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| author | Milan Broz <gmazyland@gmail.com> | 2017-01-04 20:23:51 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-03-07 13:28:32 -0500 |
| commit | 9b4b5a797cf8a8d904df979891a8de53f2cb9694 (patch) | |
| tree | d6d677b0fdb95886d7155d3f58978b4ee8249eec /include/linux/device-mapper.h | |
| parent | b29d4986d0da1a27cd35917cdb433672f5c95d7f (diff) | |
| download | lwn-9b4b5a797cf8a8d904df979891a8de53f2cb9694.tar.gz lwn-9b4b5a797cf8a8d904df979891a8de53f2cb9694.zip | |
dm table: add flag to allow target to handle its own integrity metadata
Add DM_TARGET_INTEGRITY flag that specifies bio integrity metadata is
not inherited but implemented in the target itself.
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'include/linux/device-mapper.h')
| -rw-r--r-- | include/linux/device-mapper.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index a7e6903866fd..874462153f14 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -221,6 +221,12 @@ struct target_type { */ typedef unsigned (*dm_num_write_bios_fn) (struct dm_target *ti, struct bio *bio); +/* + * A target implements own bio data integrity. + */ +#define DM_TARGET_INTEGRITY 0x00000010 +#define dm_target_has_integrity(type) ((type)->features & DM_TARGET_INTEGRITY) + struct dm_target { struct dm_table *table; struct target_type *type; |