[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, 2 insertions, 2 deletions

diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 99b4ed1b87d2..7e309751645f 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -348,7 +348,7 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
                 } else
                         inode->i_flags |= S_DEAD;
         } else
-                inode->i_nlink = 0;
+                clear_nlink(inode);
         inode->i_ctime = CURRENT_TIME_SEC;
         mark_inode_dirty(inode);
 
@@ -387,7 +387,7 @@ static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry)
         res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
         if (res)
                 return res;
-        inode->i_nlink = 0;
+        clear_nlink(inode);
         inode->i_ctime = CURRENT_TIME_SEC;
         hfsplus_delete_inode(inode);
         mark_inode_dirty(inode);