diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-rq-qos.h | 13 | ||||
| -rw-r--r-- | block/blk-zoned.c | 11 |
2 files changed, 14 insertions, 10 deletions
diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h index 1fe22000a379..b538f2c0febc 100644 --- a/block/blk-rq-qos.h +++ b/block/blk-rq-qos.h @@ -149,12 +149,15 @@ static inline void rq_qos_done_bio(struct bio *bio) q = bdev_get_queue(bio->bi_bdev); /* - * If a bio has BIO_QOS_xxx set, it implicitly implies that - * q->rq_qos is present. So, we skip re-checking q->rq_qos - * here as an extra optimization and directly call - * __rq_qos_done_bio(). + * A BIO may carry BIO_QOS_* flags even if the associated request_queue + * does not have rq_qos enabled. This can happen with stacked block + * devices — for example, NVMe multipath, where it's possible that the + * bottom device has QoS enabled but the top device does not. Therefore, + * always verify that q->rq_qos is present and QoS is enabled before + * calling __rq_qos_done_bio(). */ - __rq_qos_done_bio(q->rq_qos, bio); + if (test_bit(QUEUE_FLAG_QOS_ENABLED, &q->queue_flags) && q->rq_qos) + __rq_qos_done_bio(q->rq_qos, bio); } static inline void rq_qos_throttle(struct request_queue *q, struct bio *bio) diff --git a/block/blk-zoned.c b/block/blk-zoned.c index ef43aaca49f4..5e2a5788dc3b 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -1286,14 +1286,14 @@ static void blk_zone_wplug_bio_work(struct work_struct *work) struct block_device *bdev; unsigned long flags; struct bio *bio; + bool prepared; /* * Submit the next plugged BIO. If we do not have any, clear * the plugged flag. */ - spin_lock_irqsave(&zwplug->lock, flags); - again: + spin_lock_irqsave(&zwplug->lock, flags); bio = bio_list_pop(&zwplug->bio_list); if (!bio) { zwplug->flags &= ~BLK_ZONE_WPLUG_PLUGGED; @@ -1304,13 +1304,14 @@ again: trace_blk_zone_wplug_bio(zwplug->disk->queue, zwplug->zone_no, bio->bi_iter.bi_sector, bio_sectors(bio)); - if (!blk_zone_wplug_prepare_bio(zwplug, bio)) { + prepared = blk_zone_wplug_prepare_bio(zwplug, bio); + spin_unlock_irqrestore(&zwplug->lock, flags); + + if (!prepared) { blk_zone_wplug_bio_io_error(zwplug, bio); goto again; } - spin_unlock_irqrestore(&zwplug->lock, flags); - bdev = bio->bi_bdev; /* |