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block: add a bdev_limits helper

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Add a helper to get the queue_limits from the bdev without having to
poke into the request_queue.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241029141937.249920-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-10-29 15:19:37 +01:00 committed by Jens Axboe
parent e4e535bff2
commit 2f5a65ef30
7 changed files with 19 additions and 18 deletions
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3
block/blk-merge.c
View File

@ -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);

2
block/blk-settings.c
View File

@ -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);

4
drivers/md/dm-cache-target.c
View File

@ -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 */

4
drivers/md/dm-clone-target.c
View File

@ -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 */

2
drivers/md/dm-thin.c
View File

@ -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)

7
fs/btrfs/zoned.c
View File

@ -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);
}
/*

15
include/linux/blkdev.h
View File

@ -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)