Now log is safe to enable for raid array with cache disk
Signed-off-by: Shaohua Li <shli@xxxxxx>
---
drivers/md/raid5.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index b694d06..26ea100 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -6309,8 +6309,11 @@ static void raid5_free_percpu(struct r5conf *conf)
static void free_conf(struct r5conf *conf)
{
+ if (conf->log)
+ r5l_exit_log(conf->log);
if (conf->shrinker.seeks)
unregister_shrinker(&conf->shrinker);
+
free_thread_groups(conf);
shrink_stripes(conf);
raid5_free_percpu(conf);
@@ -6954,6 +6957,16 @@ static int run(struct mddev *mddev)
mddev->queue);
}
+ rdev_for_each(rdev, mddev) {
+ if (test_bit(WriteCache, &rdev->flags)) {
+ char b[BDEVNAME_SIZE];
+ printk(KERN_INFO"md/raid:%s: using device %s as cache\n",
+ mdname(mddev), bdevname(rdev->bdev, b));
+ r5l_init_log(conf, rdev);
+ break;
+ }
+ }
+
return 0;
abort:
md_unregister_thread(&mddev->thread);
--
1.8.5.6
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