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Revert "dm raid: fix discard limits for raid1 and raid10"

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This reverts commit e0910c8e4f87bb9f767e61a778b0d9271c4dc512.

It causes problems :(

Reported-by: Dave Jones <davej@codemonkey.org.uk>
Reported-by: Mike Snitzer <snitzer@redhat.com>
Cc: Zdenek Kabelac <zkabelac@redhat.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2020-12-14 17:51:18 +01:00
parent 859f703543
commit 26934c8300
1 changed files with 5 additions and 7 deletions
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12
drivers/md/dm-raid.c
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@ -3730,14 +3730,12 @@ static void raid_io_hints(struct dm_target *ti, struct queue_limits *limits)
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.
* RAID1 and RAID10 personalities require bio splitting,
* RAID0/4/5/6 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);
if (rs_is_raid1(rs) || rs_is_raid10(rs)) {
limits->discard_granularity = chunk_size_bytes;
limits->max_discard_sectors = rs->md.chunk_sectors;
}
}