From ce0f141259f06fd77fde2519cc352618ad797ce2 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 7 Apr 2016 18:33:33 +0200
Subject: block: introduce bdrv_no_throttling_begin/end

Extract the handling of throttling from bdrv_flush_io_queue.  These
new functions will soon become BdrvChildRole callbacks, as they can
be generalized to "beginning of drain" and "end of drain".

Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/throttle-groups.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'block/throttle-groups.c')

diff --git a/block/throttle-groups.c b/block/throttle-groups.c
index b796f6b..9ac063a 100644
--- a/block/throttle-groups.c
+++ b/block/throttle-groups.c
@@ -219,6 +219,10 @@ static bool throttle_group_schedule_timer(BlockDriverState *bs,
     ThrottleGroup *tg = container_of(ts, ThrottleGroup, ts);
     bool must_wait;
 
+    if (bs->io_limits_disabled) {
+        return false;
+    }
+
     /* Check if any of the timers in this group is already armed */
     if (tg->any_timer_armed[is_write]) {
         return true;
-- 
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