block: protect modification of dirty bitmaps with a mutex
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170605123908.18777-17-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 21cb65b..7489700 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -611,8 +611,8 @@
/* Writing to the list requires the BQL _and_ the dirty_bitmap_mutex.
* Reading from the list can be done with either the BQL or the
- * dirty_bitmap_mutex. Modifying a bitmap requires the AioContext
- * lock. */
+ * dirty_bitmap_mutex. Modifying a bitmap only requires
+ * dirty_bitmap_mutex. */
QemuMutex dirty_bitmap_mutex;
QLIST_HEAD(, BdrvDirtyBitmap) dirty_bitmaps;
