[PATCH v4 2/2] blk-mq: use BLK_MQ_GFP_FLAGS macro instead

[xiubli@xxxxxxxxxx]

From: Xiubo Li <xiubli@xxxxxxxxxx>

There are at least 6 places are using the same combined GFP flags,
switch them to one macro instead to make the code get cleaner.

Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
 block/blk-mq.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 9c52e4dfe132..3d3b3e5787b0 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -39,6 +39,8 @@
 #include "blk-mq-sched.h"
 #include "blk-rq-qos.h"
 
+#define BLK_MQ_GFP_FLAGS (GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY)
+
 static void blk_mq_poll_stats_start(struct request_queue *q);
 static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb);
 
@@ -2091,21 +2093,19 @@ struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set,
 
 	tags = blk_mq_init_tags(nr_tags, reserved_tags, node,
 				BLK_MQ_FLAG_TO_ALLOC_POLICY(set->flags),
-				GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY);
+				BLK_MQ_GFP_FLAGS);
 	if (!tags)
 		return NULL;
 
 	tags->rqs = kcalloc_node(nr_tags, sizeof(struct request *),
-				 GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
-				 node);
+				 BLK_MQ_GFP_FLAGS, node);
 	if (!tags->rqs) {
 		blk_mq_free_tags(tags);
 		return NULL;
 	}
 
 	tags->static_rqs = kcalloc_node(nr_tags, sizeof(struct request *),
-					GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
-					node);
+					BLK_MQ_GFP_FLAGS, node);
 	if (!tags->static_rqs) {
 		kfree(tags->rqs);
 		blk_mq_free_tags(tags);
@@ -2167,7 +2167,7 @@ int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
 
 		do {
 			page = alloc_pages_node(node,
-				GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY | __GFP_ZERO,
+				BLK_MQ_GFP_FLAGS | __GFP_ZERO,
 				this_order);
 			if (page)
 				break;
@@ -2188,7 +2188,8 @@ int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
 		 * 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_NOIO);
+		kmemleak_alloc(p, order_to_size(this_order), 1,
+			       BLK_MQ_GFP_FLAGS);
 		entries_per_page = order_to_size(this_order) / rq_size;
 		to_do = min(entries_per_page, depth - i);
 		left -= to_do * rq_size;
@@ -2333,7 +2334,7 @@ blk_mq_alloc_hctx(struct request_queue *q, struct blk_mq_tag_set *set,
 		int node)
 {
 	struct blk_mq_hw_ctx *hctx;
-	gfp_t gfp = GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY;
+	gfp_t gfp = BLK_MQ_GFP_FLAGS;
 
 	hctx = kzalloc_node(blk_mq_hw_ctx_size(set), gfp, node);
 	if (!hctx)
@@ -3194,7 +3195,7 @@ static bool blk_mq_elv_switch_none(struct list_head *head,
 	if (!q->elevator)
 		return true;
 
-	qe = kmalloc(sizeof(*qe), GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY);
+	qe = kmalloc(sizeof(*qe), BLK_MQ_GFP_FLAGS);
 	if (!qe)
 		return false;
 
-- 
2.21.0