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dm raid: fix discard limits for raid1
commit cc07d72bf350b77faeffee1c37bc52197171473f upstream.
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.
Fix raid_io_hints() by removing discard limits settings for
raid1. Check for raid0 instead.
Fixes: 61697a6abd
("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>
Reported-by: Stephan Bärwolf <stephan@matrixstorm.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
ccd903e267
commit
5de4f3a301
@ -3730,10 +3730,10 @@ static void raid_io_hints(struct dm_target *ti, struct queue_limits *limits)
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blk_limits_io_opt(limits, chunk_size_bytes * mddev_data_stripes(rs));
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/*
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* RAID1 and RAID10 personalities require bio splitting,
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* RAID0/4/5/6 don't and process large discard bios properly.
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* RAID0 and RAID10 personalities require bio splitting,
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* RAID1/4/5/6 don't and process large discard bios properly.
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*/
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if (rs_is_raid1(rs) || rs_is_raid10(rs)) {
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if (rs_is_raid0(rs) || rs_is_raid10(rs)) {
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limits->discard_granularity = chunk_size_bytes;
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limits->max_discard_sectors = rs->md.chunk_sectors;
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}
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