From: Ming Lei ming.lei@redhat.com
[ Upstream commit b25b8f4b8ecef0f48c05f0c3572daeabefe16526 ]
An empty flush doesn't have a payload, so it should never be looked at when considering to possibly requeue a bio for the case when a reshape is in progress.
Fixes: 9dbd1aa3a81c ("dm raid: add reshaping support to the target") Reported-by: Patrick Plenefisch simonpatp@gmail.com Signed-off-by: Ming Lei ming.lei@redhat.com Signed-off-by: Mike Snitzer snitzer@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-raid.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 140bdf2a6ee11..e523ecdf947f4 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3329,14 +3329,14 @@ static int raid_map(struct dm_target *ti, struct bio *bio) struct mddev *mddev = &rs->md;
/* - * If we're reshaping to add disk(s)), ti->len and + * If we're reshaping to add disk(s), ti->len and * mddev->array_sectors will differ during the process * (ti->len > mddev->array_sectors), so we have to requeue * bios with addresses > mddev->array_sectors here or * there will occur accesses past EOD of the component * data images thus erroring the raid set. */ - if (unlikely(bio_end_sector(bio) > mddev->array_sectors)) + if (unlikely(bio_has_data(bio) && bio_end_sector(bio) > mddev->array_sectors)) return DM_MAPIO_REQUEUE;
md_handle_request(mddev, bio);