block: avoid building too big plug list

[firefly-linux-kernel-4.4.55.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 36f2e2b99ae3879bbc201ab3effd9cec7f0e2e21..92edb9601242d1c8252056d5820925fd2d2821f1 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -862,7 +862,10 @@ struct blk_plug {
        struct list_head list;
        struct list_head cb_list;
        unsigned int should_sort;
+       unsigned int count;
 };
+#define BLK_MAX_REQUEST_COUNT 16
+
 struct blk_plug_cb {
        struct list_head list;
        void (*callback)(struct blk_plug_cb *);