When raid takeovered, it used old personality to set task->comm[].
So we add judgement and set corrected task->comm[].
Signed-off-by: majianpeng <majianpeng@xxxxxxxxx>
---
drivers/md/md.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 1c2f904..6b3ce6e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6738,11 +6738,25 @@ struct md_thread *md_register_thread(void (*run) (struct mddev *), struct mddev
const char *name)
{
struct md_thread *thread;
+ struct md_personality *pers = NULL;
thread = kzalloc(sizeof(struct md_thread), GFP_KERNEL);
if (!thread)
return NULL;
+ /*
+ *When raid takeovered,the mddev->pers was old,so the
+ *thread_name is wrong.
+ */
+ if (name == NULL && mddev->level != mddev->new_level) {
+ spin_lock(&pers_lock);
+ list_for_each_entry(pers, &pers_list, list)
+ if (pers->level == mddev->new_level) {
+ name = pers->name;
+ break;
+ }
+ spin_unlock(&pers_lock);
+ }
init_waitqueue_head(&thread->wqueue);
thread->run = run;
--
1.7.5.4
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