From fcf5def1ab0f94ff120b7141c943b517d2ece83d Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 17 Dec 2014 16:09:58 +0100
Subject: [PATCH] block: mark AioContext as recursive
AioContext can be accessed recursively, in fact that's what we do with
aio_poll. Marking the GSource as recursive avoids that GLib blocks it
and unblocks it around every call to aio_dispatch, which is a pretty
expensive operation.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
async.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/async.c b/async.c
index 3939b795e5..572f239e2c 100644
--- a/async.c
+++ b/async.c
@@ -300,6 +300,7 @@ AioContext *aio_context_new(Error **errp)
error_setg_errno(errp, -ret, "Failed to initialize event notifier");
return NULL;
}
+ g_source_set_can_recurse(&ctx->source, true);
aio_set_event_notifier(ctx, &ctx->notifier,
(EventNotifierHandler *)
event_notifier_test_and_clear);