From 2f5a65ef30a636d5030917eebd283ac447a212af Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 29 Oct 2024 15:19:37 +0100 Subject: [PATCH] block: add a bdev_limits helper Add a helper to get the queue_limits from the bdev without having to poke into the request_queue. Signed-off-by: Christoph Hellwig Reviewed-by: John Garry Link: https://lore.kernel.org/r/20241029141937.249920-1-hch@lst.de Signed-off-by: Jens Axboe --- block/blk-merge.c | 3 +-- block/blk-settings.c | 2 +- drivers/md/dm-cache-target.c | 4 ++-- drivers/md/dm-clone-target.c | 4 ++-- drivers/md/dm-thin.c | 2 +- fs/btrfs/zoned.c | 7 ++----- include/linux/blkdev.h | 15 ++++++++++----- 7 files changed, 19 insertions(+), 18 deletions(-) diff --git a/block/blk-merge.c b/block/blk-merge.c index 8b9a9646aed8..d813d799cee7 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -411,10 +411,9 @@ struct bio *bio_split_zone_append(struct bio *bio, */ struct bio *bio_split_to_limits(struct bio *bio) { - const struct queue_limits *lim = &bdev_get_queue(bio->bi_bdev)->limits; unsigned int nr_segs; - return __bio_split_to_limits(bio, lim, &nr_segs); + return __bio_split_to_limits(bio, bdev_limits(bio->bi_bdev), &nr_segs); } EXPORT_SYMBOL(bio_split_to_limits); diff --git a/block/blk-settings.c b/block/blk-settings.c index a446654ddee5..95fc39d09872 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -661,7 +661,7 @@ EXPORT_SYMBOL(blk_stack_limits); void queue_limits_stack_bdev(struct queue_limits *t, struct block_device *bdev, sector_t offset, const char *pfx) { - if (blk_stack_limits(t, &bdev_get_queue(bdev)->limits, + if (blk_stack_limits(t, bdev_limits(bdev), get_start_sect(bdev) + offset)) pr_notice("%s: Warning: Device %pg is misaligned\n", pfx, bdev); diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index aaeeabfab09b..c4520ff7fe1a 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -3360,7 +3360,7 @@ static int cache_iterate_devices(struct dm_target *ti, static void disable_passdown_if_not_supported(struct cache *cache) { struct block_device *origin_bdev = cache->origin_dev->bdev; - struct queue_limits *origin_limits = &bdev_get_queue(origin_bdev)->limits; + struct queue_limits *origin_limits = bdev_limits(origin_bdev); const char *reason = NULL; if (!cache->features.discard_passdown) @@ -3382,7 +3382,7 @@ static void disable_passdown_if_not_supported(struct cache *cache) static void set_discard_limits(struct cache *cache, struct queue_limits *limits) { struct block_device *origin_bdev = cache->origin_dev->bdev; - struct queue_limits *origin_limits = &bdev_get_queue(origin_bdev)->limits; + struct queue_limits *origin_limits = bdev_limits(origin_bdev); if (!cache->features.discard_passdown) { /* No passdown is done so setting own virtual limits */ diff --git a/drivers/md/dm-clone-target.c b/drivers/md/dm-clone-target.c index 12bbe487a4c8..e956d980672c 100644 --- a/drivers/md/dm-clone-target.c +++ b/drivers/md/dm-clone-target.c @@ -2020,7 +2020,7 @@ static void clone_resume(struct dm_target *ti) static void disable_passdown_if_not_supported(struct clone *clone) { struct block_device *dest_dev = clone->dest_dev->bdev; - struct queue_limits *dest_limits = &bdev_get_queue(dest_dev)->limits; + struct queue_limits *dest_limits = bdev_limits(dest_dev); const char *reason = NULL; if (!test_bit(DM_CLONE_DISCARD_PASSDOWN, &clone->flags)) @@ -2041,7 +2041,7 @@ static void disable_passdown_if_not_supported(struct clone *clone) static void set_discard_limits(struct clone *clone, struct queue_limits *limits) { struct block_device *dest_bdev = clone->dest_dev->bdev; - struct queue_limits *dest_limits = &bdev_get_queue(dest_bdev)->limits; + struct queue_limits *dest_limits = bdev_limits(dest_bdev); if (!test_bit(DM_CLONE_DISCARD_PASSDOWN, &clone->flags)) { /* No passdown is done so we set our own virtual limits */ diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 89632ce97760..9095f19a84f3 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2842,7 +2842,7 @@ static void disable_discard_passdown_if_not_supported(struct pool_c *pt) { struct pool *pool = pt->pool; struct block_device *data_bdev = pt->data_dev->bdev; - struct queue_limits *data_limits = &bdev_get_queue(data_bdev)->limits; + struct queue_limits *data_limits = bdev_limits(data_bdev); const char *reason = NULL; if (!pt->adjusted_pf.discard_passdown) diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 69d03feea4e0..46b9386957e6 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -707,11 +707,8 @@ int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info) * zoned mode. In this case, we don't have a valid max zone * append size. */ - if (bdev_is_zoned(device->bdev)) { - blk_stack_limits(lim, - &bdev_get_queue(device->bdev)->limits, - 0); - } + if (bdev_is_zoned(device->bdev)) + blk_stack_limits(lim, bdev_limits(device->bdev), 0); } /* diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index d0a52ed05e60..7bfc877e159e 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1159,6 +1159,11 @@ enum blk_default_limits { */ #define BLK_DEF_MAX_SECTORS_CAP 2560u +static inline struct queue_limits *bdev_limits(struct block_device *bdev) +{ + return &bdev_get_queue(bdev)->limits; +} + static inline unsigned long queue_segment_boundary(const struct request_queue *q) { return q->limits.seg_boundary_mask; @@ -1293,23 +1298,23 @@ unsigned int bdev_discard_alignment(struct block_device *bdev); static inline unsigned int bdev_max_discard_sectors(struct block_device *bdev) { - return bdev_get_queue(bdev)->limits.max_discard_sectors; + return bdev_limits(bdev)->max_discard_sectors; } static inline unsigned int bdev_discard_granularity(struct block_device *bdev) { - return bdev_get_queue(bdev)->limits.discard_granularity; + return bdev_limits(bdev)->discard_granularity; } static inline unsigned int bdev_max_secure_erase_sectors(struct block_device *bdev) { - return bdev_get_queue(bdev)->limits.max_secure_erase_sectors; + return bdev_limits(bdev)->max_secure_erase_sectors; } static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev) { - return bdev_get_queue(bdev)->limits.max_write_zeroes_sectors; + return bdev_limits(bdev)->max_write_zeroes_sectors; } static inline bool bdev_nonrot(struct block_device *bdev) @@ -1345,7 +1350,7 @@ static inline bool bdev_write_cache(struct block_device *bdev) static inline bool bdev_fua(struct block_device *bdev) { - return bdev_get_queue(bdev)->limits.features & BLK_FEAT_FUA; + return bdev_limits(bdev)->features & BLK_FEAT_FUA; } static inline bool bdev_nowait(struct block_device *bdev)