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block: move the skip_tagset_quiesce flag to queue_limits

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Move the skip_tagset_quiesce flag into the queue_limits feature field so
that it can be set atomically with the queue frozen.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-26-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-06-17 08:04:52 +02:00 committed by Jens Axboe
parent 9c1e42e3c8
commit 8c8f5c85b2
3 changed files with 9 additions and 6 deletions
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1
block/blk-mq-debugfs.c
View file

@ -93,7 +93,6 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(RQ_ALLOC_TIME),
QUEUE_FLAG_NAME(HCTX_ACTIVE),
QUEUE_FLAG_NAME(SQ_SCHED),
QUEUE_FLAG_NAME(SKIP_TAGSET_QUIESCE),
};
#undef QUEUE_FLAG_NAME

8
drivers/nvme/host/core.c
View file

@ -4489,13 +4489,15 @@ int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set,
return ret;
if (ctrl->ops->flags & NVME_F_FABRICS) {
ctrl->connect_q = blk_mq_alloc_queue(set, NULL, NULL);
struct queue_limits lim = {
.features = BLK_FEAT_SKIP_TAGSET_QUIESCE,
};
ctrl->connect_q = blk_mq_alloc_queue(set, &lim, NULL);
if (IS_ERR(ctrl->connect_q)) {
ret = PTR_ERR(ctrl->connect_q);
goto out_free_tag_set;
}
blk_queue_flag_set(QUEUE_FLAG_SKIP_TAGSET_QUIESCE,
ctrl->connect_q);
}
ctrl->tagset = set;

6
include/linux/blkdev.h
View file

@ -322,6 +322,9 @@ enum {
/* supports PCI(e) p2p requests */
BLK_FEAT_PCI_P2PDMA = (1u << 12),
/* skip this queue in blk_mq_(un)quiesce_tagset */
BLK_FEAT_SKIP_TAGSET_QUIESCE = (1u << 13),
};
/*
@ -594,7 +597,6 @@ struct request_queue {
#define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */
#define QUEUE_FLAG_HCTX_ACTIVE 28 /* at least one blk-mq hctx is active */
#define QUEUE_FLAG_SQ_SCHED 30 /* single queue style io dispatch */
#define QUEUE_FLAG_SKIP_TAGSET_QUIESCE 31 /* quiesce_tagset skip the queue*/
#define QUEUE_FLAG_MQ_DEFAULT (1UL << QUEUE_FLAG_SAME_COMP)
@ -629,7 +631,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
#define blk_queue_registered(q) test_bit(QUEUE_FLAG_REGISTERED, &(q)->queue_flags)
#define blk_queue_sq_sched(q) test_bit(QUEUE_FLAG_SQ_SCHED, &(q)->queue_flags)
#define blk_queue_skip_tagset_quiesce(q) \
test_bit(QUEUE_FLAG_SKIP_TAGSET_QUIESCE, &(q)->queue_flags)
((q)->limits.features & BLK_FEAT_SKIP_TAGSET_QUIESCE)
extern void blk_set_pm_only(struct request_queue *q);
extern void blk_clear_pm_only(struct request_queue *q);