diff options
| author | John Garry <john.g.garry@oracle.com> | 2025-01-16 17:02:54 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-01-17 13:13:54 -0700 |
| commit | 6a7e17b22062c84a111d7073c67cc677c4190f32 (patch) | |
| tree | 026dc093971a5d76320eb40b9a8e456224756928 /include/linux/blkdev.h | |
| parent | 63492a2d7e2826f94e524e551b1abb3b32c55bca (diff) | |
block: Add common atomic writes enable flag
Currently only stacked devices need to explicitly enable atomic writes by
setting BLK_FEAT_ATOMIC_WRITES_STACKED flag.
This does not work well for device mapper stacking devices, as there many
sets of limits are stacked and what is the 'bottom' and 'top' device can
swapped. This means that BLK_FEAT_ATOMIC_WRITES_STACKED needs to be set
for many queue limits, which is messy.
Generalize enabling atomic writes enabling by ensuring that all devices
must explicitly set a flag - that includes NVMe, SCSI sd, and md raid.
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
Link: https://lore.kernel.org/r/20250116170301.474130-2-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 7ac153e4423a..76f0a4e7c2e5 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -331,8 +331,8 @@ typedef unsigned int __bitwise blk_features_t; #define BLK_FEAT_RAID_PARTIAL_STRIPES_EXPENSIVE \ ((__force blk_features_t)(1u << 15)) -/* stacked device can/does support atomic writes */ -#define BLK_FEAT_ATOMIC_WRITES_STACKED \ +/* atomic writes enabled */ +#define BLK_FEAT_ATOMIC_WRITES \ ((__force blk_features_t)(1u << 16)) /* |