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From 76f58e00133501dff1bd0c0f05d786e8fb01fcc8 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Mon, 14 Dec 2020 17:48:11 +0100
Subject: Revert "md: change mddev 'chunk_sectors' from int to unsigned"
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 6ffeb1c3f8226244c08105bcdbeecc04bad6b89a.
It causes problems :(
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Reported-by: Mike Snitzer <snitzer@redhat.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/md/md.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -311,7 +311,7 @@ struct mddev {
int external; /* metadata is
* managed externally */
char metadata_type[17]; /* externally set*/
- unsigned int chunk_sectors;
+ int chunk_sectors;
time64_t ctime, utime;
int level, layout;
char clevel[16];
@@ -339,7 +339,7 @@ struct mddev {
*/
sector_t reshape_position;
int delta_disks, new_level, new_layout;
- unsigned int new_chunk_sectors;
+ int new_chunk_sectors;
int reshape_backwards;
struct md_thread *thread; /* management thread */
From ee1b46545ebbe1572ddddf70f4abe04070669bd0 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Mon, 14 Dec 2020 17:51:18 +0100
Subject: Revert "dm raid: fix discard limits for raid1 and raid10"
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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>
---
drivers/md/dm-raid.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -3730,14 +3730,12 @@ static void raid_io_hints(struct dm_targ
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;
}
}
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