Merge branch 'linus' into sched/core

Conflicts:
	fs/proc/array.c

Merge reason: resolve conflict and queue up dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

9 files changed, 2 insertions, 368 deletions

diff --git a/fs/qnx4/Kconfig b/fs/qnx4/Kconfig
index be8e0e1445b6..5f6089994042 100644
--- a/fs/qnx4/Kconfig
+++ b/fs/qnx4/Kconfig
@@ -6,20 +6,9 @@ config QNX4FS_FS
           QNX 4 and QNX 6 (the latter is also called QNX RTP).
           Further information is available at <http://www.qnx.com/>.
           Say Y if you intend to mount QNX hard disks or floppies.
-          Unless you say Y to "QNX4FS read-write support" below, you will
-          only be able to read these file systems.
 
           To compile this file system support as a module, choose M here: the
           module will be called qnx4.
 
           If you don't know whether you need it, then you don't need it:
           answer N.
-
-config QNX4FS_RW
-        bool "QNX4FS write support (DANGEROUS)"
-        depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
-        help
-          Say Y if you want to test write support for QNX4 file systems.
-
-          It's currently broken, so for now:
-          answer N.
diff --git a/fs/qnx4/Makefile b/fs/qnx4/Makefile
index e4d408cc5473..4a283b3f87f8 100644
--- a/fs/qnx4/Makefile
+++ b/fs/qnx4/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_QNX4FS_FS) += qnx4.o
 
-qnx4-objs := inode.o dir.o namei.o file.o bitmap.o truncate.o
+qnx4-objs := inode.o dir.o namei.o bitmap.o
diff --git a/fs/qnx4/bitmap.c b/fs/qnx4/bitmap.c
index e1cd061a25f7..0afba069d567 100644
--- a/fs/qnx4/bitmap.c
+++ b/fs/qnx4/bitmap.c
@@ -78,84 +78,3 @@ unsigned long qnx4_count_free_blocks(struct super_block *sb)
 
         return total_free;
 }
-
-#ifdef CONFIG_QNX4FS_RW
-
-int qnx4_is_free(struct super_block *sb, long block)
-{
-        int start = le32_to_cpu(qnx4_sb(sb)->BitMap->di_first_xtnt.xtnt_blk) - 1;
-        int size = le32_to_cpu(qnx4_sb(sb)->BitMap->di_size);
-        struct buffer_head *bh;
-        const char *g;
-        int ret = -EIO;
-
-        start += block / (QNX4_BLOCK_SIZE * 8);
-        QNX4DEBUG(("qnx4: is_free requesting block [%lu], bitmap in block [%lu]\n",
-                   (unsigned long) block, (unsigned long) start));
-        (void) size;            /* CHECKME */
-        bh = sb_bread(sb, start);
-        if (bh == NULL) {
-                return -EIO;
-        }
-        g = bh->b_data + (block % QNX4_BLOCK_SIZE);
-        if (((*g) & (1 << (block % 8))) == 0) {
-                QNX4DEBUG(("qnx4: is_free -> block is free\n"));
-                ret = 1;
-        } else {
-                QNX4DEBUG(("qnx4: is_free -> block is busy\n"));
-                ret = 0;
-        }
-        brelse(bh);
-
-        return ret;
-}
-
-int qnx4_set_bitmap(struct super_block *sb, long block, int busy)
-{
-        int start = le32_to_cpu(qnx4_sb(sb)->BitMap->di_first_xtnt.xtnt_blk) - 1;
-        int size = le32_to_cpu(qnx4_sb(sb)->BitMap->di_size);
-        struct buffer_head *bh;
-        char *g;
-
-        start += block / (QNX4_BLOCK_SIZE * 8);
-        QNX4DEBUG(("qnx4: set_bitmap requesting block [%lu], bitmap in block [%lu]\n",
-                   (unsigned long) block, (unsigned long) start));
-        (void) size;            /* CHECKME */
-        bh = sb_bread(sb, start);
-        if (bh == NULL) {
-                return -EIO;
-        }
-        g = bh->b_data + (block % QNX4_BLOCK_SIZE);
-        if (busy == 0) {
-                (*g) &= ~(1 << (block % 8));
-        } else {
-                (*g) |= (1 << (block % 8));
-        }
-        mark_buffer_dirty(bh);
-        brelse(bh);
-
-        return 0;
-}
-
-static void qnx4_clear_inode(struct inode *inode)
-{
-        struct qnx4_inode_entry *qnx4_ino = qnx4_raw_inode(inode);
-        /* What for? */
-        memset(qnx4_ino->di_fname, 0, sizeof qnx4_ino->di_fname);
-        qnx4_ino->di_size = 0;
-        qnx4_ino->di_num_xtnts = 0;
-        qnx4_ino->di_mode = 0;
-        qnx4_ino->di_status = 0;
-}
-
-void qnx4_free_inode(struct inode *inode)
-{
-        if (inode->i_ino < 1) {
-                printk("free_inode: inode 0 or nonexistent inode\n");
-                return;
-        }
-        qnx4_clear_inode(inode);
-        clear_inode(inode);
-}
-
-#endif
diff --git a/fs/qnx4/dir.c b/fs/qnx4/dir.c
index 003c68f3238b..86cc39cb1398 100644
--- a/fs/qnx4/dir.c
+++ b/fs/qnx4/dir.c
@@ -85,9 +85,4 @@ const struct file_operations qnx4_dir_operations =
 const struct inode_operations qnx4_dir_inode_operations =
 {
         .lookup         = qnx4_lookup,
-#ifdef CONFIG_QNX4FS_RW
-        .create         = qnx4_create,
-        .unlink         = qnx4_unlink,
-        .rmdir          = qnx4_rmdir,
-#endif
 };
diff --git a/fs/qnx4/file.c b/fs/qnx4/file.c
deleted file mode 100644
index 09b170ac936c..000000000000
--- a/fs/qnx4/file.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * QNX4 file system, Linux implementation.
- *
- * Version : 0.2.1
- *
- * Using parts of the xiafs filesystem.
- *
- * History :
- *
- * 25-05-1998 by Richard Frowijn : first release.
- * 21-06-1998 by Frank Denis : wrote qnx4_readpage to use generic_file_read.
- * 27-06-1998 by Frank Denis : file overwriting.
- */
-
-#include "qnx4.h"
-
-/*
- * We have mostly NULL's here: the current defaults are ok for
- * the qnx4 filesystem.
- */
-const struct file_operations qnx4_file_operations =
-{
-        .llseek         = generic_file_llseek,
-        .read           = do_sync_read,
-        .aio_read       = generic_file_aio_read,
-        .mmap           = generic_file_mmap,
-        .splice_read    = generic_file_splice_read,
-#ifdef CONFIG_QNX4FS_RW
-        .write          = do_sync_write,
-        .aio_write      = generic_file_aio_write,
-        .fsync          = simple_fsync,
-#endif
-};
-
-const struct inode_operations qnx4_file_inode_operations =
-{
-#ifdef CONFIG_QNX4FS_RW
-        .truncate       = qnx4_truncate,
-#endif
-};
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 681df5fcd161..d2cd1798d8c4 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -28,73 +28,6 @@
 
