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-rw-r--r--include/block/blockjob.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/block/blockjob.h b/include/block/blockjob.h
index 9694f130b0..b6d4ebbe03 100644
--- a/include/block/blockjob.h
+++ b/include/block/blockjob.h
@@ -315,4 +315,23 @@ void block_job_iostatus_reset(BlockJob *job);
BlockErrorAction block_job_error_action(BlockJob *job, BlockDriverState *bs,
BlockdevOnError on_err,
int is_read, int error);
+
+typedef void BlockJobDeferToMainLoopFn(BlockJob *job, void *opaque);
+
+/**
+ * block_job_defer_to_main_loop:
+ * @job: The job
+ * @fn: The function to run in the main loop
+ * @opaque: The opaque value that is passed to @fn
+ *
+ * Execute a given function in the main loop with the BlockDriverState
+ * AioContext acquired. Block jobs must call bdrv_unref(), bdrv_close(), and
+ * anything that uses bdrv_drain_all() in the main loop.
+ *
+ * The @job AioContext is held while @fn executes.
+ */
+void block_job_defer_to_main_loop(BlockJob *job,
+ BlockJobDeferToMainLoopFn *fn,
+ void *opaque);
+
#endif