Commit ca4a4e9a authored by Mike Snitzer's avatar Mike Snitzer
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dm raid: remove unnecessary discard limits for raid0 and raid10 



Commit 29efc390 ("md/md0: optimize raid0 discard handling") and
commit d30588b2 ("md/raid10: improve raid10 discard request")
remove MD raid0's and raid10's inability to properly handle large
discards. So eliminate associated constraints from dm-raid's support.

Depends-on: 29efc390 ("md/md0: optimize raid0 discard handling")
Depends-on: d30588b2 ("md/raid10: improve raid10 discard request")
Reported-by: default avatarMatthew Ruffell <matthew.ruffell@canonical.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 8e947c8f

drivers/md/dm-raid.c

+0 −9
Original line number Diff line number Diff line
@@ -3750,15 +3750,6 @@ static void raid_io_hints(struct dm_target *ti, struct queue_limits *limits) 


	blk_limits_io_min(limits, chunk_size_bytes);

	blk_limits_io_opt(limits, chunk_size_bytes * mddev_data_stripes(rs));



	/*

	 * RAID0 and RAID10 personalities require bio splitting,

	 * RAID1/4/5/6 don't and process large discard bios properly.

	 */

	if (rs_is_raid0(rs) || rs_is_raid10(rs)) {

		limits->discard_granularity = chunk_size_bytes;

		limits->max_discard_sectors = rs->md.chunk_sectors;

	}

}



static void raid_postsuspend(struct dm_target *ti)