md: don't destroy serial_info_pool if serialize_policy is true

The serial_info_pool is needed if array sets serialize_policy to
true, so don't destroy it.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Song Liu <songliubraving@fb.com>

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 212e75dfebb719d060e1ca2ade96e0d7bbec01f2..92f0d45946e872148691caeeaf2be128dd085aa7 100644 (file)
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -1789,8 +1789,10 @@ void md_bitmap_destroy(struct mddev *mddev)
                return;
 
        md_bitmap_wait_behind_writes(mddev);
-       mempool_destroy(mddev->serial_info_pool);
-       mddev->serial_info_pool = NULL;
+       if (!mddev->serialize_policy) {
+               mempool_destroy(mddev->serial_info_pool);
+               mddev->serial_info_pool = NULL;
+       }
 
        mutex_lock(&mddev->bitmap_info.mutex);
        spin_lock(&mddev->lock);
@@ -2476,8 +2478,10 @@ backlog_store(struct mddev *mddev, const char *buf, size_t len)
        mddev->bitmap_info.max_write_behind = backlog;
        if (!backlog && mddev->serial_info_pool) {
                /* serial_info_pool is not needed if backlog is zero */
-               mempool_destroy(mddev->serial_info_pool);
-               mddev->serial_info_pool = NULL;
+               if (!mddev->serialize_policy) {
+                       mempool_destroy(mddev->serial_info_pool);
+                       mddev->serial_info_pool = NULL;
+               }
        } else if (backlog && !mddev->serial_info_pool) {
                /* serial_info_pool is needed since backlog is not zero */
                struct md_rdev *rdev;