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 29efc390 ("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: 29efc390 ("md/md0: optimize raid0 discard handling") Fixes: 61697a6a ("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>
parent
cd746938
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