slub: list_locations() can use GFP_TEMPORARY

It's a short-lived allocation.

Cc: Christoph Lameter <clameter@sgi.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/slub.c

@@ -3285,7 +3285,7 @@ static int list_locations(struct kmem_cache *s, char *buf,
 	int node;
 
 	if (!alloc_loc_track(&t, PAGE_SIZE / sizeof(struct location),
-			GFP_KERNEL))
+			GFP_TEMPORARY))
 		return sprintf(buf, "Out of memory\n");
 
 	/* Push back cpu slabs */