reiserfs: fix dereference of ERR_PTR

reiserfs_iget() returns either NULL or error code in ERR_PTR.  And we
were only checking for NULL, so in case of some other error we will try
to dereference the ERR_PTR(-errno) thinking it to be a valid pointer.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 05db7473bcb5c64078dc572d2ef8e455a770dbba..c0306ec8ed7b8f5d4eef97fd1cf4c7653c2b1f20 100644 (file)
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -288,7 +288,7 @@ static int finish_unfinished(struct super_block *s)
                pathrelse(&path);
 
                inode = reiserfs_iget(s, &obj_key);
-               if (!inode) {
+               if (IS_ERR_OR_NULL(inode)) {
                        /*
                         * the unlink almost completed, it just did not
                         * manage to remove "save" link and release objectid