diff options
| author | Mike Snitzer <snitzer@kernel.org> | 2023-03-01 12:48:43 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2023-03-30 15:57:50 -0400 |
| commit | 06961c487a33a222fd3d84998dc6398ed0449373 (patch) | |
| tree | ce2512c7db900e8f3a92fc1e13502162701ba079 /include/uapi/linux | |
| parent | bb46c56165faf284cf42c197317bff24f899835a (diff) | |
dm: split discards further if target sets max_discard_granularity
The block core (bio_split_discard) will already split discards based
on the 'discard_granularity' and 'max_discard_sectors' queue_limits.
But the DM thin target also needs to ensure that it doesn't receive a
discard that spans a 'max_discard_sectors' boundary.
Introduce a dm_target 'max_discard_granularity' flag that if set will
cause DM core to split discard bios relative to 'max_discard_sectors'.
This treats 'discard_granularity' as a "min_discard_granularity" and
'max_discard_sectors' as a "max_discard_granularity".
Requested-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/dm-ioctl.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/uapi/linux/dm-ioctl.h b/include/uapi/linux/dm-ioctl.h index 7edf335778ba..1990b5700f69 100644 --- a/include/uapi/linux/dm-ioctl.h +++ b/include/uapi/linux/dm-ioctl.h @@ -286,9 +286,9 @@ enum { #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl) #define DM_VERSION_MAJOR 4 -#define DM_VERSION_MINOR 47 +#define DM_VERSION_MINOR 48 #define DM_VERSION_PATCHLEVEL 0 -#define DM_VERSION_EXTRA "-ioctl (2022-07-28)" +#define DM_VERSION_EXTRA "-ioctl (2023-03-01)" /* Status bits */ #define DM_READONLY_FLAG (1 << 0) /* In/Out */ |