interface to <devfs_find_handle> for symlink traversal.
-  v0.17
-    19980331   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed persistence bug with device numbers for manually created
-               device files.
-               Fixed problem with recreating symlinks with different content.
-  v0.18
-    19980401   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed to CONFIG_KMOD.
-               Hide entries which are manually unlinked.
-               Always invalidate devfs dentry cache when registering entries.
-               Created <devfs_rmdir> to support rmdir(2).
-               Ensure directories created by <devfs_mk_dir> are visible.
-  v0.19
-    19980402   Richard Gooch <rgooch@atnf.csiro.au>
-               Invalidate devfs dentry cache when making directories.
-               Invalidate devfs dentry cache when removing entries.
-               Fixed persistence bug with fifos.
-  v0.20
-    19980421   Richard Gooch <rgooch@atnf.csiro.au>
-               Print process command when debugging kerneld/kmod.
-               Added debugging for register/unregister/change operations.
-    19980422   Richard Gooch <rgooch@atnf.csiro.au>
-               Added "devfs=" boot options.
-  v0.21
-    19980426   Richard Gooch <rgooch@atnf.csiro.au>
-               No longer lock/unlock superblock in <devfs_put_super>.
-               Drop negative dentries when they are released.
-               Manage dcache more efficiently.
-  v0.22
-    19980427   Richard Gooch <rgooch@atnf.csiro.au>
-               Added DEVFS_FL_AUTO_DEVNUM flag.
-  v0.23
-    19980430   Richard Gooch <rgooch@atnf.csiro.au>
-               No longer set unnecessary methods.
-  v0.24
-    19980504   Richard Gooch <rgooch@atnf.csiro.au>
-               Added PID display to <call_kerneld> debugging message.
-               Added "after" debugging message to <call_kerneld>.
-    19980519   Richard Gooch <rgooch@atnf.csiro.au>
-               Added "diread" and "diwrite" boot options.
-    19980520   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed persistence problem with permissions.
-  v0.25
-    19980602   Richard Gooch <rgooch@atnf.csiro.au>
-               Support legacy device nodes.
-               Fixed bug where recreated inodes were hidden.
-  v0.26
-    19980602   Richard Gooch <rgooch@atnf.csiro.au>
-               Improved debugging in <get_vfs_inode>.
-    19980607   Richard Gooch <rgooch@atnf.csiro.au>
-               No longer free old dentries in <devfs_mk_dir>.
-               Free all dentries for a given entry when deleting inodes.
-  v0.27
-    19980627   Richard Gooch <rgooch@atnf.csiro.au>
-               Limit auto-device numbering to majors 128 to 239.
-  v0.28
-    19980629   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed inode times persistence problem.
-  v0.29
-    19980704   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed spelling in <devfs_readlink> debug.
-               Fixed bug in <devfs_setup> parsing "dilookup".
-  v0.30
-    19980705   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed devfs inode leak when manually recreating inodes.
-               Fixed permission persistence problem when recreating inodes.
-  v0.31
-    19980727   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed harmless "unused variable" compiler warning.
-               Fixed modes for manually recreated device nodes.
-  v0.32
-    19980728   Richard Gooch <rgooch@atnf.csiro.au>
-               Added NULL devfs inode warning in <devfs_read_inode>.
-               Force all inode nlink values to 1.
-  v0.33
-    19980730   Richard Gooch <rgooch@atnf.csiro.au>
-               Added "dimknod" boot option.
-               Set inode nlink to 0 when freeing dentries.
-               Fixed modes for manually recreated symlinks.
-  v0.34
-    19980802   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bugs in recreated directories and symlinks.
-  v0.35
-    19980806   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bugs in recreated device nodes.
-    19980807   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bug in currently unused <devfs_get_handle_from_inode>.
-               Defined new <devfs_handle_t> type.
-               Improved debugging when getting entries.
-               Fixed bug where directories could be emptied.
-  v0.36
-    19980809   Richard Gooch <rgooch@atnf.csiro.au>
-               Replaced dummy .epoch inode with .devfsd character device.
-    19980810   Richard Gooch <rgooch@atnf.csiro.au>
-               Implemented devfsd protocol revision 0.
-  v0.37
-    19980819   Richard Gooch <rgooch@atnf.csiro.au>
-               Added soothing message to warning in <devfs_d_iput>.
-  v0.38
-    19980829   Richard Gooch <rgooch@atnf.csiro.au>
-               Use GCC extensions for structure initialisations.
-               Implemented async open notification.
-               Incremented devfsd protocol revision to 1.
-  v0.39
-    19980908   Richard Gooch <rgooch@atnf.csiro.au>
-               Moved async open notification to end of <devfs_open>.
-  v0.40
-    19980910   Richard Gooch <rgooch@atnf.csiro.au>
-               Prepended "/dev/" to module load request.
-               Renamed <call_kerneld> to <call_kmod>.
-  v0.41
-    19980910   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed typo "AYSNC" -> "ASYNC".
-  v0.42
-    19980910   Richard Gooch <rgooch@atnf.csiro.au>
-               Added open flag for files.
-  v0.43
-    19980927   Richard Gooch <rgooch@atnf.csiro.au>
-               Set i_blocks=0 and i_blksize=1024 in <devfs_read_inode>.
-  v0.44
-    19981005   Richard Gooch <rgooch@atnf.csiro.au>
-               Added test for empty <<name>> in <devfs_find_handle>.
-               Renamed <generate_path> to <devfs_generate_path> and published.
-  v0.45
-    19981006   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_get_fops>.
-  v0.46
-    19981007   Richard Gooch <rgooch@atnf.csiro.au>
-               Limit auto-device numbering to majors 144 to 239.
-  v0.47
-    19981010   Richard Gooch <rgooch@atnf.csiro.au>
-               Updated <devfs_follow_link> for VFS change in 2.1.125.
-  v0.48
-    19981022   Richard Gooch <rgooch@atnf.csiro.au>
-               Created DEVFS_ FL_COMPAT flag.
-  v0.49
-    19981023   Richard Gooch <rgooch@atnf.csiro.au>
-               Created "nocompat" boot option.
-  v0.50
-    19981025   Richard Gooch <rgooch@atnf.csiro.au>
-               Replaced "mount" boot option with "nomount".
-  v0.51
-    19981110   Richard Gooch <rgooch@atnf.csiro.au>
-               Created "only" boot option.
-  v0.52
-    19981112   Richard Gooch <rgooch@atnf.csiro.au>
-               Added DEVFS_FL_REMOVABLE flag.
-  v0.53
-    19981114   Richard Gooch <rgooch@atnf.csiro.au>
-               Only call <scan_dir_for_removable> on first call to
-               <devfs_readdir>.
-  v0.54
-    19981205   Richard Gooch <rgooch@atnf.csiro.au>
-               Updated <devfs_rmdir> for VFS change in 2.1.131.
-  v0.55
-    19981218   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_mk_compat>.
-    19981220   Richard Gooch <rgooch@atnf.csiro.au>
-               Check for partitions on removable media in <devfs_lookup>.
-  v0.56
-    19990118   Richard Gooch <rgooch@atnf.csiro.au>
-               Added support for registering regular files.
-               Created <devfs_set_file_size>.
-               Update devfs inodes from entries if not changed through FS.
-  v0.57
-    19990124   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed <devfs_fill_file> to only initialise temporary inodes.
-               Trap for NULL fops in <devfs_register>.
-               Return -ENODEV in <devfs_fill_file> for non-driver inodes.
-  v0.58
-    19990126   Richard Gooch <rgooch@atnf.csiro.au>
-               Switched from PATH_MAX to DEVFS_PATHLEN.
-  v0.59
-    19990127   Richard Gooch <rgooch@atnf.csiro.au>
-               Created "nottycompat" boot option.
-  v0.60
-    19990318   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed <devfsd_read> to not overrun event buffer.
-  v0.61
-    19990329   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_auto_unregister>.
-  v0.62
-    19990330   Richard Gooch <rgooch@atnf.csiro.au>
-               Don't return unregistred entries in <devfs_find_handle>.
-               Panic in <devfs_unregister> if entry unregistered.
-    19990401   Richard Gooch <rgooch@atnf.csiro.au>
-               Don't panic in <devfs_auto_unregister> for duplicates.
-  v0.63
-    19990402   Richard Gooch <rgooch@atnf.csiro.au>
-               Don't unregister already unregistered entries in <unregister>.
-  v0.64
-    19990510   Richard Gooch <rgooch@atnf.csiro.au>
-               Disable warning messages when unable to read partition table for
-               removable media.
-  v0.65
-    19990512   Richard Gooch <rgooch@atnf.csiro.au>
-               Updated <devfs_lookup> for VFS change in 2.3.1-pre1.
-               Created "oops-on-panic" boot option.
-               Improved debugging in <devfs_register> and <devfs_unregister>.
-  v0.66
-    19990519   Richard Gooch <rgooch@atnf.csiro.au>
-               Added documentation for some functions.
-    19990525   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed "oops-on-panic" boot option: now always Oops.
-  v0.67
-    19990531   Richard Gooch <rgooch@atnf.csiro.au>
-               Improved debugging in <devfs_register>.
-  v0.68
-    19990604   Richard Gooch <rgooch@atnf.csiro.au>
-               Added "diunlink" and "nokmod" boot options.
-               Removed superfluous warning message in <devfs_d_iput>.
-  v0.69
-    19990611   Richard Gooch <rgooch@atnf.csiro.au>
-               Took account of change to <d_alloc_root>.
-  v0.70
-    19990614   Richard Gooch <rgooch@atnf.csiro.au>
-               Created separate event queue for each mounted devfs.
-               Removed <devfs_invalidate_dcache>.
-               Created new ioctl()s.
-               Incremented devfsd protocol revision to 3.
-               Fixed bug when re-creating directories: contents were lost.
-               Block access to inodes until devfsd updates permissions.
-    19990615   Richard Gooch <rgooch@atnf.csiro.au>
-               Support 2.2.x kernels.
-  v0.71
-    19990623   Richard Gooch <rgooch@atnf.csiro.au>
-               Switched to sending process uid/gid to devfsd.
-               Renamed <call_kmod> to <try_modload>.
-               Added DEVFSD_NOTIFY_LOOKUP event.
-    19990624   Richard Gooch <rgooch@atnf.csiro.au>
-               Added DEVFSD_NOTIFY_CHANGE event.
-               Incremented devfsd protocol revision to 4.
-  v0.72
-    19990713   Richard Gooch <rgooch@atnf.csiro.au>
-               Return EISDIR rather than EINVAL for read(2) on directories.
-  v0.73
-    19990809   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed <devfs_setup> to new __init scheme.
-  v0.74
-    19990901   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed remaining function declarations to new __init scheme.
-  v0.75
-    19991013   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_get_info>, <devfs_set_info>,
-               <devfs_get_first_child> and <devfs_get_next_sibling>.
-               Added <<dir>> parameter to <devfs_register>, <devfs_mk_compat>,
-               <devfs_mk_dir> and <devfs_find_handle>.
-               Work sponsored by SGI.
-  v0.76
-    19991017   Richard Gooch <rgooch@atnf.csiro.au>
-               Allow multiple unregistrations.
-               Work sponsored by SGI.
-  v0.77
-    19991026   Richard Gooch <rgooch@atnf.csiro.au>
-               Added major and minor number to devfsd protocol.
-               Incremented devfsd protocol revision to 5.
-               Work sponsored by SGI.
-  v0.78
-    19991030   Richard Gooch <rgooch@atnf.csiro.au>
-               Support info pointer for all devfs entry types.
-               Added <<info>> parameter to <devfs_mk_dir> and
-               <devfs_mk_symlink>.
-               Work sponsored by SGI.
-  v0.79
-    19991031   Richard Gooch <rgooch@atnf.csiro.au>
-               Support "../" when searching devfs namespace.
-               Work sponsored by SGI.
-  v0.80
-    19991101   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_get_unregister_slave>.
-               Work sponsored by SGI.
-  v0.81
-    19991103   Richard Gooch <rgooch@atnf.csiro.au>
-               Exported <devfs_get_parent>.
-               Work sponsored by SGI.
-  v0.82
-    19991104   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed unused <devfs_set_symlink_destination>.
-    19991105   Richard Gooch <rgooch@atnf.csiro.au>
-               Do not hide entries from devfsd or children.
-               Removed DEVFS_ FL_TTY_COMPAT flag.
-               Removed "nottycompat" boot option.
-               Removed <devfs_mk_compat>.
-               Work sponsored by SGI.
-  v0.83
-    19991107   Richard Gooch <rgooch@atnf.csiro.au>
-               Added DEVFS_FL_WAIT flag.
-               Work sponsored by SGI.
-  v0.84
-    19991107   Richard Gooch <rgooch@atnf.csiro.au>
-               Support new "disc" naming scheme in <get_removable_partition>.
-               Allow NULL fops in <devfs_register>.
-               Work sponsored by SGI.
-  v0.85
-    19991110   Richard Gooch <rgooch@atnf.csiro.au>
-               Fall back to major table if NULL fops given to <devfs_register>.
-               Work sponsored by SGI.
-  v0.86
-    19991204   Richard Gooch <rgooch@atnf.csiro.au>
-               Support fifos when unregistering.
-               Work sponsored by SGI.
-  v0.87
-    19991209   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed obsolete DEVFS_ FL_COMPAT and DEVFS_ FL_TOLERANT flags.
-               Work sponsored by SGI.
-  v0.88
-    19991214   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed kmod support.
-               Work sponsored by SGI.
-  v0.89
-    19991216   Richard Gooch <rgooch@atnf.csiro.au>
-               Improved debugging in <get_vfs_inode>.
-               Ensure dentries created by devfsd will be cleaned up.
-               Work sponsored by SGI.
-  v0.90
-    19991223   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_get_name>.
-               Work sponsored by SGI.
-  v0.91
-    20000203   Richard Gooch <rgooch@atnf.csiro.au>
-               Ported to kernel 2.3.42.
-               Removed <devfs_fill_file>.
-               Work sponsored by SGI.
-  v0.92
-    20000306   Richard Gooch <rgooch@atnf.csiro.au>
-               Added DEVFS_ FL_NO_PERSISTENCE flag.
-               Removed unnecessary call to <update_devfs_inode_from_entry> in
-               <devfs_readdir>.
-               Work sponsored by SGI.
-  v0.93
-    20000413   Richard Gooch <rgooch@atnf.csiro.au>
-               Set inode->i_size to correct size for symlinks.
-    20000414   Richard Gooch <rgooch@atnf.csiro.au>
-               Only give lookup() method to directories to comply with new VFS
-               assumptions.
-               Work sponsored by SGI.
-    20000415   Richard Gooch <rgooch@atnf.csiro.au>
-               Remove unnecessary tests in symlink methods.
-               Don't kill existing block ops in <devfs_read_inode>.
-               Work sponsored by SGI.
-  v0.94
-    20000424   Richard Gooch <rgooch@atnf.csiro.au>
-               Don't create missing directories in <devfs_find_handle>.
-               Work sponsored by SGI.
-  v0.95
-    20000430   Richard Gooch <rgooch@atnf.csiro.au>
-               Added CONFIG_DEVFS_MOUNT.
-               Work sponsored by SGI.
-  v0.96
-    20000608   Richard Gooch <rgooch@atnf.csiro.au>
-               Disabled multi-mount capability (use VFS bindings instead).
-               Work sponsored by SGI.
-  v0.97
-    20000610   Richard Gooch <rgooch@atnf.csiro.au>
-               Switched to FS_SINGLE to disable multi-mounts.
-    20000612   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed module support.
-               Removed multi-mount code.
-               Removed compatibility macros: VFS has changed too much.
-               Work sponsored by SGI.
-  v0.98
-    20000614   Richard Gooch <rgooch@atnf.csiro.au>
-               Merged devfs inode into devfs entry.
-               Work sponsored by SGI.
-  v0.99
-    20000619   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed dead code in <devfs_register> which used to call
-               <free_dentries>.
-               Work sponsored by SGI.
-  v0.100
-    20000621   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed interface to <devfs_register>.
-               Work sponsored by SGI.
-  v0.101
-    20000622   Richard Gooch <rgooch@atnf.csiro.au>
-               Simplified interface to <devfs_mk_symlink> and <devfs_mk_dir>.
-               Simplified interface to <devfs_find_handle>.
-               Work sponsored by SGI.
-  v0.102
-    20010519   Richard Gooch <rgooch@atnf.csiro.au>
-               Ensure <devfs_generate_path> terminates string for root entry.
-               Exported <devfs_get_name> to modules.
-    20010520   Richard Gooch <rgooch@atnf.csiro.au>
-               Make <devfs_mk_symlink> send events to devfsd.
-               Cleaned up option processing in <devfs_setup>.
-    20010521   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bugs in handling symlinks: could leak or cause Oops.
-    20010522   Richard Gooch <rgooch@atnf.csiro.au>
-               Cleaned up directory handling by separating fops.
-  v0.103
-    20010601   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed handling of inverted options in <devfs_setup>.
-  v0.104
-    20010604   Richard Gooch <rgooch@atnf.csiro.au>
-               Adjusted <try_modload> to account for <devfs_generate_path> fix.
-  v0.105
-    20010617   Richard Gooch <rgooch@atnf.csiro.au>
-               Answered question posed by Al Viro and removed his comments.
-               Moved setting of registered flag after other fields are changed.
-               Fixed race between <devfsd_close> and <devfsd_notify_one>.
-               Global VFS changes added bogus BKL to <devfsd_close>: removed.
-               Widened locking in <devfs_readlink> and <devfs_follow_link>.
-               Replaced <devfsd_read> stack usage with <devfsd_ioctl> kmalloc.
-               Simplified locking in <devfsd_ioctl> and fixed memory leak.
-  v0.106
-    20010709   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed broken devnum allocation and use <devfs_alloc_devnum>.
-               Fixed old devnum leak by calling new <devfs_dealloc_devnum>.
-  v0.107
-    20010712   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bug in <devfs_setup> which could hang boot process.
-  v0.108
-    20010730   Richard Gooch <rgooch@atnf.csiro.au>
-               Added DEVFSD_NOTIFY_DELETE event.
-    20010801   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed #include <asm/segment.h>.
-  v0.109
-    20010807   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed inode table races by removing it and using
-               inode->u.generic_ip instead.
-               Moved <devfs_read_inode> into <get_vfs_inode>.
-               Moved <devfs_write_inode> into <devfs_notify_change>.
-  v0.110
-    20010808   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed race in <devfs_do_symlink> for uni-processor.
-  v0.111
-    20010818   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed remnant of multi-mount support in <devfs_mknod>.
-               Removed unused DEVFS_FL_SHOW_UNREG flag.
-  v0.112
-    20010820   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed nlink field from struct devfs_inode.
-  v0.113
-    20010823   Richard Gooch <rgooch@atnf.csiro.au>
-               Replaced BKL with global rwsem to protect symlink data (quick
-               and dirty hack).
-  v0.114
-    20010827   Richard Gooch <rgooch@atnf.csiro.au>
-               Replaced global rwsem for symlink with per-link refcount.
-  v0.115
-    20010919   Richard Gooch <rgooch@atnf.csiro.au>
-               Set inode->i_mapping->a_ops for block nodes in <get_vfs_inode>.
-  v0.116
-    20011008   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed overrun in <devfs_link> by removing function (not needed).
-    20011009   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed buffer underrun in <try_modload>.
-    20011029   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed race in <devfsd_ioctl> when setting event mask.
-    20011114   Richard Gooch <rgooch@atnf.csiro.au>
-               First release of new locking code.
-  v1.0
-    20011117   Richard Gooch <rgooch@atnf.csiro.au>
-               Discard temporary buffer, now use "%s" for dentry names.
-    20011118   Richard Gooch <rgooch@atnf.csiro.au>
-               Don't generate path in <try_modload>: use fake entry instead.
-               Use "existing" directory in <_devfs_make_parent_for_leaf>.
-    20011122   Richard Gooch <rgooch@atnf.csiro.au>
-               Use slab cache rather than fixed buffer for devfsd events.
-  v1.1
-    20011125   Richard Gooch <rgooch@atnf.csiro.au>
-               Send DEVFSD_NOTIFY_REGISTERED events in <devfs_mk_dir>.
-    20011127   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed locking bug in <devfs_d_revalidate_wait> due to typo.
-               Do not send CREATE, CHANGE, ASYNC_OPEN or DELETE events from
-               devfsd or children.
-  v1.2
-    20011202   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bug in <devfsd_read>: was dereferencing freed pointer.
-  v1.3
-    20011203   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bug in <devfsd_close>: was dereferencing freed pointer.
-               Added process group check for devfsd privileges.
-  v1.4
-    20011204   Richard Gooch <rgooch@atnf.csiro.au>
-               Use SLAB_ATOMIC in <devfsd_notify_de> from <devfs_d_delete>.
-  v1.5
-    20011211   Richard Gooch <rgooch@atnf.csiro.au>
-               Return old entry in <devfs_mk_dir> for 2.4.x kernels.
-    20011212   Richard Gooch <rgooch@atnf.csiro.au>
-               Increment refcount on module in <check_disc_changed>.
-    20011215   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_get_handle> and exported <devfs_put>.
-               Increment refcount on module in <devfs_get_ops>.
-               Created <devfs_put_ops>.
-  v1.6
-    20011216   Richard Gooch <rgooch@atnf.csiro.au>
-               Added poisoning to <devfs_put>.
-               Improved debugging messages.
-  v1.7
-    20011221   Richard Gooch <rgooch@atnf.csiro.au>
-               Corrected (made useful) debugging message in <unregister>.
-               Moved <kmem_cache_create> in <mount_devfs_fs> to <init_devfs_fs>
-    20011224   Richard Gooch <rgooch@atnf.csiro.au>
-               Added magic number to guard against scribbling drivers.
-    20011226   Richard Gooch <rgooch@atnf.csiro.au>
-               Only return old entry in <devfs_mk_dir> if a directory.
-               Defined macros for error and debug messages.
-  v1.8
-    20020113   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed (rare, old) race in <devfs_lookup>.
-  v1.9
-    20020120   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed deadlock bug in <devfs_d_revalidate_wait>.
-               Tag VFS deletable in <devfs_mk_symlink> if handle ignored.
-  v1.10
-    20020129   Richard Gooch <rgooch@atnf.csiro.au>
-               Added KERN_* to remaining messages.
-               Cleaned up declaration of <stat_read>.
-  v1.11
-    20020219   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed <devfs_rmdir> to allow later additions if not yet empty.
-  v1.12
-    20020406   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed silently introduced calls to lock_kernel() and
-               unlock_kernel() due to recent VFS locking changes. BKL isn't
-               required in devfs.
-  v1.13
-    20020428   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed 2.4.x compatibility code.
-  v1.14
-    20020510   Richard Gooch <rgooch@atnf.csiro.au>
-               Added BKL to <devfs_open> because drivers still need it.
-  v1.15
-    20020512   Richard Gooch <rgooch@atnf.csiro.au>
-               Protected <scan_dir_for_removable> and <get_removable_partition>
-               from changing directory contents.
-  v1.16
-    20020514   Richard Gooch <rgooch@atnf.csiro.au>
-               Minor cleanup of <scan_dir_for_removable>.
-  v1.17
-    20020721   Richard Gooch <rgooch@atnf.csiro.au>
-               Switched to ISO C structure field initialisers.
-               Switch to set_current_state() and move before add_wait_queue().
-    20020722   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed devfs entry leak in <devfs_readdir> when *readdir fails.
-  v1.18
-    20020725   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_find_and_unregister>.
-  v1.19
-    20020728   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed deprecated <devfs_find_handle>.
-  v1.20
-    20020820   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed module unload race in <devfs_open>.
-  v1.21
-    20021013   Richard Gooch <rgooch@atnf.csiro.au>
-               Removed DEVFS_ FL_AUTO_OWNER.
-               Switched lingering structure field initialiser to ISO C.
-               Added locking when updating FCB flags.
