From 19821fee3ed42e5b294e95814892d0ad6a9890c9 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 17 May 2023 10:42:23 -0700 Subject: block: Introduce blk_rq_is_seq_zoned_write() Introduce the function blk_rq_is_seq_zoned_write(). This function will be used in later patches to preserve the order of zoned writes that require write serialization. This patch includes an optimization: instead of using rq->q->disk->part0->bd_queue to check whether or not the queue is associated with a zoned block device, use rq->q->disk->queue. Cc: Christoph Hellwig Cc: Damien Le Moal Cc: Ming Lei Signed-off-by: Bart Van Assche Reviewed-by: Damien Le Moal Link: https://lore.kernel.org/r/20230517174230.897144-6-bvanassche@acm.org Signed-off-by: Jens Axboe --- block/blk-zoned.c | 5 +---- include/linux/blk-mq.h | 17 +++++++++++++++++ 2 files changed, 18 insertions(+), 4 deletions(-) diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 835d9e937d4d..096b6b47561f 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -60,10 +60,7 @@ bool blk_req_needs_zone_write_lock(struct request *rq) if (!rq->q->disk->seq_zones_wlock) return false; - if (bdev_op_is_zoned_write(rq->q->disk->part0, req_op(rq))) - return blk_rq_zone_is_seq(rq); - - return false; + return blk_rq_is_seq_zoned_write(rq); } EXPORT_SYMBOL_GPL(blk_req_needs_zone_write_lock); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index e4a211957db6..49d14b1acfa5 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -1164,6 +1164,18 @@ static inline unsigned int blk_rq_zone_is_seq(struct request *rq) return disk_zone_is_seq(rq->q->disk, blk_rq_pos(rq)); } +/** + * blk_rq_is_seq_zoned_write() - Check if @rq requires write serialization. + * @rq: Request to examine. + * + * Note: REQ_OP_ZONE_APPEND requests do not require serialization. + */ +static inline bool blk_rq_is_seq_zoned_write(struct request *rq) +{ + return op_needs_zoned_write_locking(req_op(rq)) && + blk_rq_zone_is_seq(rq); +} + bool blk_req_needs_zone_write_lock(struct request *rq); bool blk_req_zone_write_trylock(struct request *rq); void __blk_req_zone_write_lock(struct request *rq); @@ -1194,6 +1206,11 @@ static inline bool blk_req_can_dispatch_to_zone(struct request *rq) return !blk_req_zone_is_write_locked(rq); } #else /* CONFIG_BLK_DEV_ZONED */ +static inline bool blk_rq_is_seq_zoned_write(struct request *rq) +{ + return false; +} + static inline bool blk_req_needs_zone_write_lock(struct request *rq) { return false; -- cgit