[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>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index b45c88bd5f73..906731a20f1a 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -2045,7 +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. */