5 files changed, 79 insertions, 19 deletions

diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c
index 429acbb4e064..d0b54f30b914 100644
--- a/fs/ext3/dir.c
+++ b/fs/ext3/dir.c
@@ -44,6 +44,9 @@ const struct file_operations ext3_dir_operations = {
         .read           = generic_read_dir,
         .readdir        = ext3_readdir,         /* we take BKL. needed?*/
         .ioctl          = ext3_ioctl,           /* BKL held */
+#ifdef CONFIG_COMPAT
+        .compat_ioctl   = ext3_compat_ioctl,
+#endif
         .fsync          = ext3_sync_file,       /* BKL held */
 #ifdef CONFIG_EXT3_INDEX
         .release        = ext3_release_dir,
diff --git a/fs/ext3/file.c b/fs/ext3/file.c
index 994efd189f4e..e96c388047e0 100644
--- a/fs/ext3/file.c
+++ b/fs/ext3/file.c
@@ -48,14 +48,15 @@ static int ext3_release_file (struct inode * inode, struct file * filp)
 }
 
 static ssize_t
-ext3_file_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t pos)
+ext3_file_write(struct kiocb *iocb, const struct iovec *iov,
+                unsigned long nr_segs, loff_t pos)
 {
         struct file *file = iocb->ki_filp;
         struct inode *inode = file->f_dentry->d_inode;
         ssize_t ret;
         int err;
 
-        ret = generic_file_aio_write(iocb, buf, count, pos);
+        ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
 
         /*
          * Skip flushing if there was an error, or if nothing was written.
@@ -111,9 +112,10 @@ const struct file_operations ext3_file_operations = {
         .write          = do_sync_write,
         .aio_read       = generic_file_aio_read,
         .aio_write      = ext3_file_write,
-        .readv          = generic_file_readv,
-        .writev         = generic_file_writev,
         .ioctl          = ext3_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl   = ext3_compat_ioctl,
+#endif
         .mmap           = generic_file_mmap,
         .open           = generic_file_open,
         .release        = ext3_release_file,
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index dcf4f1dd108b..03ba5bcab186 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -36,6 +36,7 @@
 #include <linux/writeback.h>
 #include <linux/mpage.h>
 #include <linux/uio.h>
+#include <linux/bio.h>
 #include "xattr.h"
 #include "acl.h"
 
@@ -1073,7 +1074,7 @@ struct buffer_head *ext3_bread(handle_t *handle, struct inode *inode,
                 return bh;
         if (buffer_uptodate(bh))
                 return bh;
-        ll_rw_block(READ, 1, &bh);
+        ll_rw_block(READ_META, 1, &bh);
         wait_on_buffer(bh);
         if (buffer_uptodate(bh))
                 return bh;
@@ -2540,7 +2541,7 @@ make_io:
                  */
                 get_bh(bh);
                 bh->b_end_io = end_buffer_read_sync;
-                submit_bh(READ, bh);
+                submit_bh(READ_META, bh);
                 wait_on_buffer(bh);
                 if (!buffer_uptodate(bh)) {
                         ext3_error(inode->i_sb, "ext3_get_inode_loc",
diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
index 3a6b012d120c..12daa6869572 100644
--- a/fs/ext3/ioctl.c
+++ b/fs/ext3/ioctl.c
@@ -13,9 +13,10 @@
 #include <linux/ext3_fs.h>
 #include <linux/ext3_jbd.h>
 #include <linux/time.h>
+#include <linux/compat.h>
+#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 
-
 int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
                 unsigned long arg)
 {
@@ -252,3 +253,55 @@ flags_err:
                 return -ENOTTY;
         }
 }
+
+#ifdef CONFIG_COMPAT
+long ext3_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        struct inode *inode = file->f_dentry->d_inode;
+        int ret;
+
+        /* These are just misnamed, they actually get/put from/to user an int */
+        switch (cmd) {
+        case EXT3_IOC32_GETFLAGS:
+                cmd = EXT3_IOC_GETFLAGS;
+                break;
+        case EXT3_IOC32_SETFLAGS:
+                cmd = EXT3_IOC_SETFLAGS;
+                break;
+        case EXT3_IOC32_GETVERSION:
+                cmd = EXT3_IOC_GETVERSION;
+                break;
+        case EXT3_IOC32_SETVERSION:
+                cmd = EXT3_IOC_SETVERSION;
+                break;
+        case EXT3_IOC32_GROUP_EXTEND:
+                cmd = EXT3_IOC_GROUP_EXTEND;
+                break;
+        case EXT3_IOC32_GETVERSION_OLD:
+                cmd = EXT3_IOC_GETVERSION_OLD;
+                break;
+        case EXT3_IOC32_SETVERSION_OLD:
+                cmd = EXT3_IOC_SETVERSION_OLD;
+                break;
+#ifdef CONFIG_JBD_DEBUG
+        case EXT3_IOC32_WAIT_FOR_READONLY:
+                cmd = EXT3_IOC_WAIT_FOR_READONLY;
+                break;
+#endif
+        case EXT3_IOC32_GETRSVSZ:
+                cmd = EXT3_IOC_GETRSVSZ;
+                break;
+        case EXT3_IOC32_SETRSVSZ:
+                cmd = EXT3_IOC_SETRSVSZ;
+                break;
+        case EXT3_IOC_GROUP_ADD:
+                break;
+        default:
+                return -ENOIOCTLCMD;
+        }
+        lock_kernel();
+        ret = ext3_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
+        unlock_kernel();
+        return ret;
+}
+#endif
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 85d132c37ee0..906731a20f1a 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -35,6 +35,7 @@
 #include <linux/string.h>
 #include <linux/quotaops.h>
 #include <linux/buffer_head.h>
+#include <linux/bio.h>
 #include <linux/smp_lock.h>
 
