From 9b4b5a797cf8a8d904df979891a8de53f2cb9694 Mon Sep 17 00:00:00 2001 From: Milan Broz Date: Wed, 4 Jan 2017 20:23:51 +0100 Subject: 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 Signed-off-by: Mike Snitzer --- include/linux/device-mapper.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux/device-mapper.h') 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; -- cgit v1.2.3-59-g8ed1b