[PATCH] mm/slub: avoid double string traverse in kmem_cache_flags()

[Yury Norov]

If ',' is not found, kmem_cache_flags() calls strlen() to find the end
of line. We can do it in a single pass using strchrnul().

Signed-off-by: Yury Norov <yno...@marvell.com>
---
 mm/slub.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 4922a0394757..85f90370a293 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1317,9 +1317,7 @@ slab_flags_t kmem_cache_flags(unsigned int object_size,
                char *end, *glob;
                size_t cmplen;
 
-               end = strchr(iter, ',');
-               if (!end)
-                       end = iter + strlen(iter);
+               end = strchrnul(iter, ',');
 
                glob = strnchr(iter, end - iter, '*');
                if (glob)
-- 
2.17.1