blk-mq: Avoid memory reclaim when remapping queues

[mirror_ubuntu-zesty-kernel.git] / block / blk-mq.c

diff --git a/block/blk-mq.c b/block/blk-mq.c
index d79fdc11b1ee7de35a5a93d5659f231cc3e4fea3..7ad7c11fe01da9f74c976a974de47b40ab7bd4e5 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1605,7 +1605,7 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
        INIT_LIST_HEAD(&tags->page_list);
 
        tags->rqs = kzalloc_node(set->queue_depth * sizeof(struct request *),
-                                GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY,
+                                GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
                                 set->numa_node);
        if (!tags->rqs) {
                blk_mq_free_tags(tags);
@@ -1631,7 +1631,7 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
 
                do {
                        page = alloc_pages_node(set->numa_node,
-                               GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY | __GFP_ZERO,
+                               GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY | __GFP_ZERO,
                                this_order);
                        if (page)
                                break;
@@ -1652,7 +1652,7 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
                 * Allow kmemleak to scan these pages as they contain pointers
                 * to additional allocations like via ops->init_request().
                 */
-               kmemleak_alloc(p, order_to_size(this_order), 1, GFP_KERNEL);
+               kmemleak_alloc(p, order_to_size(this_order), 1, GFP_NOIO);
                entries_per_page = order_to_size(this_order) / rq_size;
                to_do = min(entries_per_page, set->queue_depth - i);
                left -= to_do * rq_size;