From 1bcb1eada4f11a713cbe586d1b5a5d93a48277cb Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Thu, 25 Sep 2014 23:23:39 +0800 Subject: blk-mq: allocate flush_rq in blk_mq_init_flush() It is reasonable to allocate flush req in blk_mq_init_flush(). Reviewed-by: Christoph Hellwig Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-flush.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'block/blk-flush.c') diff --git a/block/blk-flush.c b/block/blk-flush.c index c8e25768f2e1..55028a707927 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -472,7 +472,16 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask, } EXPORT_SYMBOL(blkdev_issue_flush); -void blk_mq_init_flush(struct request_queue *q) +int blk_mq_init_flush(struct request_queue *q) { + struct blk_mq_tag_set *set = q->tag_set; + spin_lock_init(&q->mq_flush_lock); + + q->flush_rq = kzalloc(round_up(sizeof(struct request) + + set->cmd_size, cache_line_size()), + GFP_KERNEL); + if (!q->flush_rq) + return -ENOMEM; + return 0; } -- cgit v1.2.3-70-g09d2