diff mbox

[PULL,04/19] block: mark AioContext as recursive

Message ID 1419006909-1781-5-git-send-email-kwolf@redhat.com
State New
Headers show

Commit Message

Kevin Wolf Dec. 19, 2014, 4:34 p.m. UTC 
From: Paolo Bonzini <pbonzini@redhat.com>

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(+)
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Patch

diff --git a/async.c b/async.c
index 3939b79..572f239 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);