 static const struct super_operations qnx4_sops;
 
-#ifdef CONFIG_QNX4FS_RW
-
-static void qnx4_delete_inode(struct inode *inode)
-{
-        QNX4DEBUG(("qnx4: deleting inode [%lu]\n", (unsigned long) inode->i_ino));
-        truncate_inode_pages(&inode->i_data, 0);
-        inode->i_size = 0;
-        qnx4_truncate(inode);
-        lock_kernel();
-        qnx4_free_inode(inode);
-        unlock_kernel();
-}
-
-static int qnx4_write_inode(struct inode *inode, int do_sync)
-{
-        struct qnx4_inode_entry *raw_inode;
-        int block, ino;
-        struct buffer_head *bh;
-        ino = inode->i_ino;
-
-        QNX4DEBUG(("qnx4: write inode 1.\n"));
-        if (inode->i_nlink == 0) {
-                return 0;
-        }
-        if (!ino) {
-                printk("qnx4: bad inode number on dev %s: %d is out of range\n",
-                       inode->i_sb->s_id, ino);
-                return -EIO;
-        }
-        QNX4DEBUG(("qnx4: write inode 2.\n"));
-        block = ino / QNX4_INODES_PER_BLOCK;
-        lock_kernel();
-        if (!(bh = sb_bread(inode->i_sb, block))) {
-                printk("qnx4: major problem: unable to read inode from dev "
-                       "%s\n", inode->i_sb->s_id);
-                unlock_kernel();
-                return -EIO;
-        }
-        raw_inode = ((struct qnx4_inode_entry *) bh->b_data) +
-            (ino % QNX4_INODES_PER_BLOCK);
-        raw_inode->di_mode  = cpu_to_le16(inode->i_mode);
-        raw_inode->di_uid   = cpu_to_le16(fs_high2lowuid(inode->i_uid));
-        raw_inode->di_gid   = cpu_to_le16(fs_high2lowgid(inode->i_gid));
-        raw_inode->di_nlink = cpu_to_le16(inode->i_nlink);
-        raw_inode->di_size  = cpu_to_le32(inode->i_size);
-        raw_inode->di_mtime = cpu_to_le32(inode->i_mtime.tv_sec);
-        raw_inode->di_atime = cpu_to_le32(inode->i_atime.tv_sec);
-        raw_inode->di_ctime = cpu_to_le32(inode->i_ctime.tv_sec);
-        raw_inode->di_first_xtnt.xtnt_size = cpu_to_le32(inode->i_blocks);
-        mark_buffer_dirty(bh);
-        if (do_sync) {
-                sync_dirty_buffer(bh);
-                if (buffer_req(bh) && !buffer_uptodate(bh)) {
-                        printk("qnx4: IO error syncing inode [%s:%08x]\n",
-                                        inode->i_sb->s_id, ino);
-                        brelse(bh);
-                        unlock_kernel();
-                        return -EIO;
-                }
-        }
-        brelse(bh);
-        unlock_kernel();
-        return 0;
-}
-
-#endif
-
 static void qnx4_put_super(struct super_block *sb);
 static struct inode *qnx4_alloc_inode(struct super_block *sb);
 static void qnx4_destroy_inode(struct inode *inode);
@@ -108,10 +41,6 @@ static const struct super_operations qnx4_sops =
         .put_super      = qnx4_put_super,
         .statfs         = qnx4_statfs,
         .remount_fs     = qnx4_remount,
-#ifdef CONFIG_QNX4FS_RW
-        .write_inode    = qnx4_write_inode,
-        .delete_inode   = qnx4_delete_inode,
-#endif
 };
 
