The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 7b2377486767503d47265e4d487a63c651f6b55d Mon Sep 17 00:00:00 2001
From: Hou Tao houtao1@huawei.com Date: Mon, 15 Jun 2020 11:33:23 +0800 Subject: [PATCH] dm zoned: assign max_io_len correctly
The unit of max_io_len is sector instead of byte (spotted through code review), so fix it.
Fixes: 3b1a94c88b79 ("dm zoned: drive-managed zoned block device target") Cc: stable@vger.kernel.org Signed-off-by: Hou Tao houtao1@huawei.com Reviewed-by: Damien Le Moal damien.lemoal@wdc.com Signed-off-by: Mike Snitzer snitzer@redhat.com
diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c index a907a9446c0b..cf915009c306 100644 --- a/drivers/md/dm-zoned-target.c +++ b/drivers/md/dm-zoned-target.c @@ -890,7 +890,7 @@ static int dmz_ctr(struct dm_target *ti, unsigned int argc, char **argv) }
/* Set target (no write same support) */ - ti->max_io_len = dmz_zone_nr_sectors(dmz->metadata) << 9; + ti->max_io_len = dmz_zone_nr_sectors(dmz->metadata); ti->num_flush_bios = 1; ti->num_discard_bios = 1; ti->num_write_zeroes_bios = 1;