1 files changed, 6 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h
index 6c3c00a8fe19..aab72194d226 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -185,6 +185,12 @@ void blk_account_io_start(struct request *req);
 void blk_account_io_done(struct request *req, u64 now);
 
 /*
+ * Plug flush limits
+ */
+#define BLK_MAX_REQUEST_COUNT	32
+#define BLK_PLUG_FLUSH_SIZE	(128 * 1024)
+
+/*
  * Internal elevator interface
  */
 #define ELV_ON_HASH(rq) ((rq)->rq_flags & RQF_HASHED)