-  v1.22
-*/
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/time.h>
-#include <linux/tty.h>
-#include <linux/timer.h>
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/wait.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/ctype.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/devfs_fs.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/smp_lock.h>
-#include <linux/smp.h>
-#include <linux/rwsem.h>
-#include <linux/sched.h>
-#include <linux/namei.h>
-#include <linux/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/atomic.h>
-#define DEVFS_VERSION            "2004-01-31"
-#define DEVFS_NAME "devfs"
-#define FIRST_INODE 1
-#define STRING_LENGTH 256
-#define FAKE_BLOCK_SIZE 1024
-#define POISON_PTR ( *(void **) poison_array )
-#define MAGIC_VALUE 0x327db823
-#ifndef TRUE
-#  define TRUE 1
-#  define FALSE 0
-#endif
-#define MODE_DIR (S_IFDIR | S_IWUSR | S_IRUGO | S_IXUGO)
-#define DEBUG_NONE         0x0000000
-#define DEBUG_MODULE_LOAD  0x0000001
-#define DEBUG_REGISTER     0x0000002
-#define DEBUG_UNREGISTER   0x0000004
-#define DEBUG_FREE         0x0000008
-#define DEBUG_SET_FLAGS    0x0000010
-#define DEBUG_S_READ       0x0000100    /*  Break  */
-#define DEBUG_I_LOOKUP     0x0001000    /*  Break  */
-#define DEBUG_I_CREATE     0x0002000
-#define DEBUG_I_GET        0x0004000
-#define DEBUG_I_CHANGE     0x0008000
-#define DEBUG_I_UNLINK     0x0010000
-#define DEBUG_I_RLINK      0x0020000
-#define DEBUG_I_FLINK      0x0040000
-#define DEBUG_I_MKNOD      0x0080000
-#define DEBUG_F_READDIR    0x0100000    /*  Break  */
-#define DEBUG_D_DELETE     0x1000000    /*  Break  */
-#define DEBUG_D_RELEASE    0x2000000
-#define DEBUG_D_IPUT       0x4000000
-#define DEBUG_ALL          0xfffffff
-#define DEBUG_DISABLED     DEBUG_NONE
-#define OPTION_NONE             0x00
-#define OPTION_MOUNT            0x01
-#define PRINTK(format, args...) \
-   {printk (KERN_ERR "%s" format, __FUNCTION__ , ## args);}
-#define OOPS(format, args...) \
-   {printk (KERN_CRIT "%s" format, __FUNCTION__ , ## args); \
-    printk ("Forcing Oops\n"); \
-    BUG();}
-#ifdef CONFIG_DEVFS_DEBUG
-#  define VERIFY_ENTRY(de) \
-   {if ((de) && (de)->magic_number != MAGIC_VALUE) \
-        OOPS ("(%p): bad magic value: %x\n", (de), (de)->magic_number);}
-#  define WRITE_ENTRY_MAGIC(de,magic) (de)->magic_number = (magic)
-#  define DPRINTK(flag, format, args...) \
-   {if (devfs_debug & flag) \
-        printk (KERN_INFO "%s" format, __FUNCTION__ , ## args);}
-#else
-#  define VERIFY_ENTRY(de)
-#  define WRITE_ENTRY_MAGIC(de,magic)
-#  define DPRINTK(flag, format, args...)
-#endif
-typedef struct devfs_entry *devfs_handle_t;
-struct directory_type {
-        rwlock_t lock;          /*  Lock for searching(R)/updating(W)   */
-        struct devfs_entry *first;
-        struct devfs_entry *last;
-        unsigned char no_more_additions:1;
-};
-struct symlink_type {
-        unsigned int length;    /*  Not including the NULL-termimator       */
-        char *linkname;         /*  This is NULL-terminated                 */
-};
-struct devfs_inode {            /*  This structure is for "persistent" inode storage  */
-        struct dentry *dentry;
-        struct timespec atime;
-        struct timespec mtime;
-        struct timespec ctime;
-        unsigned int ino;       /*  Inode number as seen in the VFS         */
-        uid_t uid;
-        gid_t gid;
-};
-struct devfs_entry {
-#ifdef CONFIG_DEVFS_DEBUG
-        unsigned int magic_number;
-#endif
-        void *info;
-        atomic_t refcount;      /*  When this drops to zero, it's unused    */
-        union {
-                struct directory_type dir;
-                dev_t dev;
-                struct symlink_type symlink;
-                const char *name;       /*  Only used for (mode == 0)               */
-        } u;
-        struct devfs_entry *prev;       /*  Previous entry in the parent directory  */
-        struct devfs_entry *next;       /*  Next entry in the parent directory      */
-        struct devfs_entry *parent;     /*  The parent directory                    */
-        struct devfs_inode inode;
-        umode_t mode;
-        unsigned short namelen; /*  I think 64k+ filenames are a way off... */
-        unsigned char vfs:1;    /*  Whether the VFS may delete the entry   */
-        char name[1];           /*  This is just a dummy: the allocated array
-                                   is bigger. This is NULL-terminated      */
-};
-/*  The root of the device tree  */
-static struct devfs_entry *root_entry;
-struct devfsd_buf_entry {
-        struct devfs_entry *de; /*  The name is generated with this         */
-        unsigned short type;    /*  The type of event                       */
-        umode_t mode;
-        uid_t uid;
-        gid_t gid;
-        struct devfsd_buf_entry *next;
-};
-struct fs_info {                /*  This structure is for the mounted devfs  */
-        struct super_block *sb;
-        spinlock_t devfsd_buffer_lock;  /*  Lock when inserting/deleting events  */
-        struct devfsd_buf_entry *devfsd_first_event;
-        struct devfsd_buf_entry *devfsd_last_event;
-        volatile int devfsd_sleeping;
-        volatile struct task_struct *devfsd_task;
-        volatile pid_t devfsd_pgrp;
-        volatile struct file *devfsd_file;
-        struct devfsd_notify_struct *devfsd_info;
-        volatile unsigned long devfsd_event_mask;
-        atomic_t devfsd_overrun_count;
-        wait_queue_head_t devfsd_wait_queue;    /*  Wake devfsd on input       */
-        wait_queue_head_t revalidate_wait_queue;        /*  Wake when devfsd sleeps    */
-};
-static struct fs_info fs_info = {.devfsd_buffer_lock = SPIN_LOCK_UNLOCKED };
-static kmem_cache_t *devfsd_buf_cache;
-#ifdef CONFIG_DEVFS_DEBUG
-static unsigned int devfs_debug_init __initdata = DEBUG_NONE;
-static unsigned int devfs_debug = DEBUG_NONE;
-static DEFINE_SPINLOCK(stat_lock);
-static unsigned int stat_num_entries;
-static unsigned int stat_num_bytes;
-#endif
-static unsigned char poison_array[8] =
-    { 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a };
-#ifdef CONFIG_DEVFS_MOUNT
-static unsigned int boot_options = OPTION_MOUNT;
-#else
-static unsigned int boot_options = OPTION_NONE;
-#endif
-/*  Forward function declarations  */
-static devfs_handle_t _devfs_walk_path(struct devfs_entry *dir,
-                                       const char *name, int namelen,
-                                       int traverse_symlink);
-static ssize_t devfsd_read(struct file *file, char __user *buf, size_t len,
-                           loff_t * ppos);
-static int devfsd_ioctl(struct inode *inode, struct file *file,
-                        unsigned int cmd, unsigned long arg);
-static int devfsd_close(struct inode *inode, struct file *file);
-#ifdef CONFIG_DEVFS_DEBUG
-static ssize_t stat_read(struct file *file, char __user *buf, size_t len,
-                         loff_t * ppos);
-static const struct file_operations stat_fops = {
-        .open = nonseekable_open,
-        .read = stat_read,
-};
-#endif
-/*  Devfs daemon file operations  */
-static const struct file_operations devfsd_fops = {
-        .open = nonseekable_open,
-        .read = devfsd_read,
-        .ioctl = devfsd_ioctl,
-        .release = devfsd_close,
-};
-/*  Support functions follow  */
-/**
- *      devfs_get - Get a reference to a devfs entry.
- *      @de:  The devfs entry.
- */
-static struct devfs_entry *devfs_get(struct devfs_entry *de)
-{
-        VERIFY_ENTRY(de);
-        if (de)
-                atomic_inc(&de->refcount);
-        return de;
-}                               /*  End Function devfs_get  */
-/**
- *      devfs_put - Put (release) a reference to a devfs entry.
- *      @de:  The handle to the devfs entry.
- */
-static void devfs_put(devfs_handle_t de)
-{
-        if (!de)
-                return;
-        VERIFY_ENTRY(de);
-        if (de->info == POISON_PTR)
-                OOPS("(%p): poisoned pointer\n", de);
-        if (!atomic_dec_and_test(&de->refcount))
-                return;
-        if (de == root_entry)
-                OOPS("(%p): root entry being freed\n", de);
-        DPRINTK(DEBUG_FREE, "(%s): de: %p, parent: %p \"%s\"\n",
-                de->name, de, de->parent,
-                de->parent ? de->parent->name : "no parent");
-        if (S_ISLNK(de->mode))
-                kfree(de->u.symlink.linkname);
-        WRITE_ENTRY_MAGIC(de, 0);
-#ifdef CONFIG_DEVFS_DEBUG
-        spin_lock(&stat_lock);
-        --stat_num_entries;
-        stat_num_bytes -= sizeof *de + de->namelen;
-        if (S_ISLNK(de->mode))
-                stat_num_bytes -= de->u.symlink.length + 1;
-        spin_unlock(&stat_lock);
-#endif
-        de->info = POISON_PTR;
-        kfree(de);
-}                               /*  End Function devfs_put  */
-/**
- *      _devfs_search_dir - Search for a devfs entry in a directory.
- *      @dir:  The directory to search.
- *      @name:  The name of the entry to search for.
- *      @namelen:  The number of characters in @name.
- *
- *  Search for a devfs entry in a directory and returns a pointer to the entry
- *   on success, else %NULL. The directory must be locked already.
- *   An implicit devfs_get() is performed on the returned entry.
- */
-static struct devfs_entry *_devfs_search_dir(struct devfs_entry *dir,
-                                             const char *name,
-                                             unsigned int namelen)
-{
-        struct devfs_entry *curr;
-        if (!S_ISDIR(dir->mode)) {
-                PRINTK("(%s): not a directory\n", dir->name);
-                return NULL;
-        }
-        for (curr = dir->u.dir.first; curr != NULL; curr = curr->next) {
-                if (curr->namelen != namelen)
-                        continue;
-                if (memcmp(curr->name, name, namelen) == 0)
-                        break;
-                /*  Not found: try the next one  */
-        }
-        return devfs_get(curr);
-}                               /*  End Function _devfs_search_dir  */
-/**
- *      _devfs_alloc_entry - Allocate a devfs entry.
- *      @name:     the name of the entry
- *      @namelen:  the number of characters in @name
- *      @mode:     the mode for the entry
- *
- *  Allocate a devfs entry and returns a pointer to the entry on success, else
- *   %NULL.
- */
-static struct devfs_entry *_devfs_alloc_entry(const char *name,
-                                              unsigned int namelen,
-                                              umode_t mode)
-{
-        struct devfs_entry *new;
-        static unsigned long inode_counter = FIRST_INODE;
-        static DEFINE_SPINLOCK(counter_lock);
-        if (name && (namelen < 1))
-                namelen = strlen(name);
-        if ((new = kmalloc(sizeof *new + namelen, GFP_KERNEL)) == NULL)
-                return NULL;
-        memset(new, 0, sizeof *new + namelen);  /*  Will set '\0' on name  */
-        new->mode = mode;
-        if (S_ISDIR(mode))
-                rwlock_init(&new->u.dir.lock);
-        atomic_set(&new->refcount, 1);
-        spin_lock(&counter_lock);
-        new->inode.ino = inode_counter++;
-        spin_unlock(&counter_lock);
-        if (name)
-                memcpy(new->name, name, namelen);
-        new->namelen = namelen;
-        WRITE_ENTRY_MAGIC(new, MAGIC_VALUE);
-#ifdef CONFIG_DEVFS_DEBUG
-        spin_lock(&stat_lock);
-        ++stat_num_entries;
-        stat_num_bytes += sizeof *new + namelen;
-        spin_unlock(&stat_lock);
-#endif
-        return new;
-}                               /*  End Function _devfs_alloc_entry  */
-/**
- *      _devfs_append_entry - Append a devfs entry to a directory's child list.
- *      @dir:  The directory to add to.
- *      @de:  The devfs entry to append.
- *      @old_de: If an existing entry exists, it will be written here. This may
- *               be %NULL. An implicit devfs_get() is performed on this entry.
- *
- *  Append a devfs entry to a directory's list of children, checking first to
- *   see if an entry of the same name exists. The directory will be locked.
- *   The value 0 is returned on success, else a negative error code.
- *   On failure, an implicit devfs_put() is performed on %de.
- */
-static int _devfs_append_entry(devfs_handle_t dir, devfs_handle_t de,
-                               devfs_handle_t * old_de)
-{
-        int retval;
-        if (old_de)
-                *old_de = NULL;
-        if (!S_ISDIR(dir->mode)) {
-                PRINTK("(%s): dir: \"%s\" is not a directory\n", de->name,
-                       dir->name);
-                devfs_put(de);
-                return -ENOTDIR;
-        }
-        write_lock(&dir->u.dir.lock);
-        if (dir->u.dir.no_more_additions)
-                retval = -ENOENT;
-        else {
-                struct devfs_entry *old;
-                old = _devfs_search_dir(dir, de->name, de->namelen);
-                if (old_de)
-                        *old_de = old;
-                else
-                        devfs_put(old);
-                if (old == NULL) {
-                        de->parent = dir;
-                        de->prev = dir->u.dir.last;
-                        /*  Append to the directory's list of children  */
-                        if (dir->u.dir.first == NULL)
-                                dir->u.dir.first = de;
-                        else
-                                dir->u.dir.last->next = de;
-                        dir->u.dir.last = de;
-                        retval = 0;
-                } else
-                        retval = -EEXIST;
-        }
-        write_unlock(&dir->u.dir.lock);
-        if (retval)
-                devfs_put(de);
-        return retval;
-}                               /*  End Function _devfs_append_entry  */
-/**
- *      _devfs_get_root_entry - Get the root devfs entry.
- *
- *      Returns the root devfs entry on success, else %NULL.
- *
- *      TODO it must be called asynchronously due to the fact
- *      that devfs is initialized relatively late. Proper way
- *      is to remove module_init from init_devfs_fs and manually
- *      call it early enough during system init
- */
-static struct devfs_entry *_devfs_get_root_entry(void)
-{
-        struct devfs_entry *new;
-        static DEFINE_SPINLOCK(root_lock);
-        if (root_entry)
-                return root_entry;
-        new = _devfs_alloc_entry(NULL, 0, MODE_DIR);
-        if (new == NULL)
-                return NULL;
-        spin_lock(&root_lock);
-        if (root_entry) {
-                spin_unlock(&root_lock);
-                devfs_put(new);
-                return root_entry;
-        }
-        root_entry = new;
-        spin_unlock(&root_lock);
-        return root_entry;
-}                               /*  End Function _devfs_get_root_entry  */
-/**
- *      _devfs_descend - Descend down a tree using the next component name.
- *      @dir:  The directory to search.
- *      @name:  The component name to search for.
- *      @namelen:  The length of %name.
- *      @next_pos:  The position of the next '/' or '\0' is written here.
- *
- *  Descend into a directory, searching for a component. This function forms
- *   the core of a tree-walking algorithm. The directory will be locked.
- *   The devfs entry corresponding to the component is returned. If there is
- *   no matching entry, %NULL is returned.
- *   An implicit devfs_get() is performed on the returned entry.
- */
-static struct devfs_entry *_devfs_descend(struct devfs_entry *dir,
-                                          const char *name, int namelen,
-                                          int *next_pos)
-{
-        const char *stop, *ptr;
-        struct devfs_entry *entry;
-        if ((namelen >= 3) && (strncmp(name, "../", 3) == 0)) { /*  Special-case going to parent directory  */
-                *next_pos = 3;
-                return devfs_get(dir->parent);
-        }
-        stop = name + namelen;
-        /*  Search for a possible '/'  */
-        for (ptr = name; (ptr < stop) && (*ptr != '/'); ++ptr) ;
-        *next_pos = ptr - name;
-        read_lock(&dir->u.dir.lock);
-        entry = _devfs_search_dir(dir, name, *next_pos);
-        read_unlock(&dir->u.dir.lock);
-        return entry;
-}                               /*  End Function _devfs_descend  */
-static devfs_handle_t _devfs_make_parent_for_leaf(struct devfs_entry *dir,
-                                                  const char *name,
-                                                  int namelen, int *leaf_pos)
-{
-        int next_pos = 0;
-        if (dir == NULL)
-                dir = _devfs_get_root_entry();
-        if (dir == NULL)
-                return NULL;
-        devfs_get(dir);
-        /*  Search for possible trailing component and ignore it  */
-        for (--namelen; (namelen > 0) && (name[namelen] != '/'); --namelen) ;
-        *leaf_pos = (name[namelen] == '/') ? (namelen + 1) : 0;
-        for (; namelen > 0; name += next_pos, namelen -= next_pos) {
-                struct devfs_entry *de, *old = NULL;
-                if ((de =
-                     _devfs_descend(dir, name, namelen, &next_pos)) == NULL) {
-                        de = _devfs_alloc_entry(name, next_pos, MODE_DIR);
-                        devfs_get(de);
-                        if (!de || _devfs_append_entry(dir, de, &old)) {
-                                devfs_put(de);
-                                if (!old || !S_ISDIR(old->mode)) {
-                                        devfs_put(old);
-                                        devfs_put(dir);
-                                        return NULL;
-                                }
-                                de = old;       /*  Use the existing directory  */
-                        }
-                }
-                if (de == dir->parent) {
-                        devfs_put(dir);
-                        devfs_put(de);
-                        return NULL;
-                }
-                devfs_put(dir);
-                dir = de;
-                if (name[next_pos] == '/')
-                        ++next_pos;
-        }
-        return dir;
-}                               /*  End Function _devfs_make_parent_for_leaf  */
-static devfs_handle_t _devfs_prepare_leaf(devfs_handle_t * dir,
-                                          const char *name, umode_t mode)
-{
-        int namelen, leaf_pos;
-        struct devfs_entry *de;
-        namelen = strlen(name);
-        if ((*dir = _devfs_make_parent_for_leaf(*dir, name, namelen,
-                                                &leaf_pos)) == NULL) {
-                PRINTK("(%s): could not create parent path\n", name);
-                return NULL;
-        }
-        if ((de = _devfs_alloc_entry(name + leaf_pos, namelen - leaf_pos, mode))
-            == NULL) {
-                PRINTK("(%s): could not allocate entry\n", name);
-                devfs_put(*dir);
-                return NULL;
-        }
-        return de;
-}                               /*  End Function _devfs_prepare_leaf  */
-static devfs_handle_t _devfs_walk_path(struct devfs_entry *dir,
-                                       const char *name, int namelen,
-                                       int traverse_symlink)
-{
-        int next_pos = 0;
-        if (dir == NULL)
-                dir = _devfs_get_root_entry();
-        if (dir == NULL)
-                return NULL;
-        devfs_get(dir);
-        for (; namelen > 0; name += next_pos, namelen -= next_pos) {
-                struct devfs_entry *de, *link;
-                if (!S_ISDIR(dir->mode)) {
-                        devfs_put(dir);
-                        return NULL;
-                }
-                if ((de =
-                     _devfs_descend(dir, name, namelen, &next_pos)) == NULL) {
-                        devfs_put(dir);
-                        return NULL;
-                }
-                if (S_ISLNK(de->mode) && traverse_symlink) {    /*  Need to follow the link: this is a stack chomper  */
-                        /* FIXME what if it puts outside of mounted tree? */
-                        link = _devfs_walk_path(dir, de->u.symlink.linkname,
-                                                de->u.symlink.length, TRUE);
-                        devfs_put(de);
-                        if (!link) {
-                                devfs_put(dir);
-                                return NULL;
-                        }
-                        de = link;
-                }
-                devfs_put(dir);
-                dir = de;
-                if (name[next_pos] == '/')
-                        ++next_pos;
-        }
-        return dir;
-}                               /*  End Function _devfs_walk_path  */
-/**
- *      _devfs_find_entry - Find a devfs entry.
- *      @dir: The handle to the parent devfs directory entry. If this is %NULL the
- *              name is relative to the root of the devfs.
- *      @name: The name of the entry. This may be %NULL.
- *      @traverse_symlink: If %TRUE then symbolic links are traversed.
- *
- *      Returns the devfs_entry pointer on success, else %NULL. An implicit
- *      devfs_get() is performed.
- */
-static struct devfs_entry *_devfs_find_entry(devfs_handle_t dir,
-                                             const char *name,
-                                             int traverse_symlink)
-{
-        unsigned int namelen = strlen(name);
-        if (name[0] == '/') {
-                /*  Skip leading pathname component  */
-                if (namelen < 2) {
-                        PRINTK("(%s): too short\n", name);
-                        return NULL;
-                }
-                for (++name, --namelen; (*name != '/') && (namelen > 0);
-                     ++name, --namelen) ;
-                if (namelen < 2) {
-                        PRINTK("(%s): too short\n", name);
-                        return NULL;
-                }
-                ++name;
-                --namelen;
-        }
-        return _devfs_walk_path(dir, name, namelen, traverse_symlink);
-}                               /*  End Function _devfs_find_entry  */
-static struct devfs_entry *get_devfs_entry_from_vfs_inode(struct inode *inode)
-{
-        if (inode == NULL)
-                return NULL;
-        VERIFY_ENTRY((struct devfs_entry *)inode->u.generic_ip);
-        return inode->u.generic_ip;
-}                               /*  End Function get_devfs_entry_from_vfs_inode  */
-/**
- *      free_dentry - Free the dentry for a device entry and invalidate inode.
- *      @de: The entry.
- *
- *      This must only be called after the entry has been unhooked from its
- *       parent directory.
- */
-static void free_dentry(struct devfs_entry *de)
-{
-        struct dentry *dentry = de->inode.dentry;
-        if (!dentry)
-                return;
-        spin_lock(&dcache_lock);
-        dget_locked(dentry);
-        spin_unlock(&dcache_lock);
-        /*  Forcefully remove the inode  */
-        if (dentry->d_inode != NULL)
-                dentry->d_inode->i_nlink = 0;
-        d_drop(dentry);
-        dput(dentry);
-}                               /*  End Function free_dentry  */
-/**
- *      is_devfsd_or_child - Test if the current process is devfsd or one of its children.
- *      @fs_info: The filesystem information.
- *
- *      Returns %TRUE if devfsd or child, else %FALSE.
- */
-static int is_devfsd_or_child(struct fs_info *fs_info)
-{
-        struct task_struct *p = current;
-        if (p == fs_info->devfsd_task)
-                return (TRUE);
-        if (process_group(p) == fs_info->devfsd_pgrp)
-                return (TRUE);
-        read_lock(&tasklist_lock);
-        for (; p != &init_task; p = p->real_parent) {
-                if (p == fs_info->devfsd_task) {
-                        read_unlock(&tasklist_lock);
-                        return (TRUE);
-                }
-        }
-        read_unlock(&tasklist_lock);
-        return (FALSE);
-}                               /*  End Function is_devfsd_or_child  */
-/**
- *      devfsd_queue_empty - Test if devfsd has work pending in its event queue.
- *      @fs_info: The filesystem information.
- *
- *      Returns %TRUE if the queue is empty, else %FALSE.
- */
-static inline int devfsd_queue_empty(struct fs_info *fs_info)
-{
-        return (fs_info->devfsd_last_event) ? FALSE : TRUE;
-}                               /*  End Function devfsd_queue_empty  */
-/**
- *      wait_for_devfsd_finished - Wait for devfsd to finish processing its event queue.
- *      @fs_info: The filesystem information.
- *
- *      Returns %TRUE if no more waiting will be required, else %FALSE.
