In ops_run_io(), if call md_wait_for_blocked_rdev which it dec
nr_pending, the rdev->nr_pending will dec again in else-statement.
So the nr_penging is error and we can't remove this device.
Signed-off-by: majianpeng <majianpeng@xxxxxxxxx>
---
drivers/md/raid5.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index d267672..995b2de 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -607,6 +607,12 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
md_check_recovery(conf->mddev);
}
md_wait_for_blocked_rdev(rdev, conf->mddev);
+ /*
+ * Because md_wait_for_blocked_rdev will dec
+ * nr_pending,we must add.The real dec is in
+ * else statement.
+ */
+ atomic_inc(&rdev->nr_pending);
} else {
/* Acknowledged bad block - skip the write */
rdev_dec_pending(rdev, conf->mddev);
--
1.7.5.4
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