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authorAlberto Garcia <berto@igalia.com>2015-06-08 18:17:45 +0200
committerStefan Hajnoczi <stefanha@redhat.com>2015-06-12 14:00:00 +0100
commitdb6283385cb708b9d589e5b57e96eab4afd0269e (patch)
tree4c50c7acecd3d79c6efb6beee4a359bfdb3322f1 /include
parent76f4afb40fa076ed23fe0ab42c7a768ddb71123f (diff)
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throttle: acquire the ThrottleGroup lock in bdrv_swap()
bdrv_swap() touches the fields of a BlockDriverState that are protected by the ThrottleGroup lock. Although those fields end up in their original place, they are temporarily swapped in the process, so there's a chance that an operation on a member of the same group happening on a different thread can try to use them. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: d92dc40d7c4f1fc5cda5cbbf4ffb7a4670b79d17.1433779731.git.berto@igalia.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/block/throttle-groups.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/block/throttle-groups.h b/include/block/throttle-groups.h
index 322139a..fab113f 100644
--- a/include/block/throttle-groups.h
+++ b/include/block/throttle-groups.h
@@ -40,4 +40,7 @@ void coroutine_fn throttle_group_co_io_limits_intercept(BlockDriverState *bs,
unsigned int bytes,
bool is_write);
+void throttle_group_lock(BlockDriverState *bs);
+void throttle_group_unlock(BlockDriverState *bs);
+
#endif