- */
-static int wait_for_devfsd_finished(struct fs_info *fs_info)
-{
-        DECLARE_WAITQUEUE(wait, current);
-        if (fs_info->devfsd_task == NULL)
-                return (TRUE);
-        if (devfsd_queue_empty(fs_info) && fs_info->devfsd_sleeping)
-                return TRUE;
-        if (is_devfsd_or_child(fs_info))
-                return (FALSE);
-        set_current_state(TASK_UNINTERRUPTIBLE);
-        add_wait_queue(&fs_info->revalidate_wait_queue, &wait);
-        if (!devfsd_queue_empty(fs_info) || !fs_info->devfsd_sleeping)
-                if (fs_info->devfsd_task)
-                        schedule();
-        remove_wait_queue(&fs_info->revalidate_wait_queue, &wait);
-        __set_current_state(TASK_RUNNING);
-        return (TRUE);
-}                               /*  End Function wait_for_devfsd_finished  */
-/**
- *      devfsd_notify_de - Notify the devfsd daemon of a change.
- *      @de: The devfs entry that has changed. This and all parent entries will
- *            have their reference counts incremented if the event was queued.
- *      @type: The type of change.
- *      @mode: The mode of the entry.
- *      @uid: The user ID.
- *      @gid: The group ID.
- *      @fs_info: The filesystem info.
- *
- *      Returns %TRUE if an event was queued and devfsd woken up, else %FALSE.
- */
-static int devfsd_notify_de(struct devfs_entry *de,
-                            unsigned short type, umode_t mode,
-                            uid_t uid, gid_t gid, struct fs_info *fs_info)
-{
-        struct devfsd_buf_entry *entry;
-        struct devfs_entry *curr;
-        if (!(fs_info->devfsd_event_mask & (1 << type)))
-                return (FALSE);
-        if ((entry = kmem_cache_alloc(devfsd_buf_cache, SLAB_KERNEL)) == NULL) {
-                atomic_inc(&fs_info->devfsd_overrun_count);
-                return (FALSE);
-        }
-        for (curr = de; curr != NULL; curr = curr->parent)
-                devfs_get(curr);
-        entry->de = de;
-        entry->type = type;
-        entry->mode = mode;
-        entry->uid = uid;
-        entry->gid = gid;
-        entry->next = NULL;
-        spin_lock(&fs_info->devfsd_buffer_lock);
-        if (!fs_info->devfsd_first_event)
-                fs_info->devfsd_first_event = entry;
-        if (fs_info->devfsd_last_event)
-                fs_info->devfsd_last_event->next = entry;
-        fs_info->devfsd_last_event = entry;
-        spin_unlock(&fs_info->devfsd_buffer_lock);
-        wake_up_interruptible(&fs_info->devfsd_wait_queue);
-        return (TRUE);
-}                               /*  End Function devfsd_notify_de  */
-/**
- *      devfsd_notify - Notify the devfsd daemon of a change.
- *      @de: The devfs entry that has changed.
- *      @type: The type of change event.
- *      @wait: If TRUE, the function waits for the daemon to finish processing
- *              the event.
- */
-static void devfsd_notify(struct devfs_entry *de, unsigned short type)
-{
-        devfsd_notify_de(de, type, de->mode, current->euid,
-                         current->egid, &fs_info);
-}
-static int devfs_mk_dev(dev_t dev, umode_t mode, const char *fmt, va_list args)
-{
-        struct devfs_entry *dir = NULL, *de;
-        char buf[64];
-        int error, n;
-        n = vsnprintf(buf, sizeof(buf), fmt, args);
-        if (n >= sizeof(buf) || !buf[0]) {
-                printk(KERN_WARNING "%s: invalid format string %s\n",
-                       __FUNCTION__, fmt);
-                return -EINVAL;
-        }
-        de = _devfs_prepare_leaf(&dir, buf, mode);
-        if (!de) {
-                printk(KERN_WARNING "%s: could not prepare leaf for %s\n",
-                       __FUNCTION__, buf);
-                return -ENOMEM; /* could be more accurate... */
-        }
-        de->u.dev = dev;
-        error = _devfs_append_entry(dir, de, NULL);
-        if (error) {
-                printk(KERN_WARNING "%s: could not append to parent for %s\n",
-                       __FUNCTION__, buf);
-                goto out;
-        }
-        devfsd_notify(de, DEVFSD_NOTIFY_REGISTERED);
-      out:
-        devfs_put(dir);
-        return error;
-}
-int devfs_mk_bdev(dev_t dev, umode_t mode, const char *fmt, ...)
-{
-        va_list args;
-        if (!S_ISBLK(mode)) {
-                printk(KERN_WARNING "%s: invalide mode (%u) for %s\n",
-                       __FUNCTION__, mode, fmt);
-                return -EINVAL;
-        }
-        va_start(args, fmt);
-        return devfs_mk_dev(dev, mode, fmt, args);
-}
-EXPORT_SYMBOL(devfs_mk_bdev);
-int devfs_mk_cdev(dev_t dev, umode_t mode, const char *fmt, ...)
-{
-        va_list args;
-        if (!S_ISCHR(mode)) {
-                printk(KERN_WARNING "%s: invalide mode (%u) for %s\n",
-                       __FUNCTION__, mode, fmt);
-                return -EINVAL;
-        }
-        va_start(args, fmt);
-        return devfs_mk_dev(dev, mode, fmt, args);
-}
-EXPORT_SYMBOL(devfs_mk_cdev);
-/**
- *      _devfs_unhook - Unhook a device entry from its parents list
- *      @de: The entry to unhook.
- *
- *      Returns %TRUE if the entry was unhooked, else %FALSE if it was
- *              previously unhooked.
- *      The caller must have a write lock on the parent directory.
- */
-static int _devfs_unhook(struct devfs_entry *de)
-{
-        struct devfs_entry *parent;
-        if (!de || (de->prev == de))
-                return FALSE;
-        parent = de->parent;
-        if (de->prev == NULL)
-                parent->u.dir.first = de->next;
-        else
-                de->prev->next = de->next;
-        if (de->next == NULL)
-                parent->u.dir.last = de->prev;
-        else
-                de->next->prev = de->prev;
-        de->prev = de;          /*  Indicate we're unhooked                      */
-        de->next = NULL;        /*  Force early termination for <devfs_readdir>  */
-        return TRUE;
-}                               /*  End Function _devfs_unhook  */
-/**
- *      _devfs_unregister - Unregister a device entry from its parent.
- *      @dir: The parent directory.
- *      @de: The entry to unregister.
- *
- *      The caller must have a write lock on the parent directory, which is
- *      unlocked by this function.
- */
-static void _devfs_unregister(struct devfs_entry *dir, struct devfs_entry *de)
-{
-        int unhooked = _devfs_unhook(de);
-        write_unlock(&dir->u.dir.lock);
-        if (!unhooked)
-                return;
-        devfs_get(dir);
-        devfsd_notify(de, DEVFSD_NOTIFY_UNREGISTERED);
-        free_dentry(de);
-        devfs_put(dir);
-        if (!S_ISDIR(de->mode))
-                return;
-        while (TRUE) {          /*  Recursively unregister: this is a stack chomper  */
-                struct devfs_entry *child;
-                write_lock(&de->u.dir.lock);
-                de->u.dir.no_more_additions = TRUE;
-                child = de->u.dir.first;
-                VERIFY_ENTRY(child);
-                _devfs_unregister(de, child);
-                if (!child)
-                        break;
-                DPRINTK(DEBUG_UNREGISTER, "(%s): child: %p  refcount: %d\n",
-                        child->name, child, atomic_read(&child->refcount));
-                devfs_put(child);
-        }
-}                               /*  End Function _devfs_unregister  */
-static int devfs_do_symlink(devfs_handle_t dir, const char *name,
-                            const char *link, devfs_handle_t * handle)
-{
-        int err;
-        unsigned int linklength;
-        char *newlink;
-        struct devfs_entry *de;
-        if (handle != NULL)
-                *handle = NULL;
-        if (name == NULL) {
-                PRINTK("(): NULL name pointer\n");
-                return -EINVAL;
-        }
-        if (link == NULL) {
-                PRINTK("(%s): NULL link pointer\n", name);
-                return -EINVAL;
-        }
-        linklength = strlen(link);
-        if ((newlink = kmalloc(linklength + 1, GFP_KERNEL)) == NULL)
-                return -ENOMEM;
-        memcpy(newlink, link, linklength);
-        newlink[linklength] = '\0';
-        if ((de = _devfs_prepare_leaf(&dir, name, S_IFLNK | S_IRUGO | S_IXUGO))
-            == NULL) {
-                PRINTK("(%s): could not prepare leaf\n", name);
-                kfree(newlink);
-                return -ENOTDIR;
-        }
-        de->info = NULL;
-        de->u.symlink.linkname = newlink;
-        de->u.symlink.length = linklength;
-        if ((err = _devfs_append_entry(dir, de, NULL)) != 0) {
-                PRINTK("(%s): could not append to parent, err: %d\n", name,
-                       err);
-                devfs_put(dir);
-                return err;
-        }
-        devfs_put(dir);
-#ifdef CONFIG_DEVFS_DEBUG
-        spin_lock(&stat_lock);
-        stat_num_bytes += linklength + 1;
-        spin_unlock(&stat_lock);
-#endif
-        if (handle != NULL)
-                *handle = de;
-        return 0;
-}                               /*  End Function devfs_do_symlink  */
-/**
- *      devfs_mk_symlink Create a symbolic link in the devfs namespace.
- *      @from: The name of the entry.
- *      @to: Name of the destination
- *
- *      Returns 0 on success, else a negative error code is returned.
- */
-int devfs_mk_symlink(const char *from, const char *to)
-{
-        devfs_handle_t de;
-        int err;
-        err = devfs_do_symlink(NULL, from, to, &de);
-        if (!err) {
-                de->vfs = TRUE;
-                devfsd_notify(de, DEVFSD_NOTIFY_REGISTERED);
-        }
-        return err;
-}
-/**
- *      devfs_mk_dir - Create a directory in the devfs namespace.
- *              new name is relative to the root of the devfs.
- *      @fmt: The name of the entry.
- *
- *      Use of this function is optional. The devfs_register() function
- *      will automatically create intermediate directories as needed. This function
- *      is provided for efficiency reasons, as it provides a handle to a directory.
- *      On failure %NULL is returned.
- */
-int devfs_mk_dir(const char *fmt, ...)
-{
-        struct devfs_entry *dir = NULL, *de = NULL, *old;
-        char buf[64];
-        va_list args;
-        int error, n;
-        va_start(args, fmt);
-        n = vsnprintf(buf, 64, fmt, args);
-        if (n >= 64 || !buf[0]) {
-                printk(KERN_WARNING "%s: invalid argument.", __FUNCTION__);
-                return -EINVAL;
-        }
-        de = _devfs_prepare_leaf(&dir, buf, MODE_DIR);
-        if (!de) {
-                PRINTK("(%s): could not prepare leaf\n", buf);
-                return -EINVAL;
-        }
-        error = _devfs_append_entry(dir, de, &old);
-        if (error == -EEXIST && S_ISDIR(old->mode)) {
-                /*
-                 * devfs_mk_dir() of an already-existing directory will
-                 * return success.
-                 */
-                error = 0;
-                goto out_put;
-        } else if (error) {
-                PRINTK("(%s): could not append to dir: %p \"%s\"\n",
-                       buf, dir, dir->name);
-                devfs_put(old);
-                goto out_put;
-        }
-        devfsd_notify(de, DEVFSD_NOTIFY_REGISTERED);
-      out_put:
-        devfs_put(dir);
-        return error;
-}
-void devfs_remove(const char *fmt, ...)
-{
-        char buf[64];
-        va_list args;
-        int n;
-        va_start(args, fmt);
-        n = vsnprintf(buf, sizeof(buf), fmt, args);
-        if (n < sizeof(buf) && buf[0]) {
-                devfs_handle_t de = _devfs_find_entry(NULL, buf, 0);
-                if (!de) {
-                        printk(KERN_ERR "%s: %s not found, cannot remove\n",
-                               __FUNCTION__, buf);
-                        dump_stack();
-                        return;
-                }
-                write_lock(&de->parent->u.dir.lock);
-                _devfs_unregister(de->parent, de);
-                devfs_put(de);
-                devfs_put(de);
-        }
-}
-/**
- *      devfs_generate_path - Generate a pathname for an entry, relative to the devfs root.
- *      @de: The devfs entry.
- *      @path: The buffer to write the pathname to. The pathname and '\0'
- *              terminator will be written at the end of the buffer.
- *      @buflen: The length of the buffer.
- *
- *      Returns the offset in the buffer where the pathname starts on success,
- *      else a negative error code.
- */
-static int devfs_generate_path(devfs_handle_t de, char *path, int buflen)
-{
-        int pos;
-#define NAMEOF(de) ( (de)->mode ? (de)->name : (de)->u.name )
-        if (de == NULL)
-                return -EINVAL;
-        VERIFY_ENTRY(de);
-        if (de->namelen >= buflen)
-                return -ENAMETOOLONG;   /*  Must be first       */
-        path[buflen - 1] = '\0';
-        if (de->parent == NULL)
-                return buflen - 1;      /*  Don't prepend root  */
-        pos = buflen - de->namelen - 1;
-        memcpy(path + pos, NAMEOF(de), de->namelen);
-        for (de = de->parent; de->parent != NULL; de = de->parent) {
-                if (pos - de->namelen - 1 < 0)
-                        return -ENAMETOOLONG;
-                path[--pos] = '/';
-                pos -= de->namelen;
-                memcpy(path + pos, NAMEOF(de), de->namelen);
-        }
-        return pos;
-}                               /*  End Function devfs_generate_path  */
-/**
- *      devfs_setup - Process kernel boot options.
- *      @str: The boot options after the "devfs=".
- */
-static int __init devfs_setup(char *str)
-{
-        static struct {
-                char *name;
-                unsigned int mask;
-                unsigned int *opt;
-        } devfs_options_tab[] __initdata = {
-#ifdef CONFIG_DEVFS_DEBUG
-                {
-                "dall", DEBUG_ALL, &devfs_debug_init}, {
-                "dmod", DEBUG_MODULE_LOAD, &devfs_debug_init}, {
-                "dreg", DEBUG_REGISTER, &devfs_debug_init}, {
-                "dunreg", DEBUG_UNREGISTER, &devfs_debug_init}, {
-                "dfree", DEBUG_FREE, &devfs_debug_init}, {
-                "diget", DEBUG_I_GET, &devfs_debug_init}, {
-                "dchange", DEBUG_SET_FLAGS, &devfs_debug_init}, {
-                "dsread", DEBUG_S_READ, &devfs_debug_init}, {
-                "dichange", DEBUG_I_CHANGE, &devfs_debug_init}, {
-                "dimknod", DEBUG_I_MKNOD, &devfs_debug_init}, {
-                "dilookup", DEBUG_I_LOOKUP, &devfs_debug_init}, {
-                "diunlink", DEBUG_I_UNLINK, &devfs_debug_init},
-#endif                          /*  CONFIG_DEVFS_DEBUG  */
-                {
-                "mount", OPTION_MOUNT, &boot_options}, {
-                NULL, 0, NULL}
-        };
-        while ((*str != '\0') && !isspace(*str)) {
-                int i, found = 0, invert = 0;
-                if (strncmp(str, "no", 2) == 0) {
-                        invert = 1;
-                        str += 2;
-                }
-                for (i = 0; devfs_options_tab[i].name != NULL; i++) {
-                        int len = strlen(devfs_options_tab[i].name);
-                        if (strncmp(str, devfs_options_tab[i].name, len) == 0) {
-                                if (invert)
-                                        *devfs_options_tab[i].opt &=
-                                            ~devfs_options_tab[i].mask;
-                                else
-                                        *devfs_options_tab[i].opt |=
-                                            devfs_options_tab[i].mask;
-                                str += len;
-                                found = 1;
-                                break;
-                        }
-                }
-                if (!found)
-                        return 0;       /*  No match         */
-                if (*str != ',')
-                        return 0;       /*  No more options  */
-                ++str;
-        }
-        return 1;
-}                               /*  End Function devfs_setup  */
-__setup("devfs=", devfs_setup);
-EXPORT_SYMBOL(devfs_mk_dir);
-EXPORT_SYMBOL(devfs_remove);
-/**
- *      try_modload - Notify devfsd of an inode lookup by a non-devfsd process.
- *      @parent: The parent devfs entry.
- *      @fs_info: The filesystem info.
- *      @name: The device name.
- *      @namelen: The number of characters in @name.
- *      @buf: A working area that will be used. This must not go out of scope
- *            until devfsd is idle again.
- *
- *      Returns 0 on success (event was queued), else a negative error code.
- */
-static int try_modload(struct devfs_entry *parent, struct fs_info *fs_info,
-                       const char *name, unsigned namelen,
-                       struct devfs_entry *buf)
-{
-        if (!(fs_info->devfsd_event_mask & (1 << DEVFSD_NOTIFY_LOOKUP)))
-                return -ENOENT;
-        if (is_devfsd_or_child(fs_info))
-                return -ENOENT;
-        memset(buf, 0, sizeof *buf);
-        atomic_set(&buf->refcount, 1);
-        buf->parent = parent;
-        buf->namelen = namelen;
-        buf->u.name = name;
-        WRITE_ENTRY_MAGIC(buf, MAGIC_VALUE);
-        if (!devfsd_notify_de(buf, DEVFSD_NOTIFY_LOOKUP, 0,
-                              current->euid, current->egid, fs_info))
-                return -ENOENT;
-        /*  Possible success: event has been queued  */
-        return 0;
-}                               /*  End Function try_modload  */
-/*  Superblock operations follow  */
-static struct inode_operations devfs_iops;
-static struct inode_operations devfs_dir_iops;
-static const struct file_operations devfs_fops;
-static const struct file_operations devfs_dir_fops;
-static struct inode_operations devfs_symlink_iops;
-static int devfs_notify_change(struct dentry *dentry, struct iattr *iattr)
-{
-        int retval;
-        struct devfs_entry *de;
-        struct inode *inode = dentry->d_inode;
-        struct fs_info *fs_info = inode->i_sb->s_fs_info;
-        de = get_devfs_entry_from_vfs_inode(inode);
-        if (de == NULL)
-                return -ENODEV;
-        retval = inode_change_ok(inode, iattr);
-        if (retval != 0)
-                return retval;
-        retval = inode_setattr(inode, iattr);
-        if (retval != 0)
-                return retval;
-        DPRINTK(DEBUG_I_CHANGE, "(%d): VFS inode: %p  devfs_entry: %p\n",
-                (int)inode->i_ino, inode, de);
-        DPRINTK(DEBUG_I_CHANGE, "():   mode: 0%o  uid: %d  gid: %d\n",
-                (int)inode->i_mode, (int)inode->i_uid, (int)inode->i_gid);
-        /*  Inode is not on hash chains, thus must save permissions here rather
-           than in a write_inode() method  */
-        de->mode = inode->i_mode;
-        de->inode.uid = inode->i_uid;
-        de->inode.gid = inode->i_gid;
-        de->inode.atime = inode->i_atime;
-        de->inode.mtime = inode->i_mtime;
-        de->inode.ctime = inode->i_ctime;
-        if ((iattr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID)) &&
-            !is_devfsd_or_child(fs_info))
-                devfsd_notify_de(de, DEVFSD_NOTIFY_CHANGE, inode->i_mode,
-                                 inode->i_uid, inode->i_gid, fs_info);
-        return 0;
-}                               /*  End Function devfs_notify_change  */
-static struct super_operations devfs_sops = {
-        .drop_inode = generic_delete_inode,
-        .statfs = simple_statfs,
-};
-/**
- *      _devfs_get_vfs_inode - Get a VFS inode.
- *      @sb: The super block.
- *      @de: The devfs inode.
- *      @dentry: The dentry to register with the devfs inode.
- *
- *      Returns the inode on success, else %NULL. An implicit devfs_get() is
- *       performed if the inode is created.
- */
-static struct inode *_devfs_get_vfs_inode(struct super_block *sb,
-                                          struct devfs_entry *de,
-                                          struct dentry *dentry)
-{
-        struct inode *inode;
-        if (de->prev == de)
-                return NULL;    /*  Quick check to see if unhooked  */
-        if ((inode = new_inode(sb)) == NULL) {
-                PRINTK("(%s): new_inode() failed, de: %p\n", de->name, de);
-                return NULL;
-        }
-        if (de->parent) {
-                read_lock(&de->parent->u.dir.lock);
-                if (de->prev != de)
-                        de->inode.dentry = dentry;      /*      Not unhooked  */
-                read_unlock(&de->parent->u.dir.lock);
-        } else
-                de->inode.dentry = dentry;      /*  Root: no locking needed  */
-        if (de->inode.dentry != dentry) {       /*  Must have been unhooked  */
-                iput(inode);
-                return NULL;
-        }
-        /* FIXME where is devfs_put? */
-        inode->u.generic_ip = devfs_get(de);
-        inode->i_ino = de->inode.ino;
-        DPRINTK(DEBUG_I_GET, "(%d): VFS inode: %p  devfs_entry: %p\n",
-                (int)inode->i_ino, inode, de);
-        inode->i_blocks = 0;
-        inode->i_blksize = FAKE_BLOCK_SIZE;
-        inode->i_op = &devfs_iops;
-        inode->i_mode = de->mode;
-        if (S_ISDIR(de->mode)) {
-                inode->i_op = &devfs_dir_iops;
-                inode->i_fop = &devfs_dir_fops;
-        } else if (S_ISLNK(de->mode)) {
-                inode->i_op = &devfs_symlink_iops;
-                inode->i_size = de->u.symlink.length;
-        } else if (S_ISCHR(de->mode) || S_ISBLK(de->mode)) {
-                init_special_inode(inode, de->mode, de->u.dev);
-        } else if (S_ISFIFO(de->mode) || S_ISSOCK(de->mode)) {
-                init_special_inode(inode, de->mode, 0);
-        } else {
-                PRINTK("(%s): unknown mode %o de: %p\n",
-                       de->name, de->mode, de);
-                iput(inode);
-                devfs_put(de);
-                return NULL;
-        }
-        inode->i_uid = de->inode.uid;
-        inode->i_gid = de->inode.gid;
-        inode->i_atime = de->inode.atime;
-        inode->i_mtime = de->inode.mtime;
-        inode->i_ctime = de->inode.ctime;
-        DPRINTK(DEBUG_I_GET, "():   mode: 0%o  uid: %d  gid: %d\n",
-                (int)inode->i_mode, (int)inode->i_uid, (int)inode->i_gid);
-        return inode;
-}                               /*  End Function _devfs_get_vfs_inode  */
-/*  File operations for device entries follow  */
-static int devfs_readdir(struct file *file, void *dirent, filldir_t filldir)
-{
-        int err, count;
-        int stored = 0;
-        struct fs_info *fs_info;
-        struct devfs_entry *parent, *de, *next = NULL;
-        struct inode *inode = file->f_dentry->d_inode;
-        fs_info = inode->i_sb->s_fs_info;
-        parent = get_devfs_entry_from_vfs_inode(file->f_dentry->d_inode);
-        if ((long)file->f_pos < 0)
-                return -EINVAL;
-        DPRINTK(DEBUG_F_READDIR, "(%s): fs_info: %p  pos: %ld\n",
-                parent->name, fs_info, (long)file->f_pos);
-        switch ((long)file->f_pos) {
-        case 0:
-                err = (*filldir) (dirent, "..", 2, file->f_pos,
-                                  parent_ino(file->f_dentry), DT_DIR);
-                if (err == -EINVAL)
-                        break;
-                if (err < 0)
-                        return err;
-                file->f_pos++;
-                ++stored;
-                /*  Fall through  */
-        case 1:
-                err =
-                    (*filldir) (dirent, ".", 1, file->f_pos, inode->i_ino,
-                                DT_DIR);
-                if (err == -EINVAL)
-                        break;
-                if (err < 0)
-                        return err;
-                file->f_pos++;
-                ++stored;
-                /*  Fall through  */
-        default:
-                /*  Skip entries  */
-                count = file->f_pos - 2;
-                read_lock(&parent->u.dir.lock);
-                for (de = parent->u.dir.first; de && (count > 0); de = de->next)
-                        --count;
-                devfs_get(de);
-                read_unlock(&parent->u.dir.lock);
-                /*  Now add all remaining entries  */
-                while (de) {
-                        err = (*filldir) (dirent, de->name, de->namelen,
-                                          file->f_pos, de->inode.ino,
-                                          de->mode >> 12);
-                        if (err < 0)
-                                devfs_put(de);
-                        else {
-                                file->f_pos++;
-                                ++stored;
-                        }
-                        if (err == -EINVAL)
-                                break;
-                        if (err < 0)
-                                return err;
-                        read_lock(&parent->u.dir.lock);
-                        next = devfs_get(de->next);
-                        read_unlock(&parent->u.dir.lock);
-                        devfs_put(de);
-                        de = next;
-                }
-                break;
-        }
-        return stored;
-}                               /*  End Function devfs_readdir  */
-/* Open devfs specific special files */
-static int devfs_open(struct inode *inode, struct file *file)
-{
-        int err;
-        int minor = MINOR(inode->i_rdev);
-        struct file_operations *old_fops, *new_fops;
-        switch (minor) {
-        case 0:         /* /dev/.devfsd */
-                new_fops = fops_get(&devfsd_fops);
-                break;
-#ifdef CONFIG_DEVFS_DEBUG
-        case 1:         /* /dev/.stat */
-                new_fops = fops_get(&stat_fops);
-                break;
-#endif
-        default:
-                return -ENODEV;
-        }
-        if (new_fops == NULL)
-                return -ENODEV;
-        old_fops = file->f_op;
-        file->f_op = new_fops;
-        err = new_fops->open ? new_fops->open(inode, file) : 0;
-        if (err) {
-                file->f_op = old_fops;
-                fops_put(new_fops);
-        } else
-                fops_put(old_fops);
-        return err;
-}                               /*  End Function devfs_open  */
-static const struct file_operations devfs_fops = {
-        .open = devfs_open,
-};
-static const struct file_operations devfs_dir_fops = {
-        .read = generic_read_dir,
-        .readdir = devfs_readdir,
-};
-/*  Dentry operations for device entries follow  */
-/**
- *      devfs_d_release - Callback for when a dentry is freed.