 static int qnx4_remount(struct super_block *sb, int *flags, char *data)
@@ -120,15 +49,7 @@ static int qnx4_remount(struct super_block *sb, int *flags, char *data)
 
         qs = qnx4_sb(sb);
         qs->Version = QNX4_VERSION;
-#ifndef CONFIG_QNX4FS_RW
         *flags |= MS_RDONLY;
-#endif
-        if (*flags & MS_RDONLY) {
-                return 0;
-        }
-
-        mark_buffer_dirty(qs->sb_buf);
-
         return 0;
 }
 
@@ -354,9 +275,7 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
         }
         s->s_op = &qnx4_sops;
         s->s_magic = QNX4_SUPER_MAGIC;
-#ifndef CONFIG_QNX4FS_RW
         s->s_flags |= MS_RDONLY;        /* Yup, read-only yet */
-#endif
         qnx4_sb(s)->sb_buf = bh;
         qnx4_sb(s)->sb = (struct qnx4_super_block *) bh->b_data;
 
@@ -489,8 +408,7 @@ struct inode *qnx4_iget(struct super_block *sb, unsigned long ino)
 
         memcpy(qnx4_inode, raw_inode, QNX4_DIR_ENTRY_SIZE);
         if (S_ISREG(inode->i_mode)) {
-                inode->i_op = &qnx4_file_inode_operations;
-                inode->i_fop = &qnx4_file_operations;
+                inode->i_fop = &generic_ro_fops;
                 inode->i_mapping->a_ops = &qnx4_aops;
                 qnx4_i(inode)->mmu_private = inode->i_size;
         } else if (S_ISDIR(inode->i_mode)) {
diff --git a/fs/qnx4/namei.c b/fs/qnx4/namei.c
index 5972ed214937..ae1e7edbacd6 100644
--- a/fs/qnx4/namei.c
+++ b/fs/qnx4/namei.c
@@ -134,108 +134,3 @@ out:
 
