[PATCH] r/o bind mounts: monitor zeroing of i_nlink
Some filesystems, instead of simply decrementing i_nlink, simply zero it
during an unlink operation. We need to catch these in addition to the
decrement operations.
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>
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index cf92e89..16e9cff 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -913,7 +913,7 @@
reiserfs_warning(inode->i_sb, "%s: empty directory has nlink "
"!= 2 (%d)", __FUNCTION__, inode->i_nlink);
- inode->i_nlink = 0;
+ clear_nlink(inode);
inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
reiserfs_update_sd(&th, inode);
@@ -1473,7 +1473,7 @@
if (new_dentry_inode) {
// adjust link number of the victim
if (S_ISDIR(new_dentry_inode->i_mode)) {
- new_dentry_inode->i_nlink = 0;
+ clear_nlink(new_dentry_inode);
} else {
drop_nlink(new_dentry_inode);
}