- *      @dentry: The dentry.
- */
-static void devfs_d_release(struct dentry *dentry)
-{
-        DPRINTK(DEBUG_D_RELEASE, "(%p): inode: %p\n", dentry, dentry->d_inode);
-}                               /*  End Function devfs_d_release  */
-/**
- *      devfs_d_iput - Callback for when a dentry loses its inode.
- *      @dentry: The dentry.
- *      @inode: The inode.
- */
-static void devfs_d_iput(struct dentry *dentry, struct inode *inode)
-{
-        struct devfs_entry *de;
-        de = get_devfs_entry_from_vfs_inode(inode);
-        DPRINTK(DEBUG_D_IPUT,
-                "(%s): dentry: %p inode: %p de: %p de->dentry: %p\n", de->name,
-                dentry, inode, de, de->inode.dentry);
-        if (de->inode.dentry && (de->inode.dentry != dentry))
-                OOPS("(%s): de: %p dentry: %p de->dentry: %p\n",
-                     de->name, de, dentry, de->inode.dentry);
-        de->inode.dentry = NULL;
-        iput(inode);
-        devfs_put(de);
-}                               /*  End Function devfs_d_iput  */
-static int devfs_d_delete(struct dentry *dentry);
-static struct dentry_operations devfs_dops = {
-        .d_delete = devfs_d_delete,
-        .d_release = devfs_d_release,
-        .d_iput = devfs_d_iput,
-};
-static int devfs_d_revalidate_wait(struct dentry *dentry, struct nameidata *);
-static struct dentry_operations devfs_wait_dops = {
-        .d_delete = devfs_d_delete,
-        .d_release = devfs_d_release,
-        .d_iput = devfs_d_iput,
-        .d_revalidate = devfs_d_revalidate_wait,
-};
-/**
- *      devfs_d_delete - Callback for when all files for a dentry are closed.
- *      @dentry: The dentry.
- */
-static int devfs_d_delete(struct dentry *dentry)
-{
-        struct inode *inode = dentry->d_inode;
-        if (dentry->d_op == &devfs_wait_dops)
-                dentry->d_op = &devfs_dops;
-        /*  Unhash dentry if negative (has no inode)  */
-        if (inode == NULL) {
-                DPRINTK(DEBUG_D_DELETE, "(%p): dropping negative dentry\n",
-                        dentry);
-                return 1;
-        }
-        return 0;
-}                               /*  End Function devfs_d_delete  */
-struct devfs_lookup_struct {
-        devfs_handle_t de;
-        wait_queue_head_t wait_queue;
-};
-/* XXX: this doesn't handle the case where we got a negative dentry
-        but a devfs entry has been registered in the meanwhile */
-static int devfs_d_revalidate_wait(struct dentry *dentry, struct nameidata *nd)
-{
-        struct inode *dir = dentry->d_parent->d_inode;
-        struct fs_info *fs_info = dir->i_sb->s_fs_info;
-        devfs_handle_t parent = get_devfs_entry_from_vfs_inode(dir);
-        struct devfs_lookup_struct *lookup_info = dentry->d_fsdata;
-        DECLARE_WAITQUEUE(wait, current);
-        int need_lock;
-        /*
-         * FIXME HACK
-         *
-         * make sure that
-         *   d_instantiate always runs under lock
-         *   we release i_mutex lock before going to sleep
-         *
-         * unfortunately sometimes d_revalidate is called with
-         * and sometimes without i_mutex lock held. The following checks
-         * attempt to deduce when we need to add (and drop resp.) lock
-         * here. This relies on current (2.6.2) calling coventions:
-         *
-         *   lookup_hash is always run under i_mutex and is passing NULL
-         *   as nd
-         *
-         *   open(...,O_CREATE,...) calls _lookup_hash under i_mutex
-         *   and sets flags to LOOKUP_OPEN|LOOKUP_CREATE
-         *
-         *   all other invocations of ->d_revalidate seem to happen
-         *   outside of i_mutex
-         */
-        need_lock = nd &&
-            (!(nd->flags & LOOKUP_CREATE) || (nd->flags & LOOKUP_PARENT));
-        if (need_lock)
-                mutex_lock(&dir->i_mutex);
-        if (is_devfsd_or_child(fs_info)) {
-                devfs_handle_t de = lookup_info->de;
-                struct inode *inode;
-                DPRINTK(DEBUG_I_LOOKUP,
-                        "(%s): dentry: %p inode: %p de: %p by: \"%s\"\n",
-                        dentry->d_name.name, dentry, dentry->d_inode, de,
-                        current->comm);
-                if (dentry->d_inode)
-                        goto out;
-                if (de == NULL) {
-                        read_lock(&parent->u.dir.lock);
-                        de = _devfs_search_dir(parent, dentry->d_name.name,
-                                               dentry->d_name.len);
-                        read_unlock(&parent->u.dir.lock);
-                        if (de == NULL)
-                                goto out;
-                        lookup_info->de = de;
-                }
-                /*  Create an inode, now that the driver information is available  */
-                inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry);
-                if (!inode)
-                        goto out;
-                DPRINTK(DEBUG_I_LOOKUP,
-                        "(%s): new VFS inode(%u): %p de: %p by: \"%s\"\n",
-                        de->name, de->inode.ino, inode, de, current->comm);
-                d_instantiate(dentry, inode);
-                goto out;
-        }
-        if (lookup_info == NULL)
-                goto out;       /*  Early termination  */
-        read_lock(&parent->u.dir.lock);
-        if (dentry->d_fsdata) {
-                set_current_state(TASK_UNINTERRUPTIBLE);
-                add_wait_queue(&lookup_info->wait_queue, &wait);
-                read_unlock(&parent->u.dir.lock);
-                /* at this point it is always (hopefully) locked */
-                mutex_unlock(&dir->i_mutex);
-                schedule();
-                mutex_lock(&dir->i_mutex);
-                /*
-                 * This does not need nor should remove wait from wait_queue.
-                 * Wait queue head is never reused - nothing is ever added to it
-                 * after all waiters have been waked up and head itself disappears
-                 * very soon after it. Moreover it is local variable on stack that
-                 * is likely to have already disappeared so any reference to it
-                 * at this point is buggy.
-                 */
-        } else
-                read_unlock(&parent->u.dir.lock);
-      out:
-        if (need_lock)
-                mutex_unlock(&dir->i_mutex);
-        return 1;
-}                               /*  End Function devfs_d_revalidate_wait  */
-/*  Inode operations for device entries follow  */
-static struct dentry *devfs_lookup(struct inode *dir, struct dentry *dentry,
-                                   struct nameidata *nd)
-{
-        struct devfs_entry tmp; /*  Must stay in scope until devfsd idle again  */
-        struct devfs_lookup_struct lookup_info;
-        struct fs_info *fs_info = dir->i_sb->s_fs_info;
-        struct devfs_entry *parent, *de;
-        struct inode *inode;
-        struct dentry *retval = NULL;
-        /*  Set up the dentry operations before anything else, to ensure cleaning
-           up on any error  */
-        dentry->d_op = &devfs_dops;
-        /*  First try to get the devfs entry for this directory  */
-        parent = get_devfs_entry_from_vfs_inode(dir);
-        DPRINTK(DEBUG_I_LOOKUP, "(%s): dentry: %p parent: %p by: \"%s\"\n",
-                dentry->d_name.name, dentry, parent, current->comm);
-        if (parent == NULL)
-                return ERR_PTR(-ENOENT);
-        read_lock(&parent->u.dir.lock);
-        de = _devfs_search_dir(parent, dentry->d_name.name, dentry->d_name.len);
-        read_unlock(&parent->u.dir.lock);
-        lookup_info.de = de;
-        init_waitqueue_head(&lookup_info.wait_queue);
-        dentry->d_fsdata = &lookup_info;
-        if (de == NULL) {       /*  Try with devfsd. For any kind of failure, leave a negative dentry
-                                   so someone else can deal with it (in the case where the sysadmin
-                                   does a mknod()). It's important to do this before hashing the
-                                   dentry, so that the devfsd queue is filled before revalidates
-                                   can start  */
-                if (try_modload(parent, fs_info, dentry->d_name.name, dentry->d_name.len, &tmp) < 0) {  /*  Lookup event was not queued to devfsd  */
-                        d_add(dentry, NULL);
-                        return NULL;
-                }
-        }
-        dentry->d_op = &devfs_wait_dops;
-        d_add(dentry, NULL);    /*  Open the floodgates  */
-        /*  Unlock directory semaphore, which will release any waiters. They
-           will get the hashed dentry, and may be forced to wait for
-           revalidation  */
-        mutex_unlock(&dir->i_mutex);
-        wait_for_devfsd_finished(fs_info);      /*  If I'm not devfsd, must wait  */
-        mutex_lock(&dir->i_mutex);      /*  Grab it again because them's the rules  */
-        de = lookup_info.de;
-        /*  If someone else has been so kind as to make the inode, we go home
-           early  */
-        if (dentry->d_inode)
-                goto out;
-        if (de == NULL) {
-                read_lock(&parent->u.dir.lock);
-                de = _devfs_search_dir(parent, dentry->d_name.name,
-                                       dentry->d_name.len);
-                read_unlock(&parent->u.dir.lock);
-                if (de == NULL)
-                        goto out;
-                /*  OK, there's an entry now, but no VFS inode yet  */
-        }
-        /*  Create an inode, now that the driver information is available  */
-        inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry);
-        if (!inode) {
-                retval = ERR_PTR(-ENOMEM);
-                goto out;
-        }
-        DPRINTK(DEBUG_I_LOOKUP,
-                "(%s): new VFS inode(%u): %p de: %p by: \"%s\"\n", de->name,
-                de->inode.ino, inode, de, current->comm);
-        d_instantiate(dentry, inode);
-      out:
-        write_lock(&parent->u.dir.lock);
-        dentry->d_op = &devfs_dops;
-        dentry->d_fsdata = NULL;
-        wake_up(&lookup_info.wait_queue);
-        write_unlock(&parent->u.dir.lock);
-        devfs_put(de);
-        return retval;
-}                               /*  End Function devfs_lookup  */
-static int devfs_unlink(struct inode *dir, struct dentry *dentry)
-{
-        int unhooked;
-        struct devfs_entry *de;
-        struct inode *inode = dentry->d_inode;
-        struct fs_info *fs_info = dir->i_sb->s_fs_info;
-        de = get_devfs_entry_from_vfs_inode(inode);
-        DPRINTK(DEBUG_I_UNLINK, "(%s): de: %p\n", dentry->d_name.name, de);
-        if (de == NULL)
-                return -ENOENT;
-        if (!de->vfs)
-                return -EPERM;
-        write_lock(&de->parent->u.dir.lock);
-        unhooked = _devfs_unhook(de);
-        write_unlock(&de->parent->u.dir.lock);
-        if (!unhooked)
-                return -ENOENT;
-        if (!is_devfsd_or_child(fs_info))
-                devfsd_notify_de(de, DEVFSD_NOTIFY_DELETE, inode->i_mode,
-                                 inode->i_uid, inode->i_gid, fs_info);
-        free_dentry(de);
-        devfs_put(de);
-        return 0;
-}                               /*  End Function devfs_unlink  */
-static int devfs_symlink(struct inode *dir, struct dentry *dentry,
-                         const char *symname)
-{
-        int err;
-        struct fs_info *fs_info = dir->i_sb->s_fs_info;
-        struct devfs_entry *parent, *de;
-        struct inode *inode;
-        /*  First try to get the devfs entry for this directory  */
-        parent = get_devfs_entry_from_vfs_inode(dir);
-        if (parent == NULL)
-                return -ENOENT;
-        err = devfs_do_symlink(parent, dentry->d_name.name, symname, &de);
-        DPRINTK(DEBUG_DISABLED, "(%s): errcode from <devfs_do_symlink>: %d\n",
-                dentry->d_name.name, err);
-        if (err < 0)
-                return err;
-        de->vfs = TRUE;
-        de->inode.uid = current->euid;
-        de->inode.gid = current->egid;
-        de->inode.atime = CURRENT_TIME;
-        de->inode.mtime = CURRENT_TIME;
-        de->inode.ctime = CURRENT_TIME;
-        if ((inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry)) == NULL)
-                return -ENOMEM;
-        DPRINTK(DEBUG_DISABLED, "(%s): new VFS inode(%u): %p  dentry: %p\n",
-                dentry->d_name.name, de->inode.ino, inode, dentry);
-        d_instantiate(dentry, inode);
-        if (!is_devfsd_or_child(fs_info))
-                devfsd_notify_de(de, DEVFSD_NOTIFY_CREATE, inode->i_mode,
-                                 inode->i_uid, inode->i_gid, fs_info);
-        return 0;
-}                               /*  End Function devfs_symlink  */
-static int devfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
-        int err;
-        struct fs_info *fs_info = dir->i_sb->s_fs_info;
-        struct devfs_entry *parent, *de;
-        struct inode *inode;
-        mode = (mode & ~S_IFMT) | S_IFDIR;      /*  VFS doesn't pass S_IFMT part  */
-        parent = get_devfs_entry_from_vfs_inode(dir);
-        if (parent == NULL)
-                return -ENOENT;
-        de = _devfs_alloc_entry(dentry->d_name.name, dentry->d_name.len, mode);
-        if (!de)
-                return -ENOMEM;
-        de->vfs = TRUE;
-        if ((err = _devfs_append_entry(parent, de, NULL)) != 0)
-                return err;
-        de->inode.uid = current->euid;
-        de->inode.gid = current->egid;
-        de->inode.atime = CURRENT_TIME;
-        de->inode.mtime = CURRENT_TIME;
-        de->inode.ctime = CURRENT_TIME;
-        if ((inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry)) == NULL)
-                return -ENOMEM;
-        DPRINTK(DEBUG_DISABLED, "(%s): new VFS inode(%u): %p  dentry: %p\n",
-                dentry->d_name.name, de->inode.ino, inode, dentry);
-        d_instantiate(dentry, inode);
-        if (!is_devfsd_or_child(fs_info))
-                devfsd_notify_de(de, DEVFSD_NOTIFY_CREATE, inode->i_mode,
-                                 inode->i_uid, inode->i_gid, fs_info);
-        return 0;
-}                               /*  End Function devfs_mkdir  */
-static int devfs_rmdir(struct inode *dir, struct dentry *dentry)
-{
-        int err = 0;
-        struct devfs_entry *de;
-        struct fs_info *fs_info = dir->i_sb->s_fs_info;
-        struct inode *inode = dentry->d_inode;
-        if (dir->i_sb->s_fs_info != inode->i_sb->s_fs_info)
-                return -EINVAL;
-        de = get_devfs_entry_from_vfs_inode(inode);
-        if (de == NULL)
-                return -ENOENT;
-        if (!S_ISDIR(de->mode))
-                return -ENOTDIR;
-        if (!de->vfs)
-                return -EPERM;
-        /*  First ensure the directory is empty and will stay that way  */
-        write_lock(&de->u.dir.lock);
-        if (de->u.dir.first)
-                err = -ENOTEMPTY;
-        else
-                de->u.dir.no_more_additions = TRUE;
-        write_unlock(&de->u.dir.lock);
-        if (err)
-                return err;
-        /*  Now unhook the directory from its parent  */
-        write_lock(&de->parent->u.dir.lock);
-        if (!_devfs_unhook(de))
-                err = -ENOENT;
-        write_unlock(&de->parent->u.dir.lock);
-        if (err)
-                return err;
-        if (!is_devfsd_or_child(fs_info))
-                devfsd_notify_de(de, DEVFSD_NOTIFY_DELETE, inode->i_mode,
-                                 inode->i_uid, inode->i_gid, fs_info);
-        free_dentry(de);
-        devfs_put(de);
-        return 0;
-}                               /*  End Function devfs_rmdir  */
-static int devfs_mknod(struct inode *dir, struct dentry *dentry, int mode,
-                       dev_t rdev)
-{
-        int err;
-        struct fs_info *fs_info = dir->i_sb->s_fs_info;
-        struct devfs_entry *parent, *de;
-        struct inode *inode;
-        DPRINTK(DEBUG_I_MKNOD, "(%s): mode: 0%o  dev: %u:%u\n",
-                dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev));
-        parent = get_devfs_entry_from_vfs_inode(dir);
-        if (parent == NULL)
-                return -ENOENT;
-        de = _devfs_alloc_entry(dentry->d_name.name, dentry->d_name.len, mode);
-        if (!de)
-                return -ENOMEM;
-        de->vfs = TRUE;
-        if (S_ISCHR(mode) || S_ISBLK(mode))
-                de->u.dev = rdev;
-        if ((err = _devfs_append_entry(parent, de, NULL)) != 0)
-                return err;
-        de->inode.uid = current->euid;
-        de->inode.gid = current->egid;
-        de->inode.atime = CURRENT_TIME;
-        de->inode.mtime = CURRENT_TIME;
-        de->inode.ctime = CURRENT_TIME;
-        if ((inode = _devfs_get_vfs_inode(dir->i_sb, de, dentry)) == NULL)
-                return -ENOMEM;
-        DPRINTK(DEBUG_I_MKNOD, ":   new VFS inode(%u): %p  dentry: %p\n",
-                de->inode.ino, inode, dentry);
-        d_instantiate(dentry, inode);
-        if (!is_devfsd_or_child(fs_info))
-                devfsd_notify_de(de, DEVFSD_NOTIFY_CREATE, inode->i_mode,
-                                 inode->i_uid, inode->i_gid, fs_info);
-        return 0;
-}                               /*  End Function devfs_mknod  */
-static void *devfs_follow_link(struct dentry *dentry, struct nameidata *nd)
-{
-        struct devfs_entry *p = get_devfs_entry_from_vfs_inode(dentry->d_inode);
-        nd_set_link(nd, p ? p->u.symlink.linkname : ERR_PTR(-ENODEV));
-        return NULL;
-}                               /*  End Function devfs_follow_link  */
-static struct inode_operations devfs_iops = {
-        .setattr = devfs_notify_change,
-};
-static struct inode_operations devfs_dir_iops = {
-        .lookup = devfs_lookup,
-        .unlink = devfs_unlink,
-        .symlink = devfs_symlink,
-        .mkdir = devfs_mkdir,
-        .rmdir = devfs_rmdir,
-        .mknod = devfs_mknod,
-        .setattr = devfs_notify_change,
-};
-static struct inode_operations devfs_symlink_iops = {
-        .readlink = generic_readlink,
-        .follow_link = devfs_follow_link,
-        .setattr = devfs_notify_change,
-};
-static int devfs_fill_super(struct super_block *sb, void *data, int silent)
-{
-        struct inode *root_inode = NULL;
-        if (_devfs_get_root_entry() == NULL)
-                goto out_no_root;
-        atomic_set(&fs_info.devfsd_overrun_count, 0);
-        init_waitqueue_head(&fs_info.devfsd_wait_queue);
-        init_waitqueue_head(&fs_info.revalidate_wait_queue);
-        fs_info.sb = sb;
-        sb->s_fs_info = &fs_info;
-        sb->s_blocksize = 1024;
-        sb->s_blocksize_bits = 10;
-        sb->s_magic = DEVFS_SUPER_MAGIC;
-        sb->s_op = &devfs_sops;
-        sb->s_time_gran = 1;
-        if ((root_inode = _devfs_get_vfs_inode(sb, root_entry, NULL)) == NULL)
-                goto out_no_root;
-        sb->s_root = d_alloc_root(root_inode);
-        if (!sb->s_root)
-                goto out_no_root;
-        DPRINTK(DEBUG_S_READ, "(): made devfs ptr: %p\n", sb->s_fs_info);
-        return 0;
-      out_no_root:
-        PRINTK("(): get root inode failed\n");
-        if (root_inode)
-                iput(root_inode);
-        return -EINVAL;
-}                               /*  End Function devfs_fill_super  */
-static int devfs_get_sb(struct file_system_type *fs_type,
-                        int flags, const char *dev_name,
-                        void *data, struct vfsmount *mnt)
-{
-        return get_sb_single(fs_type, flags, data, devfs_fill_super, mnt);
-}
-static struct file_system_type devfs_fs_type = {
-        .name = DEVFS_NAME,
-        .get_sb = devfs_get_sb,
-        .kill_sb = kill_anon_super,
-};
-/*  File operations for devfsd follow  */
-static ssize_t devfsd_read(struct file *file, char __user *buf, size_t len,
-                           loff_t * ppos)
-{
-        int done = FALSE;
-        int ival;
-        loff_t pos, devname_offset, tlen, rpos;
-        devfs_handle_t de;
-        struct devfsd_buf_entry *entry;
-        struct fs_info *fs_info = file->f_dentry->d_inode->i_sb->s_fs_info;
-        struct devfsd_notify_struct *info = fs_info->devfsd_info;
-        DECLARE_WAITQUEUE(wait, current);
-        /*  Verify the task has grabbed the queue  */
-        if (fs_info->devfsd_task != current)
-                return -EPERM;
-        info->major = 0;
-        info->minor = 0;
-        /*  Block for a new entry  */
-        set_current_state(TASK_INTERRUPTIBLE);
-        add_wait_queue(&fs_info->devfsd_wait_queue, &wait);
-        while (devfsd_queue_empty(fs_info)) {
-                fs_info->devfsd_sleeping = TRUE;
-                wake_up(&fs_info->revalidate_wait_queue);
-                schedule();
-                fs_info->devfsd_sleeping = FALSE;
-                if (signal_pending(current)) {
-                        remove_wait_queue(&fs_info->devfsd_wait_queue, &wait);
-                        __set_current_state(TASK_RUNNING);
-                        return -EINTR;
-                }
-                set_current_state(TASK_INTERRUPTIBLE);
-        }
-        remove_wait_queue(&fs_info->devfsd_wait_queue, &wait);
-        __set_current_state(TASK_RUNNING);
-        /*  Now play with the data  */
-        ival = atomic_read(&fs_info->devfsd_overrun_count);
-        info->overrun_count = ival;
-        entry = fs_info->devfsd_first_event;
-        info->type = entry->type;
-        info->mode = entry->mode;
-        info->uid = entry->uid;
-        info->gid = entry->gid;
-        de = entry->de;
-        if (S_ISCHR(de->mode) || S_ISBLK(de->mode)) {
-                info->major = MAJOR(de->u.dev);
-                info->minor = MINOR(de->u.dev);
-        }
-        pos = devfs_generate_path(de, info->devname, DEVFS_PATHLEN);
-        if (pos < 0)
-                return pos;
-        info->namelen = DEVFS_PATHLEN - pos - 1;
-        if (info->mode == 0)
-                info->mode = de->mode;
-        devname_offset = info->devname - (char *)info;
-        rpos = *ppos;
-        if (rpos < devname_offset) {
-                /*  Copy parts of the header  */
-                tlen = devname_offset - rpos;
-                if (tlen > len)
-                        tlen = len;
-                if (copy_to_user(buf, (char *)info + rpos, tlen)) {
-                        return -EFAULT;
-                }
-                rpos += tlen;
-                buf += tlen;
-                len -= tlen;
-        }
-        if ((rpos >= devname_offset) && (len > 0)) {
-                /*  Copy the name  */
-                tlen = info->namelen + 1;
-                if (tlen > len)
-                        tlen = len;
-                else
-                        done = TRUE;
-                if (copy_to_user
-                    (buf, info->devname + pos + rpos - devname_offset, tlen)) {
-                        return -EFAULT;
-                }
-                rpos += tlen;
-        }
-        tlen = rpos - *ppos;
-        if (done) {
-                devfs_handle_t parent;
-                spin_lock(&fs_info->devfsd_buffer_lock);
-                fs_info->devfsd_first_event = entry->next;
-                if (entry->next == NULL)
-                        fs_info->devfsd_last_event = NULL;
-                spin_unlock(&fs_info->devfsd_buffer_lock);
