I have tried new 4.19 kernel with proposed patches with no success. Same
story with md1_raid6 (last time it was with 5.4 and md10_raid6).
57.45% [kernel] [k] analyse_stripe
17.34% [kernel] [k] ops_run_io
6.60% [kernel] [k] handle_stripe
6.20% [kernel] [k] handle_active_stripes.isra.73
4.86% [kernel] [k] __list_del_entry_valid
1.82% [kernel] [k] queue_work_on
1.68% [kernel] [k] raid5_wakeup_stripe_thread
1.65% [kernel] [k] do_release_stripe
1.09% [kernel] [k] __release_stripe
Thank you
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 9b6da759dca2..a961d8eed73e 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -2532,13 +2532,10 @@ static ssize_t r5c_journal_mode_show(struct
mddev *mddev, char *page)
struct r5conf *conf;
int ret;
- ret = mddev_lock(mddev);
- if (ret)
- return ret;
-
+ spin_lock(&mddev->lock);
conf = mddev->private;
if (!conf || !conf->log) {
- mddev_unlock(mddev);
+ spin_unlock(&mddev->lock);
return 0;
}
@@ -2558,7 +2555,7 @@ static ssize_t r5c_journal_mode_show(struct
mddev *mddev, char *page)
default:
ret = 0;
}
- mddev_unlock(mddev);
+ spin_unlock(&mddev->lock);
return ret;
}
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4779,7 +4779,8 @@ action_store(struct mddev *mddev, const char
*page, size_t len)
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) &&
mddev_lock(mddev) == 0) {
flush_workqueue(md_misc_wq);
- if (mddev->sync_thread) {
+ if (mddev->sync_thread ||
+ test_bit(MD_RECOVERY_RUNNING,&mddev->recovery)) {
