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linux-aio: Fix laio resource leak

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when hotplug virtio-scsi disks using laio, the aio_nr will
increase in laio_init() by io_setup(), we can see the number by
  # cat /proc/sys/fs/aio-nr
  128
if the aio_nr attach the maxnum, which found from
  # cat /proc/sys/fs/aio-max-nr
  65536
the hotplug process will fail because of aio context leak.

Fix it by io_destroy in laio_cleanup().

Reported-by: daifulai <daifulai@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Gonglei 2014-07-12 11:43:37 +08:00 committed by Stefan Hajnoczi
parent 7a6d04e73f
commit a1abf40d6b
1 changed files with 5 additions and 0 deletions
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5
block/linux-aio.c
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@ -310,5 +310,10 @@ void laio_cleanup(void *s_)
struct qemu_laio_state *s = s_;
event_notifier_cleanup(&s->e);
if (io_destroy(s->ctx) != 0) {
fprintf(stderr, "%s: destroy AIO context %p failed\n",
__func__, &s->ctx);
}
g_free(s);
}