From 347bde9da10f410b8134a82d6096105cad44e1c1 Mon Sep 17 00:00:00 2001 From: Damien Le Moal Date: Wed, 1 May 2024 20:09:04 +0900 Subject: [PATCH] block: Improve zone write request completion handling blk_zone_complete_request() must be called to handle the completion of a zone write request handled with zone write plugging. This function is called from blk_complete_request(), blk_update_request() and also in blk_mq_submit_bio() error path. Improve this by moving this function call into blk_mq_finish_request() as all requests are processed with this function when they complete as well as when they are freed without being executed. This also improves blk_update_request() used by scsi devices as these may repeatedly call this function to handle partial completions. To be consistent with this change, blk_zone_complete_request() is renamed to blk_zone_finish_request() and blk_zone_write_plug_complete_request() is renamed to blk_zone_write_plug_finish_request(). Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20240501110907.96950-12-dlemoal@kernel.org Signed-off-by: Jens Axboe --- block/blk-mq.c | 6 ++---- block/blk-zoned.c | 11 ++++++----- block/blk.h | 8 ++++---- 3 files changed, 12 insertions(+), 13 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 0fae9bd0ecd4..9f677ea85a52 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -691,6 +691,8 @@ static void blk_mq_finish_request(struct request *rq) { struct request_queue *q = rq->q; + blk_zone_finish_request(rq); + if (rq->rq_flags & RQF_USE_SCHED) { q->elevator->type->ops.finish_request(rq); /* @@ -828,8 +830,6 @@ static void blk_complete_request(struct request *req) bio = next; } while (bio); - blk_zone_complete_request(req); - /* * Reset counters so that the request stacking driver * can find how many bytes remain in the request @@ -940,7 +940,6 @@ bool blk_update_request(struct request *req, blk_status_t error, * completely done */ if (!req->bio) { - blk_zone_complete_request(req); /* * Reset counters so that the request stacking driver * can find how many bytes remain in the request @@ -2996,7 +2995,6 @@ new_request: if (ret != BLK_STS_OK) { bio->bi_status = ret; bio_endio(bio); - blk_zone_complete_request(rq); blk_mq_free_request(rq); return; } diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 1890b6d55d8b..759e85e9167c 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -531,7 +531,7 @@ static inline bool disk_should_remove_zone_wplug(struct gendisk *disk, /* * Completions of BIOs with blk_zone_write_plug_bio_endio() may * happen after handling a request completion with - * blk_zone_write_plug_complete_request() (e.g. with split BIOs + * blk_zone_write_plug_finish_request() (e.g. with split BIOs * that are chained). In such case, disk_zone_wplug_unplug_bio() * should not attempt to remove the zone write plug until all BIO * completions are seen. Check by looking at the zone write plug @@ -921,7 +921,7 @@ void blk_zone_write_plug_init_request(struct request *req) /* * Indicate that completion of this request needs to be handled with - * blk_zone_write_plug_complete_request(), which will drop the reference + * blk_zone_write_plug_finish_request(), which will drop the reference * on the zone write plug we took above on entry to this function. */ req->rq_flags |= RQF_ZONE_WRITE_PLUGGING; @@ -1255,7 +1255,7 @@ void blk_zone_write_plug_bio_endio(struct bio *bio) disk_put_zone_wplug(zwplug); /* - * For BIO-based devices, blk_zone_write_plug_complete_request() + * For BIO-based devices, blk_zone_write_plug_finish_request() * is not called. So we need to schedule execution of the next * plugged BIO here. */ @@ -1266,11 +1266,12 @@ void blk_zone_write_plug_bio_endio(struct bio *bio) disk_put_zone_wplug(zwplug); } -void blk_zone_write_plug_complete_request(struct request *req) +void blk_zone_write_plug_finish_request(struct request *req) { struct gendisk *disk = req->q->disk; - struct blk_zone_wplug *zwplug = disk_get_zone_wplug(disk, req->__sector); + struct blk_zone_wplug *zwplug; + zwplug = disk_get_zone_wplug(disk, req->__sector); if (WARN_ON_ONCE(!zwplug)) return; diff --git a/block/blk.h b/block/blk.h index 8a62b861453c..ee4f782d1496 100644 --- a/block/blk.h +++ b/block/blk.h @@ -453,11 +453,11 @@ static inline void blk_zone_bio_endio(struct bio *bio) blk_zone_write_plug_bio_endio(bio); } -void blk_zone_write_plug_complete_request(struct request *rq); -static inline void blk_zone_complete_request(struct request *rq) +void blk_zone_write_plug_finish_request(struct request *rq); +static inline void blk_zone_finish_request(struct request *rq) { if (rq->rq_flags & RQF_ZONE_WRITE_PLUGGING) - blk_zone_write_plug_complete_request(rq); + blk_zone_write_plug_finish_request(rq); } int blkdev_report_zones_ioctl(struct block_device *bdev, unsigned int cmd, unsigned long arg); @@ -491,7 +491,7 @@ static inline void blk_zone_update_request_bio(struct request *rq, static inline void blk_zone_bio_endio(struct bio *bio) { } -static inline void blk_zone_complete_request(struct request *rq) +static inline void blk_zone_finish_request(struct request *rq) { } static inline int blkdev_report_zones_ioctl(struct block_device *bdev,