commit ad02ad6fda4499fdf71c82ea1c7f37fbea25985d
author aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> Mon Sep 22 14:49:01 2008 +0000
committer aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> Mon Sep 22 14:49:01 2008 +0000
tree 49bcc84e2883fa9cc872f761676deaba7e7a6447
parent e5fd43a9268661c19e4a743680003a181dd67e0a

Do not allow AIO to be inited multiple times

This prevents two signalfd() threads from being spawned.  This problem was
originally spotted by Blue Swirl.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5289 c046a42c-6fe2-441c-8c8c-71466251a162

block-raw-posix.c

diff --git a/block-raw-posix.c b/block-raw-posix.c
index 7c42c10..26819a4 100644
--- a/block-raw-posix.c
+++ b/block-raw-posix.c
@@ -511,6 +511,9 @@
 {
     sigset_t mask;
 
+    if (aio_initialized)
+        return;
+
     aio_initialized = 1;
 
     /* Make sure to block AIO signal */