-                for (; de != NULL; de = parent) {
-                        parent = de->parent;
-                        devfs_put(de);
-                }
-                kmem_cache_free(devfsd_buf_cache, entry);
-                if (ival > 0)
-                        atomic_sub(ival, &fs_info->devfsd_overrun_count);
-                *ppos = 0;
-        } else
-                *ppos = rpos;
-        return tlen;
-}                               /*  End Function devfsd_read  */
-static int devfsd_ioctl(struct inode *inode, struct file *file,
-                        unsigned int cmd, unsigned long arg)
-{
-        int ival;
-        struct fs_info *fs_info = inode->i_sb->s_fs_info;
-        switch (cmd) {
-        case DEVFSDIOC_GET_PROTO_REV:
-                ival = DEVFSD_PROTOCOL_REVISION_KERNEL;
-                if (copy_to_user((void __user *)arg, &ival, sizeof ival))
-                        return -EFAULT;
-                break;
-        case DEVFSDIOC_SET_EVENT_MASK:
-                /*  Ensure only one reader has access to the queue. This scheme will
-                   work even if the global kernel lock were to be removed, because it
-                   doesn't matter who gets in first, as long as only one gets it  */
-                if (fs_info->devfsd_task == NULL) {
-                        static DEFINE_SPINLOCK(lock);
-                        if (!spin_trylock(&lock))
-                                return -EBUSY;
-                        if (fs_info->devfsd_task != NULL) {     /*  We lost the race...  */
-                                spin_unlock(&lock);
-                                return -EBUSY;
-                        }
-                        fs_info->devfsd_task = current;
-                        spin_unlock(&lock);
-                        fs_info->devfsd_pgrp =
-                            (process_group(current) ==
-                             current->pid) ? process_group(current) : 0;
-                        fs_info->devfsd_file = file;
-                        fs_info->devfsd_info =
-                            kmalloc(sizeof *fs_info->devfsd_info, GFP_KERNEL);
-                        if (!fs_info->devfsd_info) {
-                                devfsd_close(inode, file);
-                                return -ENOMEM;
-                        }
-                } else if (fs_info->devfsd_task != current)
-                        return -EBUSY;
-                fs_info->devfsd_event_mask = arg;       /*  Let the masses come forth  */
-                break;
-        case DEVFSDIOC_RELEASE_EVENT_QUEUE:
-                if (fs_info->devfsd_file != file)
-                        return -EPERM;
-                return devfsd_close(inode, file);
-                /*break; */
-#ifdef CONFIG_DEVFS_DEBUG
-        case DEVFSDIOC_SET_DEBUG_MASK:
-                if (copy_from_user(&ival, (void __user *)arg, sizeof ival))
-                        return -EFAULT;
-                devfs_debug = ival;
-                break;
-#endif
-        default:
-                return -ENOIOCTLCMD;
-        }
-        return 0;
-}                               /*  End Function devfsd_ioctl  */
-static int devfsd_close(struct inode *inode, struct file *file)
-{
-        struct devfsd_buf_entry *entry, *next;
-        struct fs_info *fs_info = inode->i_sb->s_fs_info;
-        if (fs_info->devfsd_file != file)
-                return 0;
-        fs_info->devfsd_event_mask = 0;
-        fs_info->devfsd_file = NULL;
-        spin_lock(&fs_info->devfsd_buffer_lock);
-        entry = fs_info->devfsd_first_event;
-        fs_info->devfsd_first_event = NULL;
-        fs_info->devfsd_last_event = NULL;
-        kfree(fs_info->devfsd_info);
-        fs_info->devfsd_info = NULL;
-        spin_unlock(&fs_info->devfsd_buffer_lock);
-        fs_info->devfsd_pgrp = 0;
-        fs_info->devfsd_task = NULL;
-        wake_up(&fs_info->revalidate_wait_queue);
-        for (; entry; entry = next) {
-                next = entry->next;
-                kmem_cache_free(devfsd_buf_cache, entry);
-        }
-        return 0;
-}                               /*  End Function devfsd_close  */
-#ifdef CONFIG_DEVFS_DEBUG
-static ssize_t stat_read(struct file *file, char __user *buf, size_t len,
-                         loff_t * ppos)
-{
-        ssize_t num;
-        char txt[80];
-        num = sprintf(txt, "Number of entries: %u  number of bytes: %u\n",
-                      stat_num_entries, stat_num_bytes) + 1;
-        if (*ppos >= num)
-                return 0;
-        if (*ppos + len > num)
-                len = num - *ppos;
-        if (copy_to_user(buf, txt + *ppos, len))
-                return -EFAULT;
-        *ppos += len;
-        return len;
-}                               /*  End Function stat_read  */
-#endif
-static int __init init_devfs_fs(void)
-{
-        int err;
-        int major;
-        struct devfs_entry *devfsd;
-#ifdef CONFIG_DEVFS_DEBUG
-        struct devfs_entry *stat;
-#endif
-        if (_devfs_get_root_entry() == NULL)
-                return -ENOMEM;
-        printk(KERN_INFO "%s: %s Richard Gooch (rgooch@atnf.csiro.au)\n",
-               DEVFS_NAME, DEVFS_VERSION);
-        devfsd_buf_cache = kmem_cache_create("devfsd_event",
-                                             sizeof(struct devfsd_buf_entry),
-                                             0, 0, NULL, NULL);
-        if (!devfsd_buf_cache)
-                OOPS("(): unable to allocate event slab\n");
-#ifdef CONFIG_DEVFS_DEBUG
-        devfs_debug = devfs_debug_init;
-        printk(KERN_INFO "%s: devfs_debug: 0x%0x\n", DEVFS_NAME, devfs_debug);
-#endif
-        printk(KERN_INFO "%s: boot_options: 0x%0x\n", DEVFS_NAME, boot_options);
-        /* register special device for devfsd communication */
-        major = register_chrdev(0, "devfs", &devfs_fops);
-        if (major < 0)
-                return major;
-        /*  And create the entry for ".devfsd"  */
-        devfsd = _devfs_alloc_entry(".devfsd", 0, S_IFCHR | S_IRUSR | S_IWUSR);
-        if (devfsd == NULL)
-                return -ENOMEM;
-        devfsd->u.dev = MKDEV(major, 0);
-        _devfs_append_entry(root_entry, devfsd, NULL);
-#ifdef CONFIG_DEVFS_DEBUG
-        stat = _devfs_alloc_entry(".stat", 0, S_IFCHR | S_IRUGO);
-        if (stat == NULL)
-                return -ENOMEM;
-        stat->u.dev = MKDEV(major, 1);
-        _devfs_append_entry(root_entry, stat, NULL);
-#endif
-        err = register_filesystem(&devfs_fs_type);
-        return err;
-}                               /*  End Function init_devfs_fs  */
-void __init mount_devfs_fs(void)
-{
-        int err;
-        if (!(boot_options & OPTION_MOUNT))
-                return;
-        err = do_mount("none", "/dev", "devfs", 0, NULL);
-        if (err == 0)
-                printk(KERN_INFO "Mounted devfs on /dev\n");
-        else
-                PRINTK("(): unable to mount devfs, err: %d\n", err);
-}                               /*  End Function mount_devfs_fs  */
-module_init(init_devfs_fs)
diff --git a/fs/devfs/util.c b/fs/devfs/util.c
deleted file mode 100644
index db06d388c9ac..000000000000
--- a/fs/devfs/util.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/*  devfs (Device FileSystem) utilities.
-    Copyright (C) 1999-2002  Richard Gooch
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-    You should have received a copy of the GNU Library General Public
-    License along with this library; if not, write to the Free
-    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-    Richard Gooch may be reached by email at  rgooch@atnf.csiro.au
-    The postal address is:
-      Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
-    ChangeLog
-    19991031   Richard Gooch <rgooch@atnf.csiro.au>
-               Created.
-    19991103   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <_devfs_convert_name> and supported SCSI and IDE CD-ROMs
-    20000203   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed operations pointer type to void *.
-    20000621   Richard Gooch <rgooch@atnf.csiro.au>
-               Changed interface to <devfs_register_series>.
-    20000622   Richard Gooch <rgooch@atnf.csiro.au>
-               Took account of interface change to <devfs_mk_symlink>.
-               Took account of interface change to <devfs_mk_dir>.
-    20010519   Richard Gooch <rgooch@atnf.csiro.au>
-               Documentation cleanup.
-    20010709   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_*alloc_major> and <devfs_*alloc_devnum>.
-    20010710   Richard Gooch <rgooch@atnf.csiro.au>
-               Created <devfs_*alloc_unique_number>.
-    20010730   Richard Gooch <rgooch@atnf.csiro.au>
-               Documentation typo fix.
-    20010806   Richard Gooch <rgooch@atnf.csiro.au>
-               Made <block_semaphore> and <char_semaphore> private.
-    20010813   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bug in <devfs_alloc_unique_number>: limited to 128 numbers
-    20010818   Richard Gooch <rgooch@atnf.csiro.au>
-               Updated major masks up to Linus' "no new majors" proclamation.
-               Block: were 126 now 122 free, char: were 26 now 19 free.
-    20020324   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bug in <devfs_alloc_unique_number>: was clearing beyond
-               bitfield.
-    20020326   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed bitfield data type for <devfs_*alloc_devnum>.
-               Made major bitfield type and initialiser 64 bit safe.
-    20020413   Richard Gooch <rgooch@atnf.csiro.au>
-               Fixed shift warning on 64 bit machines.
-    20020428   Richard Gooch <rgooch@atnf.csiro.au>
-               Copied and used macro for error messages from fs/devfs/base.c 
-    20021013   Richard Gooch <rgooch@atnf.csiro.au>
-               Documentation fix.
-    20030101   Adam J. Richter <adam@yggdrasil.com>
-               Eliminate DEVFS_SPECIAL_{CHR,BLK}.  Use mode_t instead.
-    20030106   Christoph Hellwig <hch@infradead.org>
-               Rewrite devfs_{,de}alloc_devnum to look like C code.
-*/
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/genhd.h>
-#include <linux/bitops.h>
-int devfs_register_tape(const char *name)
-{
-        char tname[32], dest[64];
-        static unsigned int tape_counter;
-        unsigned int n = tape_counter++;
-        sprintf(dest, "../%s", name);
-        sprintf(tname, "tapes/tape%u", n);
-        devfs_mk_symlink(tname, dest);
-        return n;
-}
-EXPORT_SYMBOL(devfs_register_tape);
-void devfs_unregister_tape(int num)
-{
-        if (num >= 0)
-                devfs_remove("tapes/tape%u", num);
-}
-EXPORT_SYMBOL(devfs_unregister_tape);
diff --git a/fs/exec.c b/fs/exec.c
index c8494f513eaf..8344ba73a2a6 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -22,7 +22,6 @@
 * formats. 
 */
-#include <linux/config.h>
 #include <linux/slab.h>
 #include <linux/file.h>
 #include <linux/mman.h>
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 433a213a8bd9..d4870432ecfc 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -11,7 +11,6 @@
 *        David S. Miller (davem@caip.rutgers.edu), 1995
 */
-#include <linux/config.h>
 #include "ext2.h"
 #include <linux/quotaops.h>
 #include <linux/sched.h>
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 308c252568c6..de85c61c58c5 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -12,7 +12,6 @@
 *        David S. Miller (davem@caip.rutgers.edu), 1995
 */
-#include <linux/config.h>
 #include <linux/quotaops.h>
 #include <linux/sched.h>
 #include <linux/backing-dev.h>
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index d4233b2e6436..9f43879d6d68 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -16,7 +16,6 @@
 *        David S. Miller (davem@caip.rutgers.edu), 1995
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/fs.h>
diff --git a/fs/ext2/xattr.h b/fs/ext2/xattr.h
index 67cfeb66e897..bf8175b2ced9 100644
--- a/fs/ext2/xattr.h
+++ b/fs/ext2/xattr.h
@@ -6,7 +6,6 @@
  (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
 */
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/xattr.h>
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index 96172e89ddc3..a504a40d6d29 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -11,7 +11,6 @@
 *        David S. Miller (davem@caip.rutgers.edu), 1995
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/capability.h>
 #include <linux/fs.h>
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index dfd811895d8f..5e1337fd878a 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -8,7 +8,6 @@
 * This could probably be made into a module, because it is not often in use.
 */
-#include <linux/config.h>
 #define EXT3FS_DEBUG
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index b7483360a2db..f2dd71336612 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -16,7 +16,6 @@
 *        David S. Miller (davem@caip.rutgers.edu), 1995
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/fs.h>
diff --git a/fs/ext3/xattr.h b/fs/ext3/xattr.h
index 2ceae38f3d49..6b1ae1c6182c 100644
--- a/fs/ext3/xattr.h
+++ b/fs/ext3/xattr.h
@@ -6,7 +6,6 @@
  (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
 */
-#include <linux/config.h>
 #include <linux/xattr.h>
 /* Magic value in attribute blocks */
diff --git a/fs/file_table.c b/fs/file_table.c
index 506d5307108d..0131ba06e1ee 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -5,7 +5,6 @@
 *  Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
 */
-#include <linux/config.h>
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/file.h>
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 031b27a4bc9a..892643dc9af1 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -464,8 +464,8 @@ void sync_inodes_sb(struct super_block *sb, int wait)
                .range_start    = 0,
                .range_end      = LLONG_MAX,
        };
-        unsigned long nr_dirty = read_page_state(nr_dirty);
+        unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
-        unsigned long nr_unstable = read_page_state(nr_unstable);
+        unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
        wbc.nr_to_write = nr_dirty + nr_unstable +
                        (inodes_stat.nr_inodes - inodes_stat.nr_unused) +
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index d9227bf14e86..34937ee83ab1 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -12,7 +12,6 @@
 * Based on the minix file system code, (C) 1991, 1992 by Linus Torvalds
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/blkdev.h>
 #include <linux/mount.h>
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 0a92fa2336a2..d279d5924f28 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -7,7 +7,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/pagemap.h>
diff --git a/fs/inode.c b/fs/inode.c
index f42961eb983b..0bf9f0444a96 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -4,7 +4,6 @@
 * (C) 1997 Linus Torvalds
 */
-#include <linux/config.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/dcache.h>
@@ -452,15 +451,14 @@ static void prune_icache(int nr_to_scan)
                nr_pruned++;
        }
        inodes_stat.nr_unused -= nr_pruned;
+        if (current_is_kswapd())
+                __count_vm_events(KSWAPD_INODESTEAL, reap);
+        else
+                __count_vm_events(PGINODESTEAL, reap);
        spin_unlock(&inode_lock);
        dispose_list(&freeable);
        mutex_unlock(&iprune_mutex);
-        if (current_is_kswapd())
-                mod_page_state(kswapd_inodesteal, reap);
-        else
-                mod_page_state(pginodesteal, reap);
 }
 /*
diff --git a/fs/ioctl.c b/fs/ioctl.c
index f8aeec3ca10c..4b7660b09ac0 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -4,7 +4,6 @@
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */
-#include <linux/config.h>
 #include <linux/syscalls.h>
 #include <linux/mm.h>
 #include <linux/smp_lock.h>
diff --git a/fs/ioprio.c b/fs/ioprio.c
index 7fa76ed53c10..93aa5715f224 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -125,11 +125,24 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
        return ret;
 }
+static int get_task_ioprio(struct task_struct *p)
+{
+        int ret;
+        ret = security_task_getioprio(p);
+        if (ret)
+                goto out;
+        ret = p->ioprio;
+out:
+        return ret;
+}
 asmlinkage long sys_ioprio_get(int which, int who)
 {
        struct task_struct *g, *p;
        struct user_struct *user;
        int ret = -ESRCH;
+        int tmpio;
        read_lock_irq(&tasklist_lock);
        switch (which) {
@@ -139,16 +152,19 @@ asmlinkage long sys_ioprio_get(int which, int who)
                        else
                                p = find_task_by_pid(who);
                        if (p)
-                                ret = p->ioprio;
+                                ret = get_task_ioprio(p);
                        break;
                case IOPRIO_WHO_PGRP:
                        if (!who)
                                who = process_group(current);
                        do_each_task_pid(who, PIDTYPE_PGID, p) {
+                                tmpio = get_task_ioprio(p);
+                                if (tmpio < 0)
+                                        continue;
                                if (ret == -ESRCH)
-                                        ret = p->ioprio;
+                                        ret = tmpio;
                                else
-                                        ret = ioprio_best(ret, p->ioprio);
+                                        ret = ioprio_best(ret, tmpio);
                        } while_each_task_pid(who, PIDTYPE_PGID, p);
                        break;
                case IOPRIO_WHO_USER:
@@ -163,10 +179,13 @@ asmlinkage long sys_ioprio_get(int which, int who)
                        do_each_thread(g, p) {
                                if (p->uid != user->uid)
                                        continue;
+                                tmpio = get_task_ioprio(p);
+                                if (tmpio < 0)
+                                        continue;
                                if (ret == -ESRCH)
-                                        ret = p->ioprio;
+                                        ret = tmpio;
                                else
-                                        ret = ioprio_best(ret, p->ioprio);
+                                        ret = ioprio_best(ret, tmpio);
                        } while_each_thread(g, p);
                        if (who)
diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c
index 3a39158cca96..731816332b12 100644
--- a/fs/isofs/compress.c
+++ b/fs/isofs/compress.c
@@ -16,7 +16,6 @@
 * Transparent decompression of files on an iso9660 filesystem
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c
index 5440ea292c69..27e276987fd2 100644
--- a/fs/isofs/dir.c
+++ b/fs/isofs/dir.c
@@ -10,7 +10,6 @@
 * 
 *  isofs directory handling functions
 */
-#include <linux/config.h>
 #include <linux/smp_lock.h>
 #include "isofs.h"
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index bb11c7fb4019..14391361c886 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -11,7 +11,6 @@
 *      2004  Paul Serice - NFS Export Operations
 */
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/module.h>
diff --git a/fs/jffs/intrep.c b/fs/jffs/intrep.c
index 5371a403130a..9000f1effedf 100644
--- a/fs/jffs/intrep.c
+++ b/fs/jffs/intrep.c
@@ -55,7 +55,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/jffs.h>
diff --git a/fs/jffs/jffs_fm.h b/fs/jffs/jffs_fm.h
index c794d923df2a..9ee6ad29eff5 100644
--- a/fs/jffs/jffs_fm.h
+++ b/fs/jffs/jffs_fm.h
@@ -20,7 +20,6 @@
 #ifndef __LINUX_JFFS_FM_H__
 #define __LINUX_JFFS_FM_H__
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/jffs.h>
 #include <linux/mtd/mtd.h>
diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
index 5c63e0cdcf4c..3681d0728ac7 100644
--- a/fs/jffs2/compr_zlib.c
+++ b/fs/jffs2/compr_zlib.c
@@ -15,7 +15,6 @@
 #error "The userspace support got too messy and was removed. Update your mkfs.jffs2"
 #endif
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
diff --git a/fs/jffs2/debug.h b/fs/jffs2/debug.h
index 5fa494a792b2..3daf3bca0376 100644
--- a/fs/jffs2/debug.h
+++ b/fs/jffs2/debug.h
@@ -13,7 +13,6 @@
 #ifndef _JFFS2_DEBUG_H_
 #define _JFFS2_DEBUG_H_
-#include <linux/config.h>
 #ifndef CONFIG_JFFS2_FS_DEBUG
 #define CONFIG_JFFS2_FS_DEBUG 0
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 97caa77d60cf..4780f82825d6 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -12,7 +12,6 @@
 */
 #include <linux/capability.h>
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/fs.h>
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index b16c60bbcf6e..f752baa8d399 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -14,7 +14,6 @@
 #ifndef __JFFS2_NODELIST_H__
 #define __JFFS2_NODELIST_H__
-#include <linux/config.h>
 #include <linux/fs.h>
 #include <linux/types.h>
 #include <linux/jffs2.h>
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 2378a662c256..68e3953419b4 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -11,7 +11,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index ac3d66948e8c..10c46231ce15 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -842,7 +842,7 @@ struct tlock *txLock(tid_t tid, struct inode *ip, struct metapage * mp,
        TXN_UNLOCK();
        release_metapage(mp);
        TXN_LOCK();
-        xtid = tlck->tid;       /* reaquire after dropping TXN_LOCK */
+        xtid = tlck->tid;       /* reacquire after dropping TXN_LOCK */
        jfs_info("txLock: in waitLock, tid = %d, xtid = %d, lid = %d",
                 tid, xtid, lid);
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 73d2aba084c6..4f6cfebc82db 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -18,7 +18,6 @@
 */
 #include <linux/fs.h>
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/parser.h>
 #include <linux/completion.h>
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 4db62098d3f4..5980c45998cc 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -6,7 +6,6 @@
 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/errno.h>
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index fd56c8872f34..9a991b52c647 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -12,7 +12,6 @@
 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/sysctl.h>
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 3ef739120dff..baf5ae513481 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -20,7 +20,6 @@
 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index d210cf304e92..dbb66a3b5cd9 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -7,7 +7,6 @@
 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/time.h>
 #include <linux/slab.h>
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index a570e5c8a930..2a4df9b3779a 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -6,7 +6,6 @@
 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/time.h>
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index f22a3764461a..033ea4ac2c30 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -6,7 +6,6 @@
 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/utsname.h>
diff --git a/fs/namespace.c b/fs/namespace.c
index b3ed212ea416..fa7ed6a9fc2d 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -8,7 +8,6 @@
 * Heavily rewritten.
