slab: fix starting index for finding another object

In array cache, there is a object at index 0, check it.

Signed-off-by: Joonsoo Kim <[email protected]>
Signed-off-by: Mel Gorman <[email protected]>
Cc: David Miller <[email protected]>
Cc: Chuck Lever <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Pekka Enberg <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/slab.c b/mm/slab.c
index d34a9034f92968459b056d252484f33563275f51..c6854759bcf1e041d7a21781921ac45cfd2f5484 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -983,7 +983,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac,
                }
 
                /* The caller cannot use PFMEMALLOC objects, find another one */
-               for (i = 1; i < ac->avail; i++) {
+               for (i = 0; i < ac->avail; i++) {
                        /* If a !PFMEMALLOC object is found, swap them */
                        if (!is_obj_pfmemalloc(ac->entry[i])) {
                                objp = ac->entry[i];