[Devel] [PATCH vz9 2/2] dm-ploop: drop redundant md_lock on md->status bits handling

[Konstantin Khorenko]

md->status bits are protected by ploop->bat_lock,
md->md_lock is used to protect in-memory BAT copy, md->wait_llist in
particular.

Fixes: 1a12832fd864 ("dm-ploop: fix resize and grow to use the new way of updating md pages")
Found while working on https://virtuozzo.atlassian.net/browse/VSTOR-107975

Signed-off-by: Konstantin Khorenko <khorenko at virtuozzo.com>

Feature: dm-ploop: ploop target driver
---
 drivers/md/dm-ploop-map.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/md/dm-ploop-map.c b/drivers/md/dm-ploop-map.c
index 5a2ef5691405..0b4558479f09 100644
--- a/drivers/md/dm-ploop-map.c
+++ b/drivers/md/dm-ploop-map.c
@@ -2728,16 +2728,13 @@ int ploop_prepare_reloc_index_wb(struct ploop *ploop,
 	err = -EIO;
 
 	spin_lock_irq(&ploop->bat_lock);
-	spin_lock(&md->md_lock);
 	/* Keep this test to be the same as in delay_if_md_busy */
 	if (test_bit(MD_WRITEBACK, &md->status) || test_bit(MD_UPDATING, &md->status)) {
 		err = -EBUSY;
-		spin_unlock(&md->md_lock);
 		goto out_error;
 	} else {
 		set_bit(MD_UPDATING, &md->status);
 	}
-	spin_unlock(&md->md_lock);
 
 	err = ploop_prepare_bat_update(ploop, md, type);
 	if (err)
-- 
2.43.5