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-rw-r--r--drivers/md/md.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 18c168bf5fab..914e6ece9af2 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -537,6 +537,8 @@ struct mddev {
/* Used to synchronize idle and frozen for action_store() */
struct mutex sync_mutex;
+ /* The sequence number for sync thread */
+ atomic_t sync_seq;
bool has_superblocks:1;
bool fail_last_dev:1;