diff options
| author |   Denis Semakin <d.semakin@omprussia.ru> | 2018-03-13 13:23:45 +0400 |
|---|---|---|
| committer |   Mike Snitzer <snitzer@redhat.com> | 2018-04-03 15:04:21 -0400 |
| commit | 00716545c894fc464e00612809d9cb836b180c99 (patch) | |
| tree | 7492fc26be641c58a49b4c81ab707f60a597f629 /drivers/md/dm.c | |
| parent | dm: backfill abnormal IO support to non-splitting IO submission (diff) | |
| download | wireguard-linux-00716545c894fc464e00612809d9cb836b180c99.tar.xz wireguard-linux-00716545c894fc464e00612809d9cb836b180c99.zip | |
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 <d.semakin@omprussia.ru>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 12 |
1 files changed, 12 insertions, 0 deletions
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) |