From: Xueshi Hu <xueshi.hu@xxxxxxxxxx>
When an IO error happens, reschedule_retry() will increase
r1conf::nr_queued, which makes freeze_array() unblocked. However, before
all r1bio in the memory pool are released, the memory pool should not be
modified.
Signed-off-by: Xueshi Hu <xueshi.hu@xxxxxxxxxx>
---
drivers/md/raid1.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index dd25832eb045..ce48cb3af301 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -3298,6 +3298,13 @@ static int raid1_reshape(struct mddev *mddev)
freeze_array(conf, 0);
+ if (unlikely(atomic_read(conf->nr_queued))) {
+ kfree(newpoolinfo);
+ mempool_exit(&newpool);
+ unfreeze_array(conf);
+ return -EBUSY;
+ }
+
/* ok, everything is stopped */
oldpool = conf->r1bio_pool;
conf->r1bio_pool = newpool;
--
2.40.1
