Commit 7ddab5de authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe
Browse files

block: avoid to use q->flush_rq directly



This patch trys to use local variable to access flush request,
so that we can convert to per-queue flush machinery a bit easier.
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarMing Lei <ming.lei@canonical.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 3c09676c
......@@ -223,7 +223,7 @@ static void flush_end_io(struct request *flush_rq, int error)
if (q->mq_ops) {
spin_lock_irqsave(&q->mq_flush_lock, flags);
q->flush_rq->tag = -1;
flush_rq->tag = -1;
}
running = &q->flush_queue[q->flush_running_idx];
......@@ -281,6 +281,7 @@ static bool blk_kick_flush(struct request_queue *q)
struct list_head *pending = &q->flush_queue[q->flush_pending_idx];
struct request *first_rq =
list_first_entry(pending, struct request, flush.list);
struct request *flush_rq = q->flush_rq;
/* C1 described at the top of this file */
if (q->flush_pending_idx != q->flush_running_idx || list_empty(pending))
......@@ -298,16 +299,16 @@ static bool blk_kick_flush(struct request_queue *q)
*/
q->flush_pending_idx ^= 1;
blk_rq_init(q, q->flush_rq);
blk_rq_init(q, flush_rq);
if (q->mq_ops)
blk_mq_clone_flush_request(q->flush_rq, first_rq);
blk_mq_clone_flush_request(flush_rq, first_rq);
q->flush_rq->cmd_type = REQ_TYPE_FS;
q->flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ;
q->flush_rq->rq_disk = first_rq->rq_disk;
q->flush_rq->end_io = flush_end_io;
flush_rq->cmd_type = REQ_TYPE_FS;
flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ;
flush_rq->rq_disk = first_rq->rq_disk;
flush_rq->end_io = flush_end_io;
return blk_flush_queue_rq(q->flush_rq, false);
return blk_flush_queue_rq(flush_rq, false);
}
static void flush_data_end_io(struct request *rq, int error)
......
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