Hi,
在 2024/01/18 2:20, Mikulas Patocka 写道:
The commit f52f5c71f3d4 ("md: fix stopping sync thread") breaks the LVM2
test shell/lvconvert-raid-reshape-linear_to_raid6-single-type.sh
There are many places that test for MD_RECOVERY_RUNNING or
mddev->sync_thread. If we don't reap the thread, they would be confused.
Please stop this... make sure you understand the lifetime of
sync_thread before you send such patch. I already explained in
f52f5c71f3d4 why md_reap_sync_thread() can't be called here.
Thanks,
Kuai
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Fixes: f52f5c71f3d4 ("md: fix stopping sync thread")
Cc: stable@xxxxxxxxxxxxxxx # v6.7
---
drivers/md/md.c | 6 ++++++
1 file changed, 6 insertions(+)
Index: linux-2.6/drivers/md/md.c
===================================================================
--- linux-2.6.orig/drivers/md/md.c
+++ linux-2.6/drivers/md/md.c
@@ -6308,6 +6308,12 @@ static void md_clean(struct mddev *mddev
static void __md_stop_writes(struct mddev *mddev)
{
stop_sync_thread(mddev, true, false);
+
+ if (mddev->sync_thread) {
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ md_reap_sync_thread(mddev);
+ }
+
del_timer_sync(&mddev->safemode_timer);
if (mddev->pers && mddev->pers->quiesce) {
.
