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-rw-r--r--drivers/md/bitmap.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index cb821d76d1b4..aa82b7caa85f 100644
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -227,6 +227,7 @@ struct bitmap {
int allclean;
atomic_t behind_writes;
+ unsigned long behind_writes_used; /* highest actual value at runtime */
/*
* the bitmap daemon - periodically wakes up and sweeps the bitmap