 */
-#include <linux/config.h>
 #include <linux/syscalls.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index f0860c602d8b..b4ee89250e95 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -10,7 +10,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/errno.h>
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 6c51c1198464..1ddf77b0b825 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -9,7 +9,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <asm/system.h>
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index eb3813ad136f..42039fe0653c 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -7,7 +7,6 @@
 *
 */
-#include <linux/config.h>
 #include <asm/uaccess.h>
 #include <linux/capability.h>
diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c
index 52d60c3d8996..e7d5a3097fe6 100644
--- a/fs/ncpfs/mmap.c
+++ b/fs/ncpfs/mmap.c
@@ -93,7 +93,7 @@ static struct page* ncp_file_mmap_nopage(struct vm_area_struct *area,
         */
        if (type)
                *type = VM_FAULT_MAJOR;
-        inc_page_state(pgmajfault);
+        count_vm_event(PGMAJFAULT);
        return page;
 }
diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c
index d9ebf6439f59..551e0bac7aac 100644
--- a/fs/ncpfs/ncplib_kernel.c
+++ b/fs/ncpfs/ncplib_kernel.c
@@ -10,7 +10,6 @@
 */
-#include <linux/config.h>
 #include "ncplib_kernel.h"
diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h
index 799e5c2bec55..2441d1ab57dc 100644
--- a/fs/ncpfs/ncplib_kernel.h
+++ b/fs/ncpfs/ncplib_kernel.h
@@ -12,7 +12,6 @@
 #ifndef _NCPLIB_H
 #define _NCPLIB_H
-#include <linux/config.h>
 #include <linux/fs.h>
 #include <linux/types.h>
diff --git a/fs/ncpfs/ncpsign_kernel.c b/fs/ncpfs/ncpsign_kernel.c
index a6ec90cd8894..749a18d33599 100644
--- a/fs/ncpfs/ncpsign_kernel.c
+++ b/fs/ncpfs/ncpsign_kernel.c
@@ -5,7 +5,6 @@
 *
 */
-#include <linux/config.h>
 #ifdef CONFIG_NCPFS_PACKET_SIGNING
diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c
index 8783eb7ec641..11c2b252ebed 100644
--- a/fs/ncpfs/sock.c
+++ b/fs/ncpfs/sock.c
@@ -8,7 +8,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/errno.h>
diff --git a/fs/ncpfs/symlink.c b/fs/ncpfs/symlink.c
index f76b1392a012..ca92c2406635 100644
--- a/fs/ncpfs/symlink.c
+++ b/fs/ncpfs/symlink.c
@@ -20,7 +20,6 @@
 *
 */
-#include <linux/config.h>
 #include <asm/uaccess.h>
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index d53f8c6a9ecb..fe0a6b8ac149 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -6,7 +6,6 @@
 * NFSv4 callback handling
 */
-#include <linux/config.h>
 #include <linux/completion.h>
 #include <linux/ip.h>
 #include <linux/module.h>
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 462cfceb50c5..7719483ecdfc 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -5,7 +5,6 @@
 *
 * NFSv4 callback procedures
 */
-#include <linux/config.h>
 #include <linux/nfs4.h>
 #include <linux/nfs_fs.h>
 #include "nfs4_fs.h"
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index c92991328d9a..29f932192054 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -5,7 +5,6 @@
 *
 * NFSv4 callback encode/decode procedures
 */
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/nfs4.h>
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index d3be923d4e43..9540a316c05e 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -6,7 +6,6 @@
 * NFS file delegation management
 *
 */
-#include <linux/config.h>
 #include <linux/completion.h>
 #include <linux/kthread.h>
 #include <linux/module.h>
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 9ae7b6f6bf30..fecd3b095deb 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -38,7 +38,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index c5b916605fb0..d349fb2245da 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -13,7 +13,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 4fe51c1292bb..e4f4e5def0fc 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -81,9 +81,9 @@ extern struct file_system_type clone_nfs_fs_type;
 #ifdef CONFIG_NFS_V4
 extern struct file_system_type clone_nfs4_fs_type;
 #endif
-#ifdef CONFIG_PROC_FS
 extern struct rpc_stat nfs_rpcstat;
-#endif
 extern int __init register_nfs_fs(void);
 extern void __exit unregister_nfs_fs(void);
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 96e5b82c153b..090a36b07a22 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -38,7 +38,6 @@
 * subsequent patch.
 */
-#include <linux/config.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/nfs_fs.h>
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index d89f6fb3b3a3..36e902a88ca1 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -9,7 +9,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/slab.h>
 #include <linux/file.h>
 #include <linux/sunrpc/clnt.h>
@@ -315,6 +314,7 @@ nfs_scan_lock_dirty(struct nfs_inode *nfsi, struct list_head *dst,
                                                req->wb_index, NFS_PAGE_TAG_DIRTY);
                                nfs_list_remove_request(req);
                                nfs_list_add_request(req, dst);
+                                dec_zone_page_state(req->wb_page, NR_FILE_DIRTY);
                                res++;
                        }
                }
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 32cf3773af0c..52bf634260a1 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -15,7 +15,6 @@
 * within the RPC code when root squashing is suspected.
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c
index db61e51bb154..2fe3403c2409 100644
--- a/fs/nfs/sysctl.c
+++ b/fs/nfs/sysctl.c
@@ -3,7 +3,6 @@
 *
 * Sysctl interface to NFS parameters
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/linkage.h>
 #include <linux/ctype.h>
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 8fccb9cb173b..bca5734ca9fb 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -46,7 +46,6 @@
 * Copyright (C) 1996, 1997, Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/mm.h>
@@ -497,7 +496,7 @@ nfs_mark_request_dirty(struct nfs_page *req)
        nfs_list_add_request(req, &nfsi->dirty);
        nfsi->ndirty++;
        spin_unlock(&nfsi->req_lock);
-        inc_page_state(nr_dirty);
+        inc_zone_page_state(req->wb_page, NR_FILE_DIRTY);
        mark_inode_dirty(inode);
 }
@@ -525,7 +524,7 @@ nfs_mark_request_commit(struct nfs_page *req)
        nfs_list_add_request(req, &nfsi->commit);
        nfsi->ncommit++;
        spin_unlock(&nfsi->req_lock);
-        inc_page_state(nr_unstable);
+        inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
        mark_inode_dirty(inode);
 }
 #endif
@@ -609,7 +608,6 @@ nfs_scan_dirty(struct inode *inode, struct list_head *dst, unsigned long idx_sta
        if (nfsi->ndirty != 0) {
                res = nfs_scan_lock_dirty(nfsi, dst, idx_start, npages);
                nfsi->ndirty -= res;
-                sub_page_state(nr_dirty,res);
                if ((nfsi->ndirty == 0) != list_empty(&nfsi->dirty))
                        printk(KERN_ERR "NFS: desynchronized value of nfs_i.ndirty.\n");
        }
@@ -1394,7 +1392,6 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
 {
        struct nfs_write_data   *data = calldata;
        struct nfs_page         *req;
-        int res = 0;
        dprintk("NFS: %4d nfs_commit_done (status %d)\n",
                                task->tk_pid, task->tk_status);
@@ -1406,6 +1403,7 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
        while (!list_empty(&data->pages)) {
                req = nfs_list_entry(data->pages.next);
                nfs_list_remove_request(req);
+                dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
                dprintk("NFS: commit (%s/%Ld %d@%Ld)",
                        req->wb_context->dentry->d_inode->i_sb->s_id,
@@ -1432,9 +1430,7 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
                nfs_mark_request_dirty(req);
        next:
                nfs_clear_page_writeback(req);
-                res++;
        }
-        sub_page_state(nr_unstable,res);
 }
 static const struct rpc_call_ops nfs_commit_ops = {
diff --git a/fs/nfsctl.c b/fs/nfsctl.c
index a5a18d4aca40..c043136a82ca 100644
--- a/fs/nfsctl.c
+++ b/fs/nfsctl.c
@@ -4,7 +4,6 @@
 *      This should eventually move to userland.
 *
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/file.h>
 #include <linux/fs.h>
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 3eec30000f3f..01bc68c628ad 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -126,7 +126,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
        if (*ep)
                goto out;
        dprintk("found fsidtype %d\n", fsidtype);
-        if (fsidtype > 2)
+        if (key_len(fsidtype)==0) /* invalid type */
                goto out;
        if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
                goto out;
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index dbaf3f93f328..54b37b1d2e3a 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -33,7 +33,6 @@
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/list.h>
 #include <linux/inet.h>
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index 4b6aa60dfceb..bea6b9478114 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -34,7 +34,6 @@
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7c7d01672d35..9daa0b9feb8d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1237,8 +1237,15 @@ find_file(struct inode *ino)
        return NULL;
 }
-#define TEST_ACCESS(x) ((x > 0 || x < 4)?1:0)
+static int access_valid(u32 x)
-#define TEST_DENY(x) ((x >= 0 || x < 5)?1:0)
+{
+        return (x > 0 && x < 4);
+}
+static int deny_valid(u32 x)
+{
+        return (x >= 0 && x < 5);
+}
 static void
 set_access(unsigned int *access, unsigned long bmap) {
@@ -1745,7 +1752,8 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
        int status;
        status = nfserr_inval;
-        if (!TEST_ACCESS(open->op_share_access) || !TEST_DENY(open->op_share_deny))
+        if (!access_valid(open->op_share_access)
+                        || !deny_valid(open->op_share_deny))
                goto out;
        /*
         * Lookup file; if found, lookup stateid and check open request,
@@ -1782,10 +1790,10 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
        } else {
                /* Stateid was not found, this is a new OPEN */
                int flags = 0;
+                if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
+                        flags |= MAY_READ;
                if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
-                        flags = MAY_WRITE;
+                        flags |= MAY_WRITE;
-                else
-                        flags = MAY_READ;
                status = nfs4_new_open(rqstp, &stp, dp, current_fh, flags);
                if (status)
                        goto out;
@@ -2070,16 +2078,12 @@ nfs4_preprocess_stateid_op(struct svc_fh *current_fh, stateid_t *stateid, int fl
        if (!stateid->si_fileid) { /* delegation stateid */
                if(!(dp = find_delegation_stateid(ino, stateid))) {
                        dprintk("NFSD: delegation stateid not found\n");
-                        if (nfs4_in_grace())
-                                status = nfserr_grace;
                        goto out;
                }
                stidp = &dp->dl_stateid;
        } else { /* open or lock stateid */
                if (!(stp = find_stateid(stateid, flags))) {
                        dprintk("NFSD: open or lock stateid not found\n");
-                        if (nfs4_in_grace())
-                                status = nfserr_grace;
                        goto out;
                }
                if ((flags & CHECK_FH) && nfs4_check_fh(current_fh, stp))
@@ -2252,8 +2256,9 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfs
                        (int)current_fh->fh_dentry->d_name.len,
                        current_fh->fh_dentry->d_name.name);
-        if ((status = fh_verify(rqstp, current_fh, S_IFREG, 0)))
+        status = fh_verify(rqstp, current_fh, S_IFREG, 0);
-                goto out;
+        if (status)
+                return status;
        nfs4_lock_state();
@@ -2320,7 +2325,8 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct n
                        (int)current_fh->fh_dentry->d_name.len,
                        current_fh->fh_dentry->d_name.name);
-        if (!TEST_ACCESS(od->od_share_access) || !TEST_DENY(od->od_share_deny))
+        if (!access_valid(od->od_share_access)
+                        || !deny_valid(od->od_share_deny))
                return nfserr_inval;
        nfs4_lock_state();
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index a1810e6a93e5..7046ac9cf97f 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -6,7 +6,6 @@
 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/linkage.h>
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 3f2ec2e6d06c..ecc439d2565f 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -187,13 +187,6 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
                        goto out;
                }
-                /* Set user creds for this exportpoint */
-                error = nfsd_setuser(rqstp, exp);
-                if (error) {
-                        error = nfserrno(error);
-                        goto out;
-                }
                /*
                 * Look up the dentry using the NFS file handle.
                 */
@@ -251,6 +244,14 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
        }
        cache_get(&exp->h);
+        /* Set user creds for this exportpoint; necessary even in the "just
+         * checking" case because this may be a filehandle that was created by
+         * fh_compose, and that is about to be used in another nfsv4 compound
+         * operation */
+        error = nfserrno(nfsd_setuser(rqstp, exp));
+        if (error)
+                goto out;
        error = nfsd_mode_check(rqstp, dentry->d_inode->i_mode, type);
        if (error)
                goto out;
@@ -312,8 +313,8 @@ int
 fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, struct svc_fh *ref_fh)
 {
        /* ref_fh is a reference file handle.
-         * if it is non-null, then we should compose a filehandle which is
+         * if it is non-null and for the same filesystem, then we should compose
-         * of the same version, where possible.
+         * a filehandle which is of the same version, where possible.
         * Currently, that means that if ref_fh->fh_handle.fh_version == 0xca
         * Then create a 32byte filehandle using nfs_fhbase_old
         *
@@ -332,7 +333,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, st
                parent->d_name.name, dentry->d_name.name,
                (inode ? inode->i_ino : 0));
-        if (ref_fh) {
+        if (ref_fh && ref_fh->fh_export == exp) {
                ref_fh_version = ref_fh->fh_handle.fh_version;
                if (ref_fh_version == 0xca)
                        ref_fh_fsid_type = 0;
@@ -461,7 +462,7 @@ fh_update(struct svc_fh *fhp)
        } else {
                int size;
                if (fhp->fh_handle.fh_fileid_type != 0)
-                        goto out_uptodate;
+                        goto out;
                datap = fhp->fh_handle.fh_auth+
                        fhp->fh_handle.fh_size/4 -1;
                size = (fhp->fh_maxsize - fhp->fh_handle.fh_size)/4;
@@ -481,10 +482,6 @@ out_negative:
        printk(KERN_ERR "fh_update: %s/%s still negative!\n",
                dentry->d_parent->d_name.name, dentry->d_name.name);
        goto out;
-out_uptodate:
-        printk(KERN_ERR "fh_update: %s/%s already up-to-date!\n",
-                dentry->d_parent->d_name.name, dentry->d_name.name);
-        goto out;
 }
 /*
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 3790727e5dfd..ec1decf29bab 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -8,7 +8,6 @@
 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/time.h>
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 245eaa1fb59b..c9e3b5a8fe07 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -16,7 +16,6 @@
 * Zerocpy NFS support (C) 2002 Hirokazu Takahashi <taka@valinux.co.jp>
 */
-#include <linux/config.h>
 #include <linux/string.h>
 #include <linux/time.h>
 #include <linux/errno.h>
@@ -673,7 +672,10 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
                goto out_nfserr;
        if (access & MAY_WRITE) {
-                flags = O_WRONLY|O_LARGEFILE;
+                if (access & MAY_READ)
+                        flags = O_RDWR|O_LARGEFILE;
+                else
+                        flags = O_WRONLY|O_LARGEFILE;
                DQUOT_INIT(inode);
        }
@@ -834,7 +836,7 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
        if (ra && ra->p_set)
                file->f_ra = ra->p_ra;
-        if (file->f_op->sendfile) {
+        if (file->f_op->sendfile && rqstp->rq_sendfile_ok) {
                svc_pushback_unused_pages(rqstp);
                err = file->f_op->sendfile(file, &offset, *count,
                                                 nfsd_read_actor, rqstp);
@@ -1517,14 +1519,15 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
                        err = nfserrno(err);
        }
-        fh_unlock(ffhp);
        dput(dnew);
+out_unlock:
+        fh_unlock(ffhp);
 out:
        return err;
 out_nfserr:
        err = nfserrno(err);
-        goto out;
+        goto out_unlock;
 }
 /*
@@ -1553,7 +1556,7 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
        tdir = tdentry->d_inode;
        err = (rqstp->rq_vers == 2) ? nfserr_acces : nfserr_xdev;
-        if (fdir->i_sb != tdir->i_sb)
+        if (ffhp->fh_export != tfhp->fh_export)
                goto out;
        err = nfserr_perm;
diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c
index a912debcd20b..9de6b495f112 100644
--- a/fs/nls/nls_base.c
+++ b/fs/nls/nls_base.c
@@ -10,7 +10,6 @@
 #include <linux/module.h>
 #include <linux/string.h>
-#include <linux/config.h>
 #include <linux/nls.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
diff --git a/fs/ntfs/sysctl.h b/fs/ntfs/sysctl.h
index c8064cae8f17..beda5bf96405 100644
--- a/fs/ntfs/sysctl.h
+++ b/fs/ntfs/sysctl.h
@@ -24,7 +24,6 @@
 #ifndef _LINUX_NTFS_SYSCTL_H
 #define _LINUX_NTFS_SYSCTL_H
-#include <linux/config.h>
 #if defined(DEBUG) && defined(CONFIG_SYSCTL)
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index cca71317b6d6..f1d1c342ce01 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -558,16 +558,9 @@ static int ocfs2_direct_IO_get_blocks(struct inode *inode, sector_t iblock,
        u64 vbo_max; /* file offset, max_blocks from iblock */
        u64 p_blkno;
        int contig_blocks;
-        unsigned char blocksize_bits;
+        unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
        unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
-        if (!inode || !bh_result) {
-                mlog(ML_ERROR, "inode or bh_result is null\n");
-                return -EIO;
-        }
-        blocksize_bits = inode->i_sb->s_blocksize_bits;
        /* This function won't even be called if the request isn't all
         * nicely aligned and of the right size, so there's no need
         * for us to check any of that. */
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 1d26cfcd9f84..504595d6cf65 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -517,6 +517,7 @@ static inline void o2hb_prepare_block(struct o2hb_region *reg,
        hb_block->hb_seq = cpu_to_le64(cputime);
        hb_block->hb_node = node_num;
        hb_block->hb_generation = cpu_to_le64(generation);
+        hb_block->hb_dead_ms = cpu_to_le32(o2hb_dead_threshold * O2HB_REGION_TIMEOUT_MS);
        /* This step must always happen last! */
        hb_block->hb_cksum = cpu_to_le32(o2hb_compute_block_crc_le(reg,
@@ -645,6 +646,8 @@ static int o2hb_check_slot(struct o2hb_region *reg,
        struct o2nm_node *node;
        struct o2hb_disk_heartbeat_block *hb_block = reg->hr_tmp_block;
        u64 cputime;
+        unsigned int dead_ms = o2hb_dead_threshold * O2HB_REGION_TIMEOUT_MS;
+        unsigned int slot_dead_ms;
        memcpy(hb_block, slot->ds_raw_block, reg->hr_block_bytes);
@@ -733,6 +736,23 @@ fire_callbacks:
                              &o2hb_live_slots[slot->ds_node_num]);
                slot->ds_equal_samples = 0;
+                /* We want to be sure that all nodes agree on the
+                 * number of milliseconds before a node will be
+                 * considered dead. The self-fencing timeout is
+                 * computed from this value, and a discrepancy might
+                 * result in heartbeat calling a node dead when it
+                 * hasn't self-fenced yet. */
+                slot_dead_ms = le32_to_cpu(hb_block->hb_dead_ms);
+                if (slot_dead_ms && slot_dead_ms != dead_ms) {
+                        /* TODO: Perhaps we can fail the region here. */
+                        mlog(ML_ERROR, "Node %d on device %s has a dead count "
+                             "of %u ms, but our count is %u ms.\n"
+                             "Please double check your configuration values "
+                             "for 'O2CB_HEARTBEAT_THRESHOLD'\n",
+                             slot->ds_node_num, reg->hr_dev_name, slot_dead_ms,
+                             dead_ms);
+                }
                goto out;
        }
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index 73edad782537..a42628ba9ddf 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -123,6 +123,17 @@
 #define MLOG_MASK_PREFIX 0
 #endif
+/*
+ * When logging is disabled, force the bit test to 0 for anything other
+ * than errors and notices, allowing gcc to remove the code completely.
+ * When enabled, allow all masks.
+ */
+#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
+#define ML_ALLOWED_BITS ~0
+#else
+#define ML_ALLOWED_BITS (ML_ERROR|ML_NOTICE)
+#endif
 #define MLOG_MAX_BITS 64
 struct mlog_bits {
@@ -187,7 +198,8 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
 #define mlog(mask, fmt, args...) do {                                   \
        u64 __m = MLOG_MASK_PREFIX | (mask);                            \
-        if (__mlog_test_u64(__m, mlog_and_bits) &&                      \
+        if ((__m & ML_ALLOWED_BITS) &&                                  \
+            __mlog_test_u64(__m, mlog_and_bits) &&                      \
            !__mlog_test_u64(__m, mlog_not_bits)) {                     \
                if (__m & ML_ERROR)                                     \
                        __mlog_printk(KERN_ERR, "ERROR: "fmt , ##args); \
@@ -204,6 +216,7 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
                mlog(ML_ERROR, "status = %lld\n", (long long)_st);      \
 } while (0)
+#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
 #define mlog_entry(fmt, args...) do {                                   \
        mlog(ML_ENTRY, "ENTRY:" fmt , ##args);                          \
 } while (0)
@@ -247,6 +260,13 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
 #define mlog_exit_void() do {                                           \
        mlog(ML_EXIT, "EXIT\n");                                        \
 } while (0)
+#else
+#define mlog_entry(...)  do { } while (0)
+#define mlog_entry_void(...)  do { } while (0)
+#define mlog_exit(...)  do { } while (0)
+#define mlog_exit_ptr(...)  do { } while (0)
+#define mlog_exit_void(...)  do { } while (0)
+#endif  /* defined(CONFIG_OCFS2_DEBUG_MASKLOG) */
 #define mlog_bug_on_msg(cond, fmt, args...) do {                        \
        if (cond) {                                                     \
diff --git a/fs/ocfs2/cluster/ocfs2_heartbeat.h b/fs/ocfs2/cluster/ocfs2_heartbeat.h
index 94096069cb43..3f4151da9709 100644
--- a/fs/ocfs2/cluster/ocfs2_heartbeat.h
+++ b/fs/ocfs2/cluster/ocfs2_heartbeat.h
@@ -32,6 +32,7 @@ struct o2hb_disk_heartbeat_block {
        __u8  hb_pad1[3];
        __le32 hb_cksum;
        __le64 hb_generation;
+        __le32 hb_dead_ms;
 };
 #endif /* _OCFS2_HEARTBEAT_H */
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 1591eb37a723..b650efa8c8be 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -396,8 +396,8 @@ static void o2net_set_nn_state(struct o2net_node *nn,
        }
        if (was_valid && !valid) {
-                mlog(ML_NOTICE, "no longer connected to " SC_NODEF_FMT "\n",
+                printk(KERN_INFO "o2net: no longer connected to "
-                     SC_NODEF_ARGS(old_sc));
+                       SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc));
                o2net_complete_nodes_nsw(nn);
        }
@@ -409,10 +409,10 @@ static void o2net_set_nn_state(struct o2net_node *nn,
                 * the only way to start connecting again is to down
                 * heartbeat and bring it back up. */
                cancel_delayed_work(&nn->nn_connect_expired);
-                mlog(ML_NOTICE, "%s " SC_NODEF_FMT "\n", 
+                printk(KERN_INFO "o2net: %s " SC_NODEF_FMT "\n",
-                     o2nm_this_node() > sc->sc_node->nd_num ?
+                       o2nm_this_node() > sc->sc_node->nd_num ?