         return NULL;
 }
-
-#ifdef CONFIG_QNX4FS_RW
-int qnx4_create(struct inode *dir, struct dentry *dentry, int mode,
-                struct nameidata *nd)
-{
-        QNX4DEBUG(("qnx4: qnx4_create\n"));
-        if (dir == NULL) {
-                return -ENOENT;
-        }
-        return -ENOSPC;
-}
-
-int qnx4_rmdir(struct inode *dir, struct dentry *dentry)
-{
-        struct buffer_head *bh;
-        struct qnx4_inode_entry *de;
-        struct inode *inode;
-        int retval;
-        int ino;
-
-        QNX4DEBUG(("qnx4: qnx4_rmdir [%s]\n", dentry->d_name.name));
-        lock_kernel();
-        bh = qnx4_find_entry(dentry->d_name.len, dir, dentry->d_name.name,
-                             &de, &ino);
-        if (bh == NULL) {
-                unlock_kernel();
-                return -ENOENT;
-        }
-        inode = dentry->d_inode;
-        if (inode->i_ino != ino) {
-                retval = -EIO;
-                goto end_rmdir;
-        }
-#if 0
-        if (!empty_dir(inode)) {
-                retval = -ENOTEMPTY;
-                goto end_rmdir;
-        }
-#endif
-        if (inode->i_nlink != 2) {
-                QNX4DEBUG(("empty directory has nlink!=2 (%d)\n", inode->i_nlink));
-        }
-        QNX4DEBUG(("qnx4: deleting directory\n"));
-        de->di_status = 0;
-        memset(de->di_fname, 0, sizeof de->di_fname);
-        de->di_mode = 0;
-        mark_buffer_dirty_inode(bh, dir);
-        clear_nlink(inode);
-        mark_inode_dirty(inode);
-        inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
-        inode_dec_link_count(dir);
-        retval = 0;
-
-      end_rmdir:
-        brelse(bh);
-
-        unlock_kernel();
-        return retval;
-}
-
-int qnx4_unlink(struct inode *dir, struct dentry *dentry)
-{
-        struct buffer_head *bh;
-        struct qnx4_inode_entry *de;
-        struct inode *inode;
-        int retval;
-        int ino;
-
-        QNX4DEBUG(("qnx4: qnx4_unlink [%s]\n", dentry->d_name.name));
-        lock_kernel();
-        bh = qnx4_find_entry(dentry->d_name.len, dir, dentry->d_name.name,
-                             &de, &ino);
-        if (bh == NULL) {
-                unlock_kernel();
-                return -ENOENT;
-        }
-        inode = dentry->d_inode;
-        if (inode->i_ino != ino) {
-                retval = -EIO;
-                goto end_unlink;
-        }
-        retval = -EPERM;
-        if (!inode->i_nlink) {
-                QNX4DEBUG(("Deleting nonexistent file (%s:%lu), %d\n",
-                           inode->i_sb->s_id,
-                           inode->i_ino, inode->i_nlink));
-                inode->i_nlink = 1;
-        }
-        de->di_status = 0;
-        memset(de->di_fname, 0, sizeof de->di_fname);
-        de->di_mode = 0;
-        mark_buffer_dirty_inode(bh, dir);
-        dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
-        mark_inode_dirty(dir);
-        inode->i_ctime = dir->i_ctime;
-        inode_dec_link_count(inode);
-        retval = 0;
-
-end_unlink:
-        unlock_kernel();
-        brelse(bh);
-
-        return retval;
-}
-#endif
diff --git a/fs/qnx4/qnx4.h b/fs/qnx4/qnx4.h
index 9efc089454f6..33a60858203b 100644
--- a/fs/qnx4/qnx4.h
+++ b/fs/qnx4/qnx4.h
@@ -29,17 +29,9 @@ extern unsigned long qnx4_block_map(struct inode *inode, long iblock);
 
 extern struct buffer_head *qnx4_bread(struct inode *, int, int);
 
-extern const struct inode_operations qnx4_file_inode_operations;
 extern const struct inode_operations qnx4_dir_inode_operations;
-extern const struct file_operations qnx4_file_operations;
 extern const struct file_operations qnx4_dir_operations;
 extern int qnx4_is_free(struct super_block *sb, long block);
-extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy);
-extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode, struct nameidata *nd);
-extern void qnx4_truncate(struct inode *inode);
-extern void qnx4_free_inode(struct inode *inode);
-extern int qnx4_unlink(struct inode *dir, struct dentry *dentry);
-extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry);
 
 static inline struct qnx4_sb_info *qnx4_sb(struct super_block *sb)
 {
diff --git a/fs/qnx4/truncate.c b/fs/qnx4/truncate.c
deleted file mode 100644
index d94d9ee241fe..000000000000
--- a/fs/qnx4/truncate.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* 
- * QNX4 file system, Linux implementation.
- * 
- * Version : 0.1
- * 
- * Using parts of the xiafs filesystem.
- * 
- * History :
- * 
- * 30-06-1998 by Frank DENIS : ugly filler.
- */
-
-#include <linux/smp_lock.h>
-#include "qnx4.h"
-
-#ifdef CONFIG_QNX4FS_RW
-
-void qnx4_truncate(struct inode *inode)
-{
-        if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
-              S_ISLNK(inode->i_mode))) {
-                return;
-        }
-        lock_kernel();
-        if (!(S_ISDIR(inode->i_mode))) {
-                /* TODO */
-        }
-        QNX4DEBUG(("qnx4: qnx4_truncate called\n"));
-        inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
-        mark_inode_dirty(inode);
-        unlock_kernel();
-}
-
-#endif