From e120a5f1e78fab6223544e425015f393d90d6f0d Mon Sep 17 00:00:00 2001

From: Mike Snitzer <snitzer@kernel.org>

Date: Fri, 22 Jul 2022 15:31:23 -0400

Subject: [PATCH] dm: return early from dm_pr_call() if DM device is suspended

Git-commit: e120a5f1e78fab6223544e425015f393d90d6f0d

Patch-mainline: v6.0-rc1

References: git-fixes

Otherwise PR ops may be issued while the broader DM device is being

reconfigured, etc.

Fixes: 9c72bad1f31a ("dm: call PR reserve/unreserve on each underlying device")

Signed-off-by: Mike Snitzer <snitzer@kernel.org>

Signed-off-by: Coly Li <colyli@suse.de>

---

 drivers/md/dm.c | 5 +++++

 1 file changed, 5 insertions(+)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c

index 560ad05497a9..e44415daa98f 100644

--- a/drivers/md/dm.c

+++ b/drivers/md/dm.c

@@ -3096,6 +3096,11 @@ 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;

-- 

2.35.3