 #include "namei.h"
@@ -870,7 +871,7 @@ restart:
                                 bh = ext3_getblk(NULL, dir, b++, 0, &err);
                                 bh_use[ra_max] = bh;
                                 if (bh)
-                                        ll_rw_block(READ, 1, &bh);
+                                        ll_rw_block(READ_META, 1, &bh);
                         }
                 }
                 if ((bh = bh_use[ra_ptr++]) == NULL)
@@ -1615,12 +1616,12 @@ static int ext3_delete_entry (handle_t *handle,
  */
 static inline void ext3_inc_count(handle_t *handle, struct inode *inode)
 {
-        inode->i_nlink++;
+        inc_nlink(inode);
 }
 
 static inline void ext3_dec_count(handle_t *handle, struct inode *inode)
 {
-        inode->i_nlink--;
+        drop_nlink(inode);
 }
 
 static int ext3_add_nondir(handle_t *handle,
@@ -1742,7 +1743,7 @@ retry:
         inode->i_size = EXT3_I(inode)->i_disksize = inode->i_sb->s_blocksize;
         dir_block = ext3_bread (handle, inode, 0, 1, &err);
         if (!dir_block) {
-                inode->i_nlink--; /* is this nlink == 0? */
+                drop_nlink(inode); /* is this nlink == 0? */
                 ext3_mark_inode_dirty(handle, inode);
                 iput (inode);
                 goto out_stop;
@@ -1774,7 +1775,7 @@ retry:
                 iput (inode);
                 goto out_stop;
         }
-        dir->i_nlink++;
+        inc_nlink(dir);
         ext3_update_dx_flag(dir);
         ext3_mark_inode_dirty(handle, dir);
         d_instantiate(dentry, inode);
@@ -2044,7 +2045,7 @@ static int ext3_rmdir (struct inode * dir, struct dentry *dentry)
                               "empty directory has nlink!=2 (%d)",
                               inode->i_nlink);
         inode->i_version++;
-        inode->i_nlink = 0;
+        clear_nlink(inode);
         /* There's no need to set i_disksize: the fact that i_nlink is
          * zero will ensure that the right thing happens during any
          * recovery. */
@@ -2052,7 +2053,7 @@ static int ext3_rmdir (struct inode * dir, struct dentry *dentry)
         ext3_orphan_add(handle, inode);
         inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
         ext3_mark_inode_dirty(handle, inode);
-        dir->i_nlink--;
+        drop_nlink(dir);
         ext3_update_dx_flag(dir);
         ext3_mark_inode_dirty(handle, dir);
 
@@ -2103,7 +2104,7 @@ static int ext3_unlink(struct inode * dir, struct dentry *dentry)
         dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
         ext3_update_dx_flag(dir);
         ext3_mark_inode_dirty(handle, dir);
-        inode->i_nlink--;
+        drop_nlink(inode);
         if (!inode->i_nlink)
                 ext3_orphan_add(handle, inode);
         inode->i_ctime = dir->i_ctime;
@@ -2325,7 +2326,7 @@ static int ext3_rename (struct inode * old_dir, struct dentry *old_dentry,
         }
 
         if (new_inode) {
-                new_inode->i_nlink--;
+                drop_nlink(new_inode);
                 new_inode->i_ctime = CURRENT_TIME_SEC;
         }
         old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME_SEC;
@@ -2336,11 +2337,11 @@ static int ext3_rename (struct inode * old_dir, struct dentry *old_dentry,
                 PARENT_INO(dir_bh->b_data) = cpu_to_le32(new_dir->i_ino);
                 BUFFER_TRACE(dir_bh, "call ext3_journal_dirty_metadata");
                 ext3_journal_dirty_metadata(handle, dir_bh);
-                old_dir->i_nlink--;
+                drop_nlink(old_dir);
                 if (new_inode) {
-                        new_inode->i_nlink--;
+                        drop_nlink(new_inode);
                 } else {
-                        new_dir->i_nlink++;
+                        inc_nlink(new_dir);
                         ext3_update_dx_flag(new_dir);
                         ext3_mark_inode_dirty(handle, new_dir);
                 }