]> git.baikalelectronics.ru Git - kernel.git/commit
dm raid: fix discard limits for raid1 and raid10
authorMike Snitzer <snitzer@redhat.com>
Thu, 24 Sep 2020 17:14:52 +0000 (13:14 -0400)
committerMike Snitzer <snitzer@redhat.com>
Tue, 29 Sep 2020 20:33:09 +0000 (16:33 -0400)
commitbea62e47b6af9894ed93b41691a7d802b208356e
treeb6d44bcf12053cbae7c1bff100929717004271d0
parentb6c29ffa57ad6dbf179ea8b2e33e1440feacfbcc
dm raid: fix discard limits for raid1 and raid10

Block core warned that discard_granularity was 0 for dm-raid with
personality of raid1.  Reason is that raid_io_hints() was incorrectly
special-casing raid1 rather than raid0.

But since commit 03fdb4f48b769 ("md/md0: optimize raid0 discard
handling") even raid0 properly handles large discards.

Fix raid_io_hints() by removing discard limits settings for raid1.
Also, fix limits for raid10 by properly stacking underlying limits as
done in blk_stack_limits().

Depends-on: 03fdb4f48b769 ("md/md0: optimize raid0 discard handling")
Fixes: a0b8e6c11bbb7 ("dm: eliminate 'split_discard_bios' flag from DM target interface")
Cc: stable@vger.kernel.org
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-raid.c