-                        "connected to" : "accepted connection from",
+                                "connected to" : "accepted connection from",
-                     SC_NODEF_ARGS(sc));
+                       SC_NODEF_ARGS(sc));
        }
        /* trigger the connecting worker func as long as we're not valid,
@@ -1280,7 +1280,7 @@ static void o2net_idle_timer(unsigned long data)
        do_gettimeofday(&now);
-        mlog(ML_NOTICE, "connection to " SC_NODEF_FMT " has been idle for 10 "
+        printk(KERN_INFO "o2net: connection to " SC_NODEF_FMT " has been idle for 10 "
             "seconds, shutting it down.\n", SC_NODEF_ARGS(sc));
        mlog(ML_NOTICE, "here are some times that might help debug the "
             "situation: (tmr %ld.%ld now %ld.%ld dr %ld.%ld adv "
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index ae47f450792f..3d494d1a5f36 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -213,11 +213,9 @@ int ocfs2_find_files_on_disk(const char *name,
                             struct ocfs2_dir_entry **dirent)
 {
        int status = -ENOENT;
-        struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
-        mlog_entry("(osb=%p, parent=%llu, name='%.*s', blkno=%p, inode=%p)\n",
+        mlog_entry("(name=%.*s, blkno=%p, inode=%p, dirent_bh=%p, dirent=%p)\n",
-                   osb, (unsigned long long)OCFS2_I(inode)->ip_blkno,
+                   namelen, name, blkno, inode, dirent_bh, dirent);
-                   namelen, name, blkno, inode);
        *dirent_bh = ocfs2_find_entry(name, namelen, inode, dirent);
        if (!*dirent_bh || !*dirent) {
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 9bdc9cf65991..14530ee7e11d 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -822,8 +822,6 @@ int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data);
 int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data);
 int dlm_do_master_requery(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
                          u8 nodenum, u8 *real_master);
-int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
-                               struct dlm_lock_resource *res, u8 *real_master);
 int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index b8c23f7ba67e..8d1065f8b3bd 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -408,12 +408,13 @@ static void __dlm_print_nodes(struct dlm_ctxt *dlm)
        assert_spin_locked(&dlm->spinlock);
-        mlog(ML_NOTICE, "Nodes in my domain (\"%s\"):\n", dlm->name);
+        printk(KERN_INFO "ocfs2_dlm: Nodes in domain (\"%s\"): ", dlm->name);
        while ((node = find_next_bit(dlm->domain_map, O2NM_MAX_NODES,
                                     node + 1)) < O2NM_MAX_NODES) {
-                mlog(ML_NOTICE, " node %d\n", node);
+                printk("%d ", node);
        }
+        printk("\n");
 }
 static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data)
@@ -429,7 +430,7 @@ static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data)
        node = exit_msg->node_idx;
-        mlog(0, "Node %u leaves domain %s\n", node, dlm->name);
+        printk(KERN_INFO "ocfs2_dlm: Node %u leaves domain %s\n", node, dlm->name);
        spin_lock(&dlm->spinlock);
        clear_bit(node, dlm->domain_map);
@@ -678,6 +679,8 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data)
                set_bit(assert->node_idx, dlm->domain_map);
                __dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);
+                printk(KERN_INFO "ocfs2_dlm: Node %u joins domain %s\n",
+                       assert->node_idx, dlm->name);
                __dlm_print_nodes(dlm);
                /* notify anything attached to the heartbeat events */
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 29b2845f370d..594745fab0b5 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -95,6 +95,9 @@ static void dlm_reco_unlock_ast(void *astdata, enum dlm_status st);
 static void dlm_request_all_locks_worker(struct dlm_work_item *item,
                                         void *data);
 static void dlm_mig_lockres_worker(struct dlm_work_item *item, void *data);
+static int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
+                                      struct dlm_lock_resource *res,
+                                      u8 *real_master);
 static u64 dlm_get_next_mig_cookie(void);
@@ -1484,8 +1487,9 @@ leave:
-int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
+static int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
-                               struct dlm_lock_resource *res, u8 *real_master)
+                                      struct dlm_lock_resource *res,
+                                      u8 *real_master)
 {
        struct dlm_node_iter iter;
        int nodenum;
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 4acd37286bdd..762eb1fbb34d 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -2071,8 +2071,7 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
        }
        /* launch vote thread */
-        osb->vote_task = kthread_run(ocfs2_vote_thread, osb, "ocfs2vote-%d",
+        osb->vote_task = kthread_run(ocfs2_vote_thread, osb, "ocfs2vote");
-                                     osb->osb_id);
        if (IS_ERR(osb->vote_task)) {
                status = PTR_ERR(osb->vote_task);
                osb->vote_task = NULL;
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 1a5c69071df6..fcd4475d1f89 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -298,7 +298,7 @@ static int ocfs2_extent_map_find_leaf(struct inode *inode,
                ret = ocfs2_extent_map_insert(inode, rec,
                                              le16_to_cpu(el->l_tree_depth));
-                if (ret) {
+                if (ret && (ret != -EEXIST)) {
                        mlog_errno(ret);
                        goto out_free;
                }
@@ -427,6 +427,11 @@ static int ocfs2_extent_map_insert_entry(struct ocfs2_extent_map *em,
 /*
 * Simple rule: on any return code other than -EAGAIN, anything left
 * in the insert_context will be freed.
+ *
+ * Simple rule #2: A return code of -EEXIST from this function or
+ * its calls to ocfs2_extent_map_insert_entry() signifies that another
+ * thread beat us to the insert.  It is not an actual error, but it
+ * tells the caller we have no more work to do.
 */
 static int ocfs2_extent_map_try_insert(struct inode *inode,
                                       struct ocfs2_extent_rec *rec,
@@ -448,22 +453,32 @@ static int ocfs2_extent_map_try_insert(struct inode *inode,
                goto out_unlock;
        }
+        /* Since insert_entry failed, the map MUST have old_ent */
        old_ent = ocfs2_extent_map_lookup(em, le32_to_cpu(rec->e_cpos),
-                                          le32_to_cpu(rec->e_clusters), NULL,
+                                          le32_to_cpu(rec->e_clusters),
-                                          NULL);
+                                          NULL, NULL);
        BUG_ON(!old_ent);
-        ret = -EEXIST;
+        if (old_ent->e_tree_depth < tree_depth) {
-        if (old_ent->e_tree_depth < tree_depth)
+                /* Another thread beat us to the lower tree_depth */
+                ret = -EEXIST;
                goto out_unlock;
+        }
        if (old_ent->e_tree_depth == tree_depth) {
+                /*
+                 * Another thread beat us to this tree_depth.
+                 * Let's make sure we agree with that thread (the
+                 * extent_rec should be identical).
+                 */
                if (!memcmp(rec, &old_ent->e_rec,
                            sizeof(struct ocfs2_extent_rec)))
                        ret = 0;
+                else
+                        /* FIXME: Should this be ESRCH/EBADR??? */
+                        ret = -EEXIST;
-                /* FIXME: Should this be ESRCH/EBADR??? */
                goto out_unlock;
        }
@@ -599,7 +614,7 @@ static int ocfs2_extent_map_insert(struct inode *inode,
                                                  tree_depth, &ctxt);
        } while (ret == -EAGAIN);
-        if (ret < 0)
+        if ((ret < 0) && (ret != -EEXIST))
                mlog_errno(ret);
        if (ctxt.left_ent)
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 910a601b2e98..f92bf1dd379a 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -784,8 +784,7 @@ int ocfs2_journal_load(struct ocfs2_journal *journal)
        }
        /* Launch the commit thread */
-        osb->commit_task = kthread_run(ocfs2_commit_thread, osb, "ocfs2cmt-%d",
+        osb->commit_task = kthread_run(ocfs2_commit_thread, osb, "ocfs2cmt");
-                                       osb->osb_id);
        if (IS_ERR(osb->commit_task)) {
                status = PTR_ERR(osb->commit_task);
                osb->commit_task = NULL;
@@ -1118,7 +1117,7 @@ void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
                goto out;
        osb->recovery_thread_task =  kthread_run(__ocfs2_recovery_thread, osb,
-                                                 "ocfs2rec-%d", osb->osb_id);
+                                                 "ocfs2rec");
        if (IS_ERR(osb->recovery_thread_task)) {
                mlog_errno((int)PTR_ERR(osb->recovery_thread_task));
                osb->recovery_thread_task = NULL;
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index 843cf9ddefe8..83934e33e5b0 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -46,12 +46,12 @@ static struct page *ocfs2_nopage(struct vm_area_struct * area,
                                 unsigned long address,
                                 int *type)
 {
-        struct inode *inode = area->vm_file->f_dentry->d_inode;
        struct page *page = NOPAGE_SIGBUS;
        sigset_t blocked, oldset;
        int ret;
-        mlog_entry("(inode %lu, address %lu)\n", inode->i_ino, address);
+        mlog_entry("(area=%p, address=%lu, type=%p)\n", area, address,
+                   type);
        /* The best way to deal with signals in this path is
         * to block them upfront, rather than allowing the
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index da1093039c01..cd4a6f253d13 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -184,7 +184,6 @@ struct ocfs2_journal;
 struct ocfs2_journal_handle;
 struct ocfs2_super
 {
-        u32 osb_id;             /* id used by the proc interface */
        struct task_struct *commit_task;
        struct super_block *sb;
        struct inode *root_inode;
@@ -222,13 +221,11 @@ struct ocfs2_super
        unsigned long s_mount_opt;
        u16 max_slots;
-        u16 num_nodes;
        s16 node_num;
        s16 slot_num;
        int s_sectsize_bits;
        int s_clustersize;
        int s_clustersize_bits;
-        struct proc_dir_entry *proc_sub_dir; /* points to /proc/fs/ocfs2/<maj_min> */
        atomic_t vol_state;
        struct mutex recovery_lock;
@@ -294,7 +291,6 @@ struct ocfs2_super
 };
 #define OCFS2_SB(sb)        ((struct ocfs2_super *)(sb)->s_fs_info)
-#define OCFS2_MAX_OSB_ID             65536
 static inline int ocfs2_should_order_data(struct inode *inode)
 {
diff --git a/fs/ocfs2/slot_map.c b/fs/ocfs2/slot_map.c
index 871627961d6d..aa6f5aadedc4 100644
--- a/fs/ocfs2/slot_map.c
+++ b/fs/ocfs2/slot_map.c
@@ -264,7 +264,7 @@ int ocfs2_find_slot(struct ocfs2_super *osb)
        osb->slot_num = slot;
        spin_unlock(&si->si_lock);
-        mlog(ML_NOTICE, "taking node slot %d\n", osb->slot_num);
+        mlog(0, "taking node slot %d\n", osb->slot_num);
        status = ocfs2_update_disk_slots(osb, si);
        if (status < 0)
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index cdf73393f094..382706a67ffd 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -68,13 +68,6 @@
 #include "buffer_head_io.h"
-/*
- * Globals
- */
-static spinlock_t ocfs2_globals_lock = SPIN_LOCK_UNLOCKED;
-static u32 osb_id;             /* Keeps track of next available OSB Id */
 static kmem_cache_t *ocfs2_inode_cachep = NULL;
 kmem_cache_t *ocfs2_lock_cache = NULL;
@@ -642,10 +635,9 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
        ocfs2_complete_mount_recovery(osb);
-        printk("ocfs2: Mounting device (%u,%u) on (node %d, slot %d) with %s "
+        printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %d, slot %d) "
-               "data mode.\n",
+               "with %s data mode.\n",
-               MAJOR(sb->s_dev), MINOR(sb->s_dev), osb->node_num,
+               osb->dev_str, osb->node_num, osb->slot_num,
-               osb->slot_num,
               osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
               "ordered");
@@ -800,10 +792,6 @@ static int __init ocfs2_init(void)
                goto leave;
        }
-        spin_lock(&ocfs2_globals_lock);
-        osb_id = 0;
-        spin_unlock(&ocfs2_globals_lock);
        ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
        if (!ocfs2_debugfs_root) {
                status = -EFAULT;
@@ -1020,7 +1008,7 @@ static int ocfs2_fill_local_node_info(struct ocfs2_super *osb)
                goto bail;
        }
-        mlog(ML_NOTICE, "I am node %d\n", osb->node_num);
+        mlog(0, "I am node %d\n", osb->node_num);
        status = 0;
 bail:
@@ -1191,8 +1179,8 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
        atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
-        printk("ocfs2: Unmounting device (%u,%u) on (node %d)\n",
+        printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %d)\n",
-               MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev), osb->node_num);
+               osb->dev_str, osb->node_num);
        ocfs2_delete_osb(osb);
        kfree(osb);
@@ -1212,8 +1200,6 @@ static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uu
        if (osb->uuid_str == NULL)
                return -ENOMEM;
-        memcpy(osb->uuid, uuid, OCFS2_VOL_UUID_LEN);
        for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
                /* print with null */
                ret = snprintf(ptr, 3, "%02X", uuid[i]);
@@ -1311,13 +1297,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
                goto bail;
        }
-        osb->uuid = kmalloc(OCFS2_VOL_UUID_LEN, GFP_KERNEL);
-        if (!osb->uuid) {
-                mlog(ML_ERROR, "unable to alloc uuid\n");
-                status = -ENOMEM;
-                goto bail;
-        }
        di = (struct ocfs2_dinode *)bh->b_data;
        osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
@@ -1327,7 +1306,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
                status = -EINVAL;
                goto bail;
        }
-        mlog(ML_NOTICE, "max_slots for this device: %u\n", osb->max_slots);
+        mlog(0, "max_slots for this device: %u\n", osb->max_slots);
        init_waitqueue_head(&osb->osb_wipe_event);
        osb->osb_orphan_wipes = kcalloc(osb->max_slots,
@@ -1418,7 +1397,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
                goto bail;
        }
-        memcpy(&uuid_net_key, &osb->uuid[i], sizeof(osb->net_key));
+        memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key));
        osb->net_key = le32_to_cpu(uuid_net_key);
        strncpy(osb->vol_label, di->id2.i_super.s_label, 63);
@@ -1484,18 +1463,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
                goto bail;
        }
-        /*  Link this osb onto the global linked list of all osb structures. */
-        /*  The Global Link List is mainted for the whole driver . */
-        spin_lock(&ocfs2_globals_lock);
-        osb->osb_id = osb_id;
-        if (osb_id < OCFS2_MAX_OSB_ID)
-                osb_id++;
-        else {
-                mlog(ML_ERROR, "Too many volumes mounted\n");
-                status = -ENOMEM;
-        }
-        spin_unlock(&ocfs2_globals_lock);
 bail:
        mlog_exit(status);
        return status;
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index 0c8a1294ec96..c0f68aa6c175 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -154,7 +154,7 @@ static void *ocfs2_follow_link(struct dentry *dentry,
        }
        status = vfs_follow_link(nd, link);
-        if (status)
+        if (status && status != -ENOENT)
                mlog_errno(status);
 bail:
        if (page) {
diff --git a/fs/partitions/Makefile b/fs/partitions/Makefile
index 42c7d3878ed0..d713ce6b3e12 100644
--- a/fs/partitions/Makefile
+++ b/fs/partitions/Makefile
@@ -4,7 +4,6 @@
 obj-y := check.o
-obj-$(CONFIG_DEVFS_FS) += devfs.o
 obj-$(CONFIG_ACORN_PARTITION) += acorn.o
 obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
 obj-$(CONFIG_ATARI_PARTITION) += atari.o
diff --git a/fs/partitions/acorn.c b/fs/partitions/acorn.c
index c05085710fce..1bc9f372c7d4 100644
--- a/fs/partitions/acorn.c
+++ b/fs/partitions/acorn.c
@@ -12,7 +12,6 @@
 *  every single manufacturer of SCSI and IDE cards created their own
 *  method.
 */
-#include <linux/config.h>
 #include <linux/buffer_head.h>
 #include <linux/adfs_fs.h>
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 2ef313a96b66..839634026eb5 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -18,10 +18,8 @@
 #include <linux/fs.h>
 #include <linux/kmod.h>
 #include <linux/ctype.h>
-#include <linux/devfs_fs_kernel.h>
 #include "check.h"
-#include "devfs.h"
 #include "acorn.h"
 #include "amiga.h"
@@ -161,18 +159,11 @@ check_partition(struct gendisk *hd, struct block_device *bdev)
        if (!state)
                return NULL;
-#ifdef CONFIG_DEVFS_FS
+        disk_name(hd, 0, state->name);
-        if (hd->devfs_name[0] != '\0') {
+        printk(KERN_INFO " %s:", state->name);
-                printk(KERN_INFO " /dev/%s:", hd->devfs_name);
+        if (isdigit(state->name[strlen(state->name)-1]))
                sprintf(state->name, "p");
-        }
-#endif
-        else {
-                disk_name(hd, 0, state->name);
-                printk(KERN_INFO " %s:", state->name);
-                if (isdigit(state->name[strlen(state->name)-1]))
-                        sprintf(state->name, "p");
-        }
        state->limit = hd->minors;
        i = res = 0;
        while (!res && check_part[i]) {
@@ -328,7 +319,6 @@ void delete_partition(struct gendisk *disk, int part)
        p->nr_sects = 0;
        p->ios[0] = p->ios[1] = 0;
        p->sectors[0] = p->sectors[1] = 0;
-        devfs_remove("%s/part%d", disk->devfs_name, part);
        sysfs_remove_link(&p->kobj, "subsystem");
        if (p->holder_dir)
                kobject_unregister(p->holder_dir);
@@ -350,10 +340,6 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len)
        p->nr_sects = len;
        p->partno = part;
-        devfs_mk_bdev(MKDEV(disk->major, disk->first_minor + part),
-                        S_IFBLK|S_IRUSR|S_IWUSR,
-                        "%s/part%d", disk->devfs_name, part);
        if (isdigit(disk->kobj.name[strlen(disk->kobj.name)-1]))
                snprintf(p->kobj.name,KOBJ_NAME_LEN,"%sp%d",disk->kobj.name,part);
        else
@@ -423,14 +409,8 @@ void register_disk(struct gendisk *disk)
        disk_sysfs_add_subdirs(disk);
        /* No minors to use for partitions */
-        if (disk->minors == 1) {
+        if (disk->minors == 1)
-                if (disk->devfs_name[0] != '\0')
-                        devfs_add_disk(disk);
                goto exit;
-        }
-        /* always add handle for the whole disk */
-        devfs_add_partitioned(disk);
        /* No such device (e.g., media were just removed) */
        if (!get_capacity(disk))
@@ -538,8 +518,6 @@ void del_gendisk(struct gendisk *disk)
        disk_stat_set_all(disk, 0);
        disk->stamp = 0;
-        devfs_remove_disk(disk);
        kobject_uevent(&disk->kobj, KOBJ_REMOVE);
        if (disk->holder_dir)
                kobject_unregister(disk->holder_dir);
diff --git a/fs/partitions/devfs.c b/fs/partitions/devfs.c
deleted file mode 100644
index 3f0a780c9cec..000000000000
--- a/fs/partitions/devfs.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * This tries to keep block devices away from devfs as much as possible.
- */
-#include <linux/fs.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/vmalloc.h>
-#include <linux/genhd.h>
-#include <linux/bitops.h>
-#include <linux/mutex.h>
-struct unique_numspace {
-        u32               num_free;          /*  Num free in bits       */
-        u32               length;            /*  Array length in bytes  */
-        unsigned long     *bits;
-        struct semaphore  mutex;
-};
-static DEFINE_MUTEX(numspace_mutex);
-static int expand_numspace(struct unique_numspace *s)
-{
-        u32 length;
-        void *bits;
-        if (s->length < 16)
-                length = 16;
-        else
-                length = s->length << 1;
-        bits = vmalloc(length);
-        if (!bits)
-                return -ENOMEM;
-        if (s->bits) {
-                memcpy(bits, s->bits, s->length);
-                vfree(s->bits);
-        }
-                
-        s->num_free = (length - s->length) << 3;
-        s->bits = bits;
-        memset(bits + s->length, 0, length - s->length);
-        s->length = length;
-        return 0;
-}
-static int alloc_unique_number(struct unique_numspace *s)
-{
-        int rval = 0;
-        mutex_lock(&numspace_mutex);
-        if (s->num_free < 1)
-                rval = expand_numspace(s);
-        if (!rval) {
-                rval = find_first_zero_bit(s->bits, s->length << 3);
-                --s->num_free;
-                __set_bit(rval, s->bits);
-        }
-        mutex_unlock(&numspace_mutex);
-        return rval;
-}
-static void dealloc_unique_number(struct unique_numspace *s, int number)
-{
-        int old_val;
-        if (number >= 0) {
-                mutex_lock(&numspace_mutex);
-                old_val = __test_and_clear_bit(number, s->bits);
-                if (old_val)
-                        ++s->num_free;
-                mutex_unlock(&numspace_mutex);
-        }
-}
-static struct unique_numspace disc_numspace;
-static struct unique_numspace cdrom_numspace;
-void devfs_add_partitioned(struct gendisk *disk)
-{
-        char dirname[64], symlink[16];
-        devfs_mk_dir(disk->devfs_name);
-        devfs_mk_bdev(MKDEV(disk->major, disk->first_minor),
-                        S_IFBLK|S_IRUSR|S_IWUSR,
-                        "%s/disc", disk->devfs_name);
-        disk->number = alloc_unique_number(&disc_numspace);
-        sprintf(symlink, "discs/disc%d", disk->number);
-        sprintf(dirname, "../%s", disk->devfs_name);
-        devfs_mk_symlink(symlink, dirname);
-}
-void devfs_add_disk(struct gendisk *disk)
-{
-        devfs_mk_bdev(MKDEV(disk->major, disk->first_minor),
-                        (disk->flags & GENHD_FL_CD) ?
-                                S_IFBLK|S_IRUGO|S_IWUGO :
-                                S_IFBLK|S_IRUSR|S_IWUSR,
-                        "%s", disk->devfs_name);
-        if (disk->flags & GENHD_FL_CD) {
-                char dirname[64], symlink[16];
-                disk->number = alloc_unique_number(&cdrom_numspace);
-                sprintf(symlink, "cdroms/cdrom%d", disk->number);
-                sprintf(dirname, "../%s", disk->devfs_name);
-                devfs_mk_symlink(symlink, dirname);
-        }
-}
-void devfs_remove_disk(struct gendisk *disk)
-{
-        if (disk->minors != 1) {
-                devfs_remove("discs/disc%d", disk->number);
-                dealloc_unique_number(&disc_numspace, disk->number);
-                devfs_remove("%s/disc", disk->devfs_name);
-        }
-        if (disk->flags & GENHD_FL_CD) {
-                devfs_remove("cdroms/cdrom%d", disk->number);
-                dealloc_unique_number(&cdrom_numspace, disk->number);
-        }
-        devfs_remove(disk->devfs_name);
-}
diff --git a/fs/partitions/devfs.h b/fs/partitions/devfs.h
deleted file mode 100644
index 176118b4e492..000000000000
--- a/fs/partitions/devfs.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifdef CONFIG_DEVFS_FS
-void devfs_add_disk(struct gendisk *dev);
-void devfs_add_partitioned(struct gendisk *dev);
-void devfs_remove_disk(struct gendisk *dev);
-#else
-# define devfs_add_disk(disk)                   do { } while (0)
-# define devfs_add_partitioned(disk)            do { } while (0)
-# define devfs_remove_disk(disk)                do { } while (0)
-#endif
diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c
index 0f5b017aebad..63730282ad81 100644
--- a/fs/partitions/efi.c
+++ b/fs/partitions/efi.c
@@ -91,7 +91,6 @@
 * - Code works, detects all the partitions.
 *
 ************************************************************/
-#include <linux/config.h>
 #include <linux/crc32.h>
 #include "check.h"
 #include "efi.h"
diff --git a/fs/partitions/efi.h b/fs/partitions/efi.h
index c44fb0561448..2cc89d0475bf 100644
--- a/fs/partitions/efi.h
+++ b/fs/partitions/efi.h
@@ -26,7 +26,6 @@
 #define FS_PART_EFI_H_INCLUDED
 #include <linux/types.h>
-#include <linux/config.h>
 #include <linux/fs.h>
 #include <linux/genhd.h>
 #include <linux/kernel.h>
diff --git a/fs/partitions/ibm.c b/fs/partitions/ibm.c
index 830c55d86ab1..d352a7381fed 100644
--- a/fs/partitions/ibm.c
+++ b/fs/partitions/ibm.c
@@ -6,7 +6,6 @@
 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
 */
-#include <linux/config.h>
 #include <linux/buffer_head.h>
 #include <linux/hdreg.h>
 #include <linux/slab.h>
diff --git a/fs/partitions/mac.c b/fs/partitions/mac.c
index 813292f21210..c0871002d00d 100644
--- a/fs/partitions/mac.c
+++ b/fs/partitions/mac.c
@@ -6,7 +6,6 @@
 *  Re-organised Feb 1998 Russell King
 */
-#include <linux/config.h>
 #include <linux/ctype.h>
 #include "check.h"
 #include "mac.h"
diff --git a/fs/partitions/msdos.c b/fs/partitions/msdos.c
index 9935d254186e..8f12587c3129 100644
--- a/fs/partitions/msdos.c
+++ b/fs/partitions/msdos.c
@@ -19,7 +19,6 @@
 *  Re-organised Feb 1998 Russell King
 */
-#include <linux/config.h>
 #include "check.h"
 #include "msdos.h"
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 7a76ad570230..7495d3e20775 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -52,7 +52,6 @@
 *                       :  base.c too.
