block coroutines functions run in different aiocontext, and are not protected by the BQL. Therefore are I/O.
Signed-off-by: Emanuele Giuseppe Esposito <eespo...@redhat.com> Reviewed-by: Paolo Bonzini <pbonz...@redhat.com> Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com> --- block/coroutines.h | 6 ++++++ 1 file changed, 6 insertions(+) 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); -- 2.27.0