[PULL,v2,40/55] Revert "mirror: Workaround for unexpected iohandler events during completion"

Commit Message

Michael S. Tsirkin July 19, 2016, 5:54 p.m. UTC

From: Fam Zheng <[e-mail]>

This reverts commit ab27c3b5e7408693dde0b565f050aa55c4a1bcef.

The virtio storage device host notifiers now work with
bdrv_drained_begin/end, so we don't need this hack any more.

Signed-off-by: Fam Zheng <[e-mail]>
Reviewed-by: Michael S. Tsirkin <[e-mail]>
Signed-off-by: Michael S. Tsirkin <[e-mail]>
Reviewed-by: Cornelia Huck <[e-mail]>
Reviewed-by: Stefan Hajnoczi <[e-mail]>
Acked-by: Paolo Bonzini <[e-mail]>
---
 block/mirror.c | 9 ---------
 1 file changed, 9 deletions(-)

Patch

diff --git a/block/mirror.c b/block/mirror.c
index b1e633e..9ae11e5 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -508,9 +508,6 @@  static void mirror_exit(BlockJob *job, void *opaque)
     block_job_completed(&s->common, data->ret);
     g_free(data);
     bdrv_drained_end(src);
-    if (qemu_get_aio_context() == bdrv_get_aio_context(src)) {
-        aio_enable_external(iohandler_get_aio_context());
-    }
     bdrv_unref(src);
 }
 
@@ -734,12 +731,6 @@  immediate_exit:
     /* Before we switch to target in mirror_exit, make sure data doesn't
      * change. */
     bdrv_drained_begin(bs);
-    if (qemu_get_aio_context() == bdrv_get_aio_context(bs)) {
-        /* FIXME: virtio host notifiers run on iohandler_ctx, therefore the
-         * above bdrv_drained_end isn't enough to quiesce it. This is ugly, we
-         * need a block layer API change to achieve this. */
-        aio_disable_external(iohandler_get_aio_context());
-    }
     block_job_defer_to_main_loop(&s->common, mirror_exit, data);
 }