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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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15
include/linux/blkdev.h
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@@ -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)