netdev - yield() in netlink_broadcast

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Message-ID: <4F7EF9AC.8050305@zoho.com>
Date:	Fri, 06 Apr 2012 07:11:56 -0700
From:	Fredrick <fjohnber@...o.com>
To:	netdev@...r.kernel.org
CC:	eric.dumazet@...il.com
Subject: yield() in netlink_broadcast_filtered



I see there is a yield being called from
netlink_broadcast_filtered.
.....
int netlink_broadcast_filtered(...)
{
....
         if (info.delivered) {
                 if (info.congested && (allocation & __GFP_WAIT))
                         yield();
                 return 0;
         }
         return -ESRCH;
}
.....

But I don't see the point of calling it.
After the yield, there is nothing being done.
It just returns. So why yield ?
Why can't it simply return?


-Fredrick

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