From: Christoph Hellwig Date: Wed, 22 Mar 2017 19:01:49 +0000 (-0400) Subject: blk-mq: remove BLK_MQ_F_DEFER_ISSUE X-Git-Tag: v4.12-rc1~175^2~283 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7642747d674aff1f7cfe74ad9af7e9b12ab1d5ee;p=karo-tx-linux.git blk-mq: remove BLK_MQ_F_DEFER_ISSUE This flag was never used since it was introduced. Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe --- diff --git a/block/blk-mq.c b/block/blk-mq.c index 5ff66f203cd0..998c041358f2 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1531,13 +1531,7 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) } plug = current->plug; - /* - * If the driver supports defer issued based on 'last', then - * queue it up like normal since we can potentially save some - * CPU this way. - */ - if (((plug && !blk_queue_nomerges(q)) || is_sync) && - !(data.hctx->flags & BLK_MQ_F_DEFER_ISSUE)) { + if (((plug && !blk_queue_nomerges(q)) || is_sync)) { struct request *old_rq = NULL; blk_mq_bio_to_request(rq, bio); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index b296a9006117..5b3e201c8d4f 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -152,7 +152,6 @@ enum { BLK_MQ_F_SHOULD_MERGE = 1 << 0, BLK_MQ_F_TAG_SHARED = 1 << 1, BLK_MQ_F_SG_MERGE = 1 << 2, - BLK_MQ_F_DEFER_ISSUE = 1 << 4, BLK_MQ_F_BLOCKING = 1 << 5, BLK_MQ_F_NO_SCHED = 1 << 6, BLK_MQ_F_ALLOC_POLICY_START_BIT = 8,