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Diffstat (limited to 'drivers/block/xen-blkfront.c')
-rw-r--r--drivers/block/xen-blkfront.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index ac1b682edecb..50ec6f834996 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -424,8 +424,7 @@ static int xlvbd_barrier(struct blkfront_info *info)
424 const char *barrier; 424 const char *barrier;
425 425
426 switch (info->feature_barrier) { 426 switch (info->feature_barrier) {
427 case QUEUE_ORDERED_DRAIN: barrier = "enabled (drain)"; break; 427 case QUEUE_ORDERED_DRAIN: barrier = "enabled"; break;
428 case QUEUE_ORDERED_TAG: barrier = "enabled (tag)"; break;
429 case QUEUE_ORDERED_NONE: barrier = "disabled"; break; 428 case QUEUE_ORDERED_NONE: barrier = "disabled"; break;
430 default: return -EINVAL; 429 default: return -EINVAL;
431 } 430 }
@@ -1078,8 +1077,7 @@ static void blkfront_connect(struct blkfront_info *info)
1078 * we're dealing with a very old backend which writes 1077 * we're dealing with a very old backend which writes
1079 * synchronously; draining will do what needs to get done. 1078 * synchronously; draining will do what needs to get done.
1080 * 1079 *
1081 * If there are barriers, then we can do full queued writes 1080 * If there are barriers, then we use flush.
1082 * with tagged barriers.
1083 * 1081 *
1084 * If barriers are not supported, then there's no much we can 1082 * If barriers are not supported, then there's no much we can
1085 * do, so just set ordering to NONE. 1083 * do, so just set ordering to NONE.
@@ -1087,7 +1085,7 @@ static void blkfront_connect(struct blkfront_info *info)
1087 if (err) 1085 if (err)
1088 info->feature_barrier = QUEUE_ORDERED_DRAIN; 1086 info->feature_barrier = QUEUE_ORDERED_DRAIN;
1089 else if (barrier) 1087 else if (barrier)
1090 info->feature_barrier = QUEUE_ORDERED_TAG; 1088 info->feature_barrier = QUEUE_ORDERED_DRAIN_FLUSH;
1091 else 1089 else
1092 info->feature_barrier = QUEUE_ORDERED_NONE; 1090 info->feature_barrier = QUEUE_ORDERED_NONE;
1093 1091