From 00716545c894fc464e00612809d9cb836b180c99 Mon Sep 17 00:00:00 2001 From: Denis Semakin Date: Tue, 13 Mar 2018 13:23:45 +0400 Subject: dm: add support for secure erase forwarding Set QUEUE_FLAG_SECERASE in DM device's queue_flags if a DM table's data devices support secure erase. Also, add support for secure erase to both the linear and striped targets. Signed-off-by: Denis Semakin Signed-off-by: Mike Snitzer --- drivers/md/dm.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/md/dm.c') diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 038c7572fdd4..3b3cbd1a1659 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1414,6 +1414,11 @@ static unsigned get_num_discard_bios(struct dm_target *ti) return ti->num_discard_bios; } +static unsigned get_num_secure_erase_bios(struct dm_target *ti) +{ + return ti->num_secure_erase_bios; +} + static unsigned get_num_write_same_bios(struct dm_target *ti) { return ti->num_write_same_bios; @@ -1467,6 +1472,11 @@ static int __send_discard(struct clone_info *ci, struct dm_target *ti) is_split_required_for_discard); } +static int __send_secure_erase(struct clone_info *ci, struct dm_target *ti) +{ + return __send_changing_extent_only(ci, ti, get_num_secure_erase_bios, NULL); +} + static int __send_write_same(struct clone_info *ci, struct dm_target *ti) { return __send_changing_extent_only(ci, ti, get_num_write_same_bios, NULL); @@ -1484,6 +1494,8 @@ static bool __process_abnormal_io(struct clone_info *ci, struct dm_target *ti, if (bio_op(bio) == REQ_OP_DISCARD) *result = __send_discard(ci, ti); + else if (bio_op(bio) == REQ_OP_SECURE_ERASE) + *result = __send_secure_erase(ci, ti); else if (bio_op(bio) == REQ_OP_WRITE_SAME) *result = __send_write_same(ci, ti); else if (bio_op(bio) == REQ_OP_WRITE_ZEROES) -- cgit v1.2.3