From 13f6facf3faeed34ca381aef4c9b153c7aed3972 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 14 Apr 2023 12:07:27 -0400 Subject: dm: allow targets to require splitting WRITE_ZEROES and SECURE_ERASE Introduce max_write_zeroes_granularity and max_secure_erase_granularity flags in the dm_target struct. If a target sets these then DM core will split IO of these operation types accordingly (in terms of max_write_zeroes_sectors and max_secure_erase_sectors respectively). Signed-off-by: Mike Snitzer --- include/linux/device-mapper.h | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'include/linux/device-mapper.h') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index f2d9afb8a7e9..983f1f0402b5 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -359,11 +359,23 @@ struct dm_target { bool discards_supported:1; /* - * Set if this target requires that discards be split on both - * 'discard_granularity' and 'max_discard_sectors' boundaries. + * Set if this target requires that discards be split on + * 'max_discard_sectors' boundaries. */ bool max_discard_granularity:1; + /* + * Set if this target requires that secure_erases be split on + * 'max_secure_erase_sectors' boundaries. + */ + bool max_secure_erase_granularity:1; + + /* + * Set if this target requires that write_zeroes be split on + * 'max_write_zeroes_sectors' boundaries. + */ + bool max_write_zeroes_granularity:1; + /* * Set if we need to limit the number of in-flight bios when swapping. */ -- cgit v1.2.3