lkml.org 
[lkml]   [2015]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/6] Drivers: hv: vmbus: decrease num_sc on subchannel removal
Date
It is unlikely that that host will ask us to close only one subchannel for a
device but let's be consistent. Do both num_sc++ and num_sc-- with
channel->lock to be on the safe side.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
drivers/hv/channel_mgmt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index b28cbdf..8b4b561 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -205,6 +205,7 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
primary_channel = channel->primary_channel;
spin_lock_irqsave(&primary_channel->lock, flags);
list_del(&channel->sc_list);
+ channel->num_sc--;
spin_unlock_irqrestore(&primary_channel->lock, flags);
}
free_channel(channel);
@@ -265,8 +266,8 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
newchannel->primary_channel = channel;
spin_lock_irqsave(&channel->lock, flags);
list_add_tail(&newchannel->sc_list, &channel->sc_list);
- spin_unlock_irqrestore(&channel->lock, flags);
channel->num_sc++;
+ spin_unlock_irqrestore(&channel->lock, flags);
} else
goto err_free_chan;
}
--
1.9.3


\
 
 \ /
  Last update: 2015-04-21 16:41    [W:0.596 / U:0.232 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site