From 97b0385a346829cf03efe131a26a4b6a4cd0a21f Mon Sep 17 00:00:00 2001
From: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Date: Wed, 17 Jun 2015 13:37:19 +0300
Subject: block-backend: Introduce blk_drain()

This patch introduces the blk_drain() function which allows to replace
blk_drain_all() when only one BlockDriverState needs to be drained.

Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 1434537440-28236-2-git-send-email-yarygin@linux.vnet.ibm.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 block/block-backend.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'block')

diff --git a/block/block-backend.c b/block/block-backend.c
index 93e46f3..aee8a12 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -700,6 +700,11 @@ int blk_flush_all(void)
     return bdrv_flush_all();
 }
 
+void blk_drain(BlockBackend *blk)
+{
+    bdrv_drain(blk->bs);
+}
+
 void blk_drain_all(void)
 {
     bdrv_drain_all();
-- 
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