Commit 08cc3995 authored Jul 22, 2022 by Mike Snitzer Committed by Greg Kroah-Hartman Aug 25, 2022

dm: return early from dm_pr_call() if DM device is suspended



[ Upstream commit e120a5f1e78fab6223544e425015f393d90d6f0d ]

Otherwise PR ops may be issued while the broader DM device is being
reconfigured, etc.

Fixes: 9c72bad1 ("dm: call PR reserve/unreserve on each underlying device")
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent bc4e8b95

drivers/md/dm.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -3080,6 +3080,11 @@ static int dm_call_pr(struct block_device *bdev, iterate_devices_callout_fn fn,
		goto out;
		ti = dm_table_get_target(table, 0);

		if (dm_suspended_md(md)) {
		ret = -EAGAIN;
		goto out;
		}

		ret = -EINVAL;
		if (!ti->type->iterate_devices)
		goto out;