[PATCH] dm log-writes: Add missing set_freezable() for freezable kthread

[Haotian Zhang]

The log_writes_kthread() calls try_to_freeze() but lacks set_freezable(),
rendering the freeze attempt ineffective since kernel threads are
non-freezable by default. This prevents proper thread suspension during
system suspend/hibernate.

Add set_freezable() to explicitly mark the thread as freezable.

Fixes: 0e9cebe72459 ("dm: add log writes target")
Signed-off-by: Haotian Zhang <vu...@iscas.ac.cn>
---
 drivers/md/dm-log-writes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 679b07dee229..1f8fbc27a12f 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -432,6 +432,7 @@ static int log_writes_kthread(void *arg)
        struct log_writes_c *lc = arg;
        sector_t sector = 0;
 
+       set_freezable();
        while (!kthread_should_stop()) {
                bool super = false;
                bool logging_enabled;
-- 
2.50.1.windows.1