block: make every barrier action optional

[deliverable/linux.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5c92b44323993b0101b5464e57d8a66844d45aa1..b044267009ed6d83eab91fe5a7e53fdcf1dcea56 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -526,12 +526,14 @@ enum {
        QUEUE_ORDERED_BY_DRAIN          = 0x01,
        QUEUE_ORDERED_BY_TAG            = 0x02,
        QUEUE_ORDERED_DO_PREFLUSH       = 0x10,
+       QUEUE_ORDERED_DO_BAR            = 0x20,
        QUEUE_ORDERED_DO_POSTFLUSH      = 0x40,
        QUEUE_ORDERED_DO_FUA            = 0x80,
 
        QUEUE_ORDERED_NONE              = 0x00,
 
-       QUEUE_ORDERED_DRAIN             = QUEUE_ORDERED_BY_DRAIN,
+       QUEUE_ORDERED_DRAIN             = QUEUE_ORDERED_BY_DRAIN |
+                                         QUEUE_ORDERED_DO_BAR,
        QUEUE_ORDERED_DRAIN_FLUSH       = QUEUE_ORDERED_DRAIN |
                                          QUEUE_ORDERED_DO_PREFLUSH |
                                          QUEUE_ORDERED_DO_POSTFLUSH,
@@ -539,7 +541,8 @@ enum {
                                          QUEUE_ORDERED_DO_PREFLUSH |
                                          QUEUE_ORDERED_DO_FUA,
 
-       QUEUE_ORDERED_TAG               = QUEUE_ORDERED_BY_TAG,
+       QUEUE_ORDERED_TAG               = QUEUE_ORDERED_BY_TAG |
+                                         QUEUE_ORDERED_DO_BAR,
        QUEUE_ORDERED_TAG_FLUSH         = QUEUE_ORDERED_TAG |
                                          QUEUE_ORDERED_DO_PREFLUSH |
                                          QUEUE_ORDERED_DO_POSTFLUSH,