Commit 6b2460e6 authored by Heinz Mauelshagen's avatar Heinz Mauelshagen Committed by Song Liu
Browse files

md raid1: allow writebehind to work on any leg device set WriteMostly 



As the WriteMostly flag can be set on any component device of a RAID1
array, remove the constraint that it only works if set on the first one.

Signed-off-by: default avatarHeinz Mauelshagen <heinzm@redhat.com>
Tested-by: default avatarXiao Ni <xni@redhat.com>
Link: https://lore.kernel.org/r/2a9592bf3340f34bf588eec984b23ee219f3985e.1692013451.git.heinzm@redhat.com


Signed-off-by: default avatarSong Liu <song@kernel.org>
parent c069da44

drivers/md/raid1.c

+1 −2
Original line number Diff line number Diff line
@@ -1523,8 +1523,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, 
			 * Not if there are too many, or cannot

			 * allocate memory, or a reader on WriteMostly

			 * is waiting for behind writes to flush */

			if (bitmap &&

			    test_bit(WriteMostly, &rdev->flags) &&

			if (bitmap && write_behind &&

			    (atomic_read(&bitmap->behind_writes)

			     < mddev->bitmap_info.max_write_behind) &&

			    !waitqueue_active(&bitmap->behind_wait)) {