blk-mq: new multi-queue block IO queueing mechanism

[~andy/linux] / include / linux / bio.h

diff --git a/include/linux/bio.h b/include/linux/bio.h
index ec48bac5b039d25cd74829b1ba4c6a1506412dec..4c2775443dcf8750d90b8ba910fe62b2f89cae0c 100644 (file)
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -419,6 +419,8 @@ static inline void bio_list_init(struct bio_list *bl)
        bl->head = bl->tail = NULL;
 }
 
+#define BIO_EMPTY_LIST { NULL, NULL }
+
 #define bio_list_for_each(bio, bl) \
        for (bio = (bl)->head; bio; bio = bio->bi_next)