Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-24 21:21:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

block: Add bdev atomic write limits helpers

Browse Source 
Add helpers to get atomic write limits for a bdev, so that we don't access
request_queue helpers outside the block layer.

We check if the bdev can actually atomic write in these helpers, so we
can avoid users missing using this check.

Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241019125113.369994-4-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
John Garry 2024-10-19 12:51:08 +00:00 committed by Jens Axboe
parent c3be7ebbbc
commit 1eadb15794
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
include/linux/blkdev.h
View File

@ -1674,6 +1674,22 @@ static inline bool bdev_can_atomic_write(struct block_device *bdev)
return true;
}
static inline unsigned int
bdev_atomic_write_unit_min_bytes(struct block_device *bdev)
{
if (!bdev_can_atomic_write(bdev))
return 0;
return queue_atomic_write_unit_min_bytes(bdev_get_queue(bdev));
}
static inline unsigned int
bdev_atomic_write_unit_max_bytes(struct block_device *bdev)
{
if (!bdev_can_atomic_write(bdev))
return 0;
return queue_atomic_write_unit_max_bytes(bdev_get_queue(bdev));
}
#define DEFINE_IO_COMP_BATCH(name) struct io_comp_batch name = { }
#endif /* _LINUX_BLKDEV_H */