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/time.h>
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 6ba7785319de..243a94af0427 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -49,7 +49,6 @@
 #include <asm/uaccess.h>
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/time.h>
 #include <linux/proc_fs.h>
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 17f6e8fa1397..036d14d83627 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -9,7 +9,6 @@
 *      Safe accesses to vmalloc/direct-mapped discontiguous areas, Kanoj Sarcar <kanoj@sgi.com>
 */
-#include <linux/config.h>
 #include <linux/mm.h>
 #include <linux/proc_fs.h>
 #include <linux/user.h>
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 5c10ea157425..9f2cfc30f9cf 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -26,7 +26,6 @@
 #include <linux/mman.h>
 #include <linux/proc_fs.h>
 #include <linux/ioport.h>
-#include <linux/config.h>
 #include <linux/mm.h>
 #include <linux/mmzone.h>
 #include <linux/pagemap.h>
@@ -120,7 +119,6 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
 {
        struct sysinfo i;
        int len;
-        struct page_state ps;
        unsigned long inactive;
        unsigned long active;
        unsigned long free;
@@ -129,7 +127,6 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
        struct vmalloc_info vmi;
        long cached;
-        get_page_state(&ps);
        get_zone_counts(&active, &inactive, &free);
 /*
@@ -142,7 +139,8 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
        allowed = ((totalram_pages - hugetlb_total_pages())
                * sysctl_overcommit_ratio / 100) + total_swap_pages;
-        cached = get_page_cache_size() - total_swapcache_pages - i.bufferram;
+        cached = global_page_state(NR_FILE_PAGES) -
+                        total_swapcache_pages - i.bufferram;
        if (cached < 0)
                cached = 0;
@@ -167,11 +165,14 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
                "SwapFree:     %8lu kB\n"
                "Dirty:        %8lu kB\n"
                "Writeback:    %8lu kB\n"
+                "AnonPages:    %8lu kB\n"
                "Mapped:       %8lu kB\n"
                "Slab:         %8lu kB\n"
+                "PageTables:   %8lu kB\n"
+                "NFS Unstable: %8lu kB\n"
+                "Bounce:       %8lu kB\n"
                "CommitLimit:  %8lu kB\n"
                "Committed_AS: %8lu kB\n"
-                "PageTables:   %8lu kB\n"
                "VmallocTotal: %8lu kB\n"
                "VmallocUsed:  %8lu kB\n"
                "VmallocChunk: %8lu kB\n",
@@ -188,13 +189,16 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
                K(i.freeram-i.freehigh),
                K(i.totalswap),
                K(i.freeswap),
-                K(ps.nr_dirty),
+                K(global_page_state(NR_FILE_DIRTY)),
-                K(ps.nr_writeback),
+                K(global_page_state(NR_WRITEBACK)),
-                K(ps.nr_mapped),
+                K(global_page_state(NR_ANON_PAGES)),
-                K(ps.nr_slab),
+                K(global_page_state(NR_FILE_MAPPED)),
+                K(global_page_state(NR_SLAB)),
+                K(global_page_state(NR_PAGETABLE)),
+                K(global_page_state(NR_UNSTABLE_NFS)),
+                K(global_page_state(NR_BOUNCE)),
                K(allowed),
                K(committed),
-                K(ps.nr_page_table_pages),
                (unsigned long)VMALLOC_TOTAL >> 10,
                vmi.used >> 10,
                vmi.largest_chunk >> 10
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 9995356ce73e..8901c65caca8 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -12,7 +12,6 @@
 #include <linux/time.h>
 #include <linux/proc_fs.h>
 #include <linux/stat.h>
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/bitops.h>
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 20d4b2237fce..d96050728c43 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -7,7 +7,6 @@
 *
 */
-#include <linux/config.h>
 #include <linux/mm.h>
 #include <linux/proc_fs.h>
 #include <linux/user.h>
diff --git a/fs/qnx4/bitmap.c b/fs/qnx4/bitmap.c
index 46efbf52cbec..8425cf6e9624 100644
--- a/fs/qnx4/bitmap.c
+++ b/fs/qnx4/bitmap.c
@@ -13,7 +13,6 @@
 * 28-06-1998 by Frank Denis : qnx4_free_inode (to be fixed) .
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/fs.h>
 #include <linux/qnx4_fs.h>
diff --git a/fs/qnx4/dir.c b/fs/qnx4/dir.c
index 9031948fefd0..0d7103fa0df5 100644
--- a/fs/qnx4/dir.c
+++ b/fs/qnx4/dir.c
@@ -11,7 +11,6 @@
 * 20-06-1998 by Frank Denis : Linux 2.1.99+ & dcache support.
 */
-#include <linux/config.h>
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/qnx4/fsync.c b/fs/qnx4/fsync.c
index df5bc75d5414..aa3b19544bee 100644
--- a/fs/qnx4/fsync.c
+++ b/fs/qnx4/fsync.c
@@ -10,7 +10,6 @@
 * 24-03-1998 by Richard Frowijn : first release.
 */
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/time.h>
 #include <linux/stat.h>
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 8bc182a88748..5a903491e697 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -12,7 +12,6 @@
 * 30-06-1998 by Frank Denis : first step to write inodes.
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/string.h>
diff --git a/fs/qnx4/namei.c b/fs/qnx4/namei.c
index 4af4951d7f54..c3d83f67154a 100644
--- a/fs/qnx4/namei.c
+++ b/fs/qnx4/namei.c
@@ -12,7 +12,6 @@
 * 04-07-1998 by Frank Denis : first step for rmdir/unlink.
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/fs.h>
 #include <linux/qnx4_fs.h>
diff --git a/fs/qnx4/truncate.c b/fs/qnx4/truncate.c
index 86563ec01b39..6437c1c3d1dd 100644
--- a/fs/qnx4/truncate.c
+++ b/fs/qnx4/truncate.c
@@ -10,7 +10,6 @@
 * 30-06-1998 by Frank DENIS : ugly filler.
 */
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index 909f71e9a30f..4a7dbdee1b6d 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -3,7 +3,6 @@
 */
 /* Reiserfs block (de)allocator, bitmap-based. */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/reiserfs_fs.h>
 #include <linux/errno.h>
diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c
index 973c819f8033..9aabcc0ccd2d 100644
--- a/fs/reiserfs/dir.c
+++ b/fs/reiserfs/dir.c
@@ -2,7 +2,6 @@
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 */
-#include <linux/config.h>
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
index b2264ba3cc56..fba304e64de8 100644
--- a/fs/reiserfs/do_balan.c
+++ b/fs/reiserfs/do_balan.c
@@ -15,7 +15,6 @@
 **
 **/
-#include <linux/config.h>
 #include <asm/uaccess.h>
 #include <linux/time.h>
 #include <linux/reiserfs_fs.h>
diff --git a/fs/reiserfs/fix_node.c b/fs/reiserfs/fix_node.c
index 5600d3d60cf7..6d0e554daa9d 100644
--- a/fs/reiserfs/fix_node.c
+++ b/fs/reiserfs/fix_node.c
@@ -34,7 +34,6 @@
 ** 
 **/
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/string.h>
 #include <linux/reiserfs_fs.h>
diff --git a/fs/reiserfs/ibalance.c b/fs/reiserfs/ibalance.c
index 6c5a726fd34b..de391a82b999 100644
--- a/fs/reiserfs/ibalance.c
+++ b/fs/reiserfs/ibalance.c
@@ -2,7 +2,6 @@
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 */
-#include <linux/config.h>
 #include <asm/uaccess.h>
 #include <linux/string.h>
 #include <linux/time.h>
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index a24858a632fa..12dfdcfbee3d 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -2,7 +2,6 @@
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/fs.h>
 #include <linux/reiserfs_fs.h>
@@ -2933,6 +2932,11 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
                        }
                        if (error)
                                goto out;
+                        /*
+                         * file size is changed, ctime and mtime are
+                         * to be updated
+                         */
+                        attr->ia_valid |= (ATTR_MTIME | ATTR_CTIME);
                }
        }
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 49d1a53dbef0..9b3672d69367 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -34,7 +34,6 @@
 **                      from within kupdate, it will ignore the immediate flag
 */
-#include <linux/config.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
diff --git a/fs/reiserfs/lbalance.c b/fs/reiserfs/lbalance.c
index 2533c1f64aba..281f8061ac58 100644
--- a/fs/reiserfs/lbalance.c
+++ b/fs/reiserfs/lbalance.c
@@ -2,7 +2,6 @@
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 */
-#include <linux/config.h>
 #include <asm/uaccess.h>
 #include <linux/string.h>
 #include <linux/time.h>
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 284f7852de8b..c61710e49c62 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -11,7 +11,6 @@
 * NO WARRANTY
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/bitops.h>
 #include <linux/reiserfs_fs.h>
diff --git a/fs/reiserfs/objectid.c b/fs/reiserfs/objectid.c
index f62590aa9c95..65feba4deb69 100644
--- a/fs/reiserfs/objectid.c
+++ b/fs/reiserfs/objectid.c
@@ -2,7 +2,6 @@
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 */
-#include <linux/config.h>
 #include <linux/string.h>
 #include <linux/random.h>
 #include <linux/time.h>
diff --git a/fs/reiserfs/prints.c b/fs/reiserfs/prints.c
index 27bd3a1df2ad..bc808a91eeaa 100644
--- a/fs/reiserfs/prints.c
+++ b/fs/reiserfs/prints.c
@@ -2,7 +2,6 @@
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/fs.h>
 #include <linux/reiserfs_fs.h>
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index 731688e1cfe3..5d8a8cfebc70 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -10,7 +10,6 @@
 /* $Id: procfs.c,v 1.1.8.2 2001/07/15 17:08:42 god Exp $ */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/time.h>
 #include <linux/seq_file.h>
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index d2b25e1ba6e9..8b9b13127136 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -49,7 +49,6 @@
 * reiserfs_insert_item
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/string.h>
 #include <linux/pagemap.h>
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 00f1321e9209..28eb3c886034 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -11,7 +11,6 @@
 * NO WARRANTY
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/vmalloc.h>
 #include <linux/time.h>
diff --git a/fs/reiserfs/tail_conversion.c b/fs/reiserfs/tail_conversion.c
index 196e971c03c9..36f108fc1cf5 100644
--- a/fs/reiserfs/tail_conversion.c
+++ b/fs/reiserfs/tail_conversion.c
@@ -2,7 +2,6 @@
 * Copyright 1999 Hans Reiser, see reiserfs/README for licensing and copyright details
 */
-#include <linux/config.h>
 #include <linux/time.h>
 #include <linux/pagemap.h>
 #include <linux/buffer_head.h>
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 506ff87c1d4b..a1ed657c3c84 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -7,7 +7,6 @@
 *  Please add a note about your changes to smbfs in the ChangeLog file.
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/time.h>
 #include <linux/kernel.h>
diff --git a/fs/smbfs/smbiod.c b/fs/smbfs/smbiod.c
index 24577e2c489b..e67540441288 100644
--- a/fs/smbfs/smbiod.c
+++ b/fs/smbfs/smbiod.c
@@ -5,7 +5,6 @@
 *  Copyright (C) 2001, Urban Widmark
 */
-#include <linux/config.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
diff --git a/fs/stat.c b/fs/stat.c
index 0f282face322..3a44dcf97da2 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -4,7 +4,6 @@
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/mm.h>
 #include <linux/errno.h>
diff --git a/fs/super.c b/fs/super.c
index 8a669f6f3f52..9b780c42d845 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -20,7 +20,6 @@
 *  Heavily rewritten for 'one fs - one tree' dcache architecture. AV, Mar 2000
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/init.h>
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 44fe2cb0bbb2..4df822c881b6 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -40,7 +40,6 @@
 #include "udfdecl.h"    
-#include <linux/config.h>
 #include <linux/blkdev.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 2f992387cc9e..1033b7cf2939 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -6,7 +6,6 @@
 #include "osta_udf.h"
 #include <linux/fs.h>
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/udf_fs_i.h>
 #include <linux/udf_fs_sb.h>
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 95b878e5c7a0..b01804baa120 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -217,48 +217,6 @@ failed:
        return;
 }
-static struct page *ufs_get_locked_page(struct address_space *mapping,
-                                  unsigned long index)
-{
-        struct page *page;
-try_again:
-        page = find_lock_page(mapping, index);
-        if (!page) {
-                page = read_cache_page(mapping, index,
-                                       (filler_t*)mapping->a_ops->readpage,
-                                       NULL);
-                if (IS_ERR(page)) {
-                        printk(KERN_ERR "ufs_change_blocknr: "
-                               "read_cache_page error: ino %lu, index: %lu\n",
-                               mapping->host->i_ino, index);
-                        goto out;
-                }
-                lock_page(page);
-                if (!PageUptodate(page) || PageError(page)) {
-                        unlock_page(page);
-                        page_cache_release(page);
-                        printk(KERN_ERR "ufs_change_blocknr: "
-                               "can not read page: ino %lu, index: %lu\n",
-                               mapping->host->i_ino, index);
-                        page = ERR_PTR(-EIO);
-                        goto out;
-                }
-        }
-        if (unlikely(!page->mapping || !page_has_buffers(page))) {
-                unlock_page(page);
-                page_cache_release(page);
-                goto try_again;/*we really need these buffers*/
-        }
-out:
-        return page;
-}
 /*
 * Modify inode page cache in such way:
 * have - blocks with b_blocknr equal to oldb...oldb+count-1
@@ -311,10 +269,8 @@ static void ufs_change_blocknr(struct inode *inode, unsigned int baseblk,
                set_page_dirty(page);
-                if (likely(cur_index != index)) {
+                if (likely(cur_index != index))
-                        unlock_page(page);
+                        ufs_put_locked_page(page);
-                        page_cache_release(page);
-                }
        }
        UFSD("EXIT\n");
 }
diff --git a/fs/ufs/file.c b/fs/ufs/file.c
index 0e5001512a9d..a9c6e5f04fae 100644
--- a/fs/ufs/file.c
+++ b/fs/ufs/file.c
@@ -60,7 +60,3 @@ const struct file_operations ufs_file_operations = {
        .fsync          = ufs_sync_file,
        .sendfile       = generic_file_sendfile,
 };
-struct inode_operations ufs_file_inode_operations = {
-        .truncate       = ufs_truncate,
-};
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 8e1f90e42040..e7c8615beb65 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -98,7 +98,9 @@ static u64 ufs_frag_map(struct inode *inode, sector_t frag)
        u64 temp = 0L;
        UFSD(": frag = %llu  depth = %d\n", (unsigned long long)frag, depth);
-        UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",uspi->s_fpbshift,uspi->s_apbmask,mask);
+        UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",
+                uspi->s_fpbshift, uspi->s_apbmask,
+                (unsigned long long)mask);
        if (depth == 0)
                return 0;
@@ -429,7 +431,7 @@ int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head
        
        if (!create) {
                phys64 = ufs_frag_map(inode, fragment);
-                UFSD("phys64 = %llu \n",phys64);
+                UFSD("phys64 = %llu\n", (unsigned long long)phys64);
                if (phys64)
                        map_bh(bh_result, sb, phys64);
                return 0;
@@ -841,14 +843,17 @@ int ufs_sync_inode (struct inode *inode)
 void ufs_delete_inode (struct inode * inode)
 {
+        loff_t old_i_size;
        truncate_inode_pages(&inode->i_data, 0);
        /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
        lock_kernel();
        mark_inode_dirty(inode);
        ufs_update_inode(inode, IS_SYNC(inode));
+        old_i_size = inode->i_size;
        inode->i_size = 0;
-        if (inode->i_blocks)
+        if (inode->i_blocks && ufs_truncate(inode, old_i_size))
-                ufs_truncate (inode);
+                ufs_warning(inode->i_sb, __FUNCTION__, "ufs_truncate failed\n");
        ufs_free_inode (inode);
        unlock_kernel();
 }
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 74ef5e9bedff..19a99726e58d 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -64,7 +64,6 @@
 */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/bitops.h>
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index 3c3b301f8701..c9b55872079b 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -369,24 +369,97 @@ static int ufs_trunc_tindirect (struct inode * inode)
        UFSD("EXIT\n");
        return retry;
 }
-                
-void ufs_truncate (struct inode * inode)
+static int ufs_alloc_lastblock(struct inode *inode)
 {
+        int err = 0;
+        struct address_space *mapping = inode->i_mapping;
+        struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
        struct ufs_inode_info *ufsi = UFS_I(inode);
-        struct super_block * sb;
+        unsigned lastfrag, i, end;
-        struct ufs_sb_private_info * uspi;
+        struct page *lastpage;
-        int retry;
+        struct buffer_head *bh;
+        lastfrag = (i_size_read(inode) + uspi->s_fsize - 1) >> uspi->s_fshift;
+        if (!lastfrag) {
+                ufsi->i_lastfrag = 0;
+                goto out;
+        }
+        lastfrag--;
+        lastpage = ufs_get_locked_page(mapping, lastfrag >>
+                                       (PAGE_CACHE_SHIFT - inode->i_blkbits));
+       if (IS_ERR(lastpage)) {
+               err = -EIO;
+               goto out;
+       }
+       end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1);
+       bh = page_buffers(lastpage);
+       for (i = 0; i < end; ++i)
+               bh = bh->b_this_page;
+       if (!buffer_mapped(bh)) {
+               err = ufs_getfrag_block(inode, lastfrag, bh, 1);
+               if (unlikely(err))
+                       goto out_unlock;
+               if (buffer_new(bh)) {
+                       clear_buffer_new(bh);
+                       unmap_underlying_metadata(bh->b_bdev,
+                                                 bh->b_blocknr);
+                       /*
+                        * we do not zeroize fragment, because of
+                        * if it maped to hole, it already contains zeroes
+                        */
+                       set_buffer_uptodate(bh);
+                       mark_buffer_dirty(bh);
+                       set_page_dirty(lastpage);
+               }
+       }
+out_unlock:
+       ufs_put_locked_page(lastpage);
+out:
+       return err;
+}
+int ufs_truncate(struct inode *inode, loff_t old_i_size)
+{
+        struct ufs_inode_info *ufsi = UFS_I(inode);
+        struct super_block *sb = inode->i_sb;
+        struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+        int retry, err = 0;
        
        UFSD("ENTER\n");
-        sb = inode->i_sb;
-        uspi = UFS_SB(sb)->s_uspi;
-        if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)))
+        if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
-                return;
+              S_ISLNK(inode->i_mode)))
+                return -EINVAL;
        if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
-                return;
+                return -EPERM;
+        if (inode->i_size > old_i_size) {
+                /*
+                 * if we expand file we should care about
+                 * allocation of block for last byte first of all
+                 */
+                err = ufs_alloc_lastblock(inode);
+                if (err) {
+                        i_size_write(inode, old_i_size);
+                        goto out;
+                }
+                /*
+                 * go away, because of we expand file, and we do not
+                 * need free blocks, and zeroizes page
+                 */
+                lock_kernel();
+                goto almost_end;
+        }
-        block_truncate_page(inode->i_mapping,   inode->i_size, ufs_getfrag_block);
+        block_truncate_page(inode->i_mapping, inode->i_size, ufs_getfrag_block);
        lock_kernel();
        while (1) {
@@ -404,9 +477,58 @@ void ufs_truncate (struct inode * inode)
                yield();
        }
+        if (inode->i_size < old_i_size) {
+                /*
+                 * now we should have enough space
+                 * to allocate block for last byte
+                 */
+                err = ufs_alloc_lastblock(inode);
+                if (err)
+                        /*
+                         * looks like all the same - we have no space,
+                         * but we truncate file already
+                         */
+                        inode->i_size = (ufsi->i_lastfrag - 1) * uspi->s_fsize;
+        }
+almost_end:
        inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
-        ufsi->i_lastfrag = DIRECT_FRAGMENT;
        unlock_kernel();
        mark_inode_dirty(inode);
-        UFSD("EXIT\n");
+out:
+        UFSD("EXIT: err %d\n", err);
+        return err;
 }
+/*
+ * We don't define our `inode->i_op->truncate', and call it here,
+ * because of:
+ * - there is no way to know old size
+ * - there is no way inform user about error, if it happens in `truncate'
+ */
+static int ufs_setattr(struct dentry *dentry, struct iattr *attr)
+{
+        struct inode *inode = dentry->d_inode;
+        unsigned int ia_valid = attr->ia_valid;
+        int error;
+        error = inode_change_ok(inode, attr);
+        if (error)
+                return error;
+        if (ia_valid & ATTR_SIZE &&
+            attr->ia_size != i_size_read(inode)) {
+                loff_t old_i_size = inode->i_size;
+                error = vmtruncate(inode, attr->ia_size);
+                if (error)
+                        return error;
+                error = ufs_truncate(inode, old_i_size);
+                if (error)
+                        return error;
+        }
+        return inode_setattr(inode, attr);
+}
+struct inode_operations ufs_file_inode_operations = {
+        .setattr = ufs_setattr,
+};
diff --git a/fs/ufs/util.c b/fs/ufs/util.c
index a2f13f45708b..337cf2c46d10 100644
--- a/fs/ufs/util.c
+++ b/fs/ufs/util.c
@@ -233,3 +233,57 @@ ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev
        else
                ufsi->i_u1.i_data[0] = fs32;
 }
+/**
+ * ufs_get_locked_page() - locate, pin and lock a pagecache page, if not exist
+ * read it from disk.
+ * @mapping: the address_space to search
+ * @index: the page index
+ *
+ * Locates the desired pagecache page, if not exist we'll read it,
+ * locks it, increments its reference
+ * count and returns its address.
+ *
+ */
+struct page *ufs_get_locked_page(struct address_space *mapping,
+                                 pgoff_t index)
+{
+        struct page *page;
+try_again:
+        page = find_lock_page(mapping, index);
+        if (!page) {
+                page = read_cache_page(mapping, index,
+                                       (filler_t*)mapping->a_ops->readpage,
+                                       NULL);
+                if (IS_ERR(page)) {
+                        printk(KERN_ERR "ufs_change_blocknr: "
+                               "read_cache_page error: ino %lu, index: %lu\n",
+                               mapping->host->i_ino, index);
+                        goto out;
+                }
+                lock_page(page);
+                if (!PageUptodate(page) || PageError(page)) {
+                        unlock_page(page);
+                        page_cache_release(page);
+                        printk(KERN_ERR "ufs_change_blocknr: "
+                               "can not read page: ino %lu, index: %lu\n",
+                               mapping->host->i_ino, index);
+                        page = ERR_PTR(-EIO);
+                        goto out;
+                }
+        }
+        if (unlikely(!page->mapping || !page_has_buffers(page))) {
+                unlock_page(page);
+                page_cache_release(page);
+                goto try_again;/*we really need these buffers*/
+        }
+out:
+        return page;
+}
diff --git a/fs/ufs/util.h b/fs/ufs/util.h
index 406981fff5e7..28fce6c239b5 100644
--- a/fs/ufs/util.h
+++ b/fs/ufs/util.h
@@ -251,6 +251,14 @@ extern void _ubh_ubhcpymem_(struct ufs_sb_private_info *, unsigned char *, struc
 #define ubh_memcpyubh(ubh,mem,size) _ubh_memcpyubh_(uspi,ubh,mem,size)
 extern void _ubh_memcpyubh_(struct ufs_sb_private_info *, struct ufs_buffer_head *, unsigned char *, unsigned);
+/* This functions works with cache pages*/
+extern struct page *ufs_get_locked_page(struct address_space *mapping,
+                                        pgoff_t index);
+static inline void ufs_put_locked_page(struct page *page)
+{
+       unlock_page(page);
+       page_cache_release(page);
+}
 /*
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h
index 4dd6592d5a4c..ceda3a2859d2 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/linux-2.6/xfs_buf.h
@@ -18,7 +18,6 @@
 #ifndef __XFS_BUF_H__
 #define __XFS_BUF_H__
-#include <linux/config.h>
 #include <linux/list.h>
 #include <linux/types.h>
 #include <linux/spinlock.h>
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c
index 601f01c92f7f..270db0f3861d 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl32.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl32.c
@@ -15,7 +15,6 @@
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
-#include <linux/config.h>
 #include <linux/compat.h>
 #include <linux/init.h>
 #include <linux/ioctl.h>
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
index 028eb17ec2ed..8c021dc57d1f 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/linux-2.6/xfs_linux.h
@@ -19,7 +19,6 @@
 #define __XFS_LINUX__
 #include <linux/types.h>
-#include <linux/config.h>
 /*
 * Some types are conditional depending on the target system.