diff mbox series

[v5,20/31] block/coroutines: I/O API

Message ID 20211124064418.3120601-21-eesposit@redhat.com (mailing list archive)
State New, archived
Headers show
Series block layer: split block APIs in global state and I/O | expand

Commit Message

Emanuele Giuseppe Esposito Nov. 24, 2021, 6:44 a.m. UTC 
block coroutines functions run in different aiocontext, and are
not protected by the BQL. Therefore are I/O.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 block/coroutines.h | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/block/coroutines.h b/block/coroutines.h
index c8c14a29c8..c61abd271a 100644
--- a/block/coroutines.h
+++ b/block/coroutines.h
@@ -29,6 +29,12 @@ 
 
 /* For blk_bs() in generated block/block-gen.c */
 #include "sysemu/block-backend.h"
+/*
+ * I/O API functions. These functions are thread-safe.
+ *
+ * See include/block/block-io.h for more information about
+ * the I/O API.
+ */
 
 int coroutine_fn bdrv_co_check(BlockDriverState *bs,
                                BdrvCheckResult *res, BdrvCheckMode fix);