lkml.org 
[lkml]   [2014]   [Oct]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 09/16] virtio-net: drop config_mutex
On 10/6/2014 3:56 PM, Michael S. Tsirkin wrote:

>>> config_mutex served two purposes: prevent multiple concurrent config
>>> change handlers, and synchronize access to config_enable flag.

>>> Since commit dbf2576e37da0fcc7aacbfbb9fd5d3de7888a3c1
>>> workqueue: make all workqueues non-reentrant
>>> all workqueues are non-reentrant, and config_enable
>>> is now gone.

>>> Get rid of the unnecessary lock.

>>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
>>> ---
>>> drivers/net/virtio_net.c | 7 +------
>>> 1 file changed, 1 insertion(+), 6 deletions(-)

>>> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>>> index fa17afa..d80fef4 100644
>>> --- a/drivers/net/virtio_net.c
>>> +++ b/drivers/net/virtio_net.c
>> [...]
>>> @@ -1430,7 +1426,7 @@ static void virtnet_config_changed_work(struct work_struct *work)
>>> netif_tx_stop_all_queues(vi->dev);
>>> }
>>> done:
>>> - mutex_unlock(&vi->config_lock);
>>> + return;

>> There's no need for this *return*.

> I know - it's removed by the follow-up patch.

Yeah, I saw.

> It's formatted like this to make diff smaller
> and make review easier.

Don't understand how adding this line makes diff smaller though...
You first need to add it and then to delete it, where's the save?

WBR, Sergei



\
 
 \ /
  Last update: 2014-10-06 14:42    [W:0.081 / U:0.368 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site