From: Paolo Bonzini Date: Mon, 13 Feb 2017 13:52:26 +0000 (+0100) Subject: blkdebug: reschedule coroutine on the AioContext it is running on X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e5c67ab552fb056827b5b40356c0ef235e975e7e;p=qemu.git blkdebug: reschedule coroutine on the AioContext it is running on Keep the coroutine on the same AioContext. Without this change, there would be a race between yielding the coroutine and reentering it. While the race cannot happen now, because the code only runs from a single AioContext, this will change with multiqueue support in the block layer. While doing the change, replace custom bottom half with aio_co_schedule. Signed-off-by: Paolo Bonzini Reviewed-by: Fam Zheng Reviewed-by: Stefan Hajnoczi Reviewed-by: Daniel P. Berrange Message-id: 20170213135235.12274-10-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi --- diff --git a/block/blkdebug.c b/block/blkdebug.c index acccf85666..d8eee1b9b4 100644 --- a/block/blkdebug.c +++ b/block/blkdebug.c @@ -405,12 +405,6 @@ out: return ret; } -static void error_callback_bh(void *opaque) -{ - Coroutine *co = opaque; - qemu_coroutine_enter(co); -} - static int inject_error(BlockDriverState *bs, BlkdebugRule *rule) { BDRVBlkdebugState *s = bs->opaque; @@ -423,8 +417,7 @@ static int inject_error(BlockDriverState *bs, BlkdebugRule *rule) } if (!immediately) { - aio_bh_schedule_oneshot(bdrv_get_aio_context(bs), error_callback_bh, - qemu_coroutine_self()); + aio_co_schedule(qemu_get_current_aio_context(), qemu_coroutine_self()); qemu_coroutine_yield(); }