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block: move the dax flag to queue_limits

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Move the dax 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/20240617060532.127975-21-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2024-06-17 08:04:47 +02:00
committed by Jens Axboe
parent f76af42f8b
commit f467fee48d
5 changed files with 9 additions and 11 deletions
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include/linux/blkdev.h
+4 -2
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@@ -307,6 +307,9 @@ enum {
/* supports REQ_NOWAIT */
BLK_FEAT_NOWAIT = (1u << 7),
/* supports DAX */
BLK_FEAT_DAX = (1u << 8),
};
/*
@@ -575,7 +578,6 @@ struct request_queue {
#define QUEUE_FLAG_SAME_FORCE 12 /* force complete on same CPU */
#define QUEUE_FLAG_INIT_DONE 14 /* queue is initialized */
#define QUEUE_FLAG_POLL 16 /* IO polling enabled if set */
#define QUEUE_FLAG_DAX 19 /* device supports DAX */
#define QUEUE_FLAG_STATS 20 /* track IO start and completion times */
#define QUEUE_FLAG_REGISTERED 22 /* queue has been registered to a disk */
#define QUEUE_FLAG_QUIESCED 24 /* queue has been quiesced */
@@ -602,7 +604,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
#define blk_queue_io_stat(q) ((q)->limits.features & BLK_FEAT_IO_STAT)
#define blk_queue_zone_resetall(q) \
test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags)
#define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
#define blk_queue_dax(q) ((q)->limits.features & BLK_FEAT_DAX)
#define blk_queue_pci_p2pdma(q) \
test_bit(QUEUE_FLAG_PCI_P2PDMA, &(q)->queue_flags)
#ifdef CONFIG_BLK_RQ_ALLOC_TIME