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dm raid: remove unnecessary discard limits for raid10

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Commit bcc90d280465e ("md/raid10: improve raid10 discard request")
removes raid10's inability to properly handle large discards.  So
eliminate associated constraint from dm-raid's raid10 support.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer
2020-09-24 16:40:12 -04:00
parent e0910c8e4f
commit f0e90b6c66
1 changed files with 0 additions and 11 deletions
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11
drivers/md/dm-raid.c
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@ -3728,17 +3728,6 @@ static void raid_io_hints(struct dm_target *ti, struct queue_limits *limits)
blk_limits_io_min(limits, chunk_size_bytes); blk_limits_io_min(limits, chunk_size_bytes);
blk_limits_io_opt(limits, chunk_size_bytes * mddev_data_stripes(rs)); blk_limits_io_opt(limits, chunk_size_bytes * mddev_data_stripes(rs));
/*
* RAID10 personality requires bio splitting,
* RAID0/1/4/5/6 don't and process large discard bios properly.
*/
if (rs_is_raid10(rs)) {
limits->discard_granularity = max(chunk_size_bytes,
limits->discard_granularity);
limits->max_discard_sectors = min_not_zero(rs->md.chunk_sectors,
limits->max_discard_sectors);
}
} }
static void raid_postsuspend(struct dm_target *ti) static void raid_postsuspend(struct dm_target *ti)