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authorDave Hansen <haveblue@us.ibm.com>2006-09-30 23:29:03 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-01 00:39:30 -0700
commit9a53c3a783c2fa9b969628e65695c11c3e51e673 (patch)
tree5a6115e18ee105246d46e3db3d5b07749d232f5b /fs/hpfs
parentaab520e2f6c80160cabd187a8d0292d1cec8ff68 (diff)
downloadblackbird-op-linux-9a53c3a783c2fa9b969628e65695c11c3e51e673.tar.gz
blackbird-op-linux-9a53c3a783c2fa9b969628e65695c11c3e51e673.zip
[PATCH] r/o bind mounts: unlink: monitor i_nlink
When a filesystem decrements i_nlink to zero, it means that a write must be performed in order to drop the inode from the filesystem. We're shortly going to have keep filesystems from being remounted r/o between the time that this i_nlink decrement and that write occurs. So, add a little helper function to do the decrements. We'll tie into it in a bit to note when i_nlink hits zero. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/hpfs')
-rw-r--r--fs/hpfs/namei.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 59e7dc182a0c..4078b0becc5e 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -434,7 +434,7 @@ again:
unlock_kernel();
return -ENOSPC;
default:
- inode->i_nlink--;
+ drop_nlink(inode);
err = 0;
}
goto out;
@@ -494,7 +494,7 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
err = -ENOSPC;
break;
default:
- dir->i_nlink--;
+ drop_nlink(dir);
inode->i_nlink = 0;
err = 0;
}
@@ -636,7 +636,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
hpfs_i(i)->i_parent_dir = new_dir->i_ino;
if (S_ISDIR(i->i_mode)) {
new_dir->i_nlink++;
- old_dir->i_nlink--;
+ drop_nlink(old_dir);
}
if ((fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) {
fnode->up = new_dir->i_ino;
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