UBIFS: signedness bug in ubifs_shrink_count()

We test "clean_zn_cnt" for negative later in the function.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Glauber Costa <glommer@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/ubifs/shrinker.c b/fs/ubifs/shrinker.c
index 68ce39965f0fc0ece7e44cce442a08928fe243c8..f35135e28e96f11913e8727983c80f7ba77e2956 100644 (file)
--- a/fs/ubifs/shrinker.c
+++ b/fs/ubifs/shrinker.c
@@ -280,7 +280,7 @@ static int kick_a_thread(void)
 unsigned long ubifs_shrink_count(struct shrinker *shrink,
                                 struct shrink_control *sc)
 {
-       unsigned long clean_zn_cnt = atomic_long_read(&ubifs_clean_zn_cnt);
+       long clean_zn_cnt = atomic_long_read(&ubifs_clean_zn_cnt);
 
        /*
         * Due to the way UBIFS updates the clean znode counter it may