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authorPaolo Bonzini <pbonzini@redhat.com>2017-06-05 14:38:55 +0200
committerFam Zheng <famz@redhat.com>2017-06-16 07:55:00 +0800
commit850d54a2a9cf16f589f4aa40272515294671633f (patch)
treea56d8598543e525ca9d6710184794b9b17db6728 /include/block/block_int.h
parente2a6ae7fe57c17199624e4d47826ec46ca57d546 (diff)
block: access io_plugged with atomic ops
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20170605123908.18777-7-pbonzini@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'include/block/block_int.h')
-rw-r--r--include/block/block_int.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h
index cf544b7f31..091b5d361c 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -611,9 +611,6 @@ struct BlockDriverState {
uint64_t write_threshold_offset;
NotifierWithReturn write_threshold_notifier;
- /* counter for nested bdrv_io_plug */
- unsigned io_plugged;
-
QLIST_HEAD(, BdrvTrackedRequest) tracked_requests;
CoQueue flush_queue; /* Serializing flush queue */
bool active_flush_req; /* Flush request in flight? */
@@ -639,6 +636,11 @@ struct BlockDriverState {
*/
bool wakeup;
+ /* counter for nested bdrv_io_plug.
+ * Accessed with atomic ops.
+ */
+ unsigned io_plugged;
+
/* do we need to tell the quest if we have a volatile write cache? */
int enable_write_cache;