linux-kernel - Re: [GIT]: Networking

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Message-Id: <20090617.043219.74142763.davem@davemloft.net>
Date:	Wed, 17 Jun 2009 04:32:19 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	torvalds@...ux-foundation.org, mingo@...e.hu,
	alan@...rguk.ukuu.org.uk, akpm@...ux-foundation.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [GIT]: Networking

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 16 Jun 2009 22:12:03 +0200

> [PATCH] net: sk_wmem_alloc has initial value of one, not zero
> 
> commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 
> (net: No more expensive sock_hold()/sock_put() on each tx)
> changed initial sk_wmem_alloc value.
> 
> Some protocols check sk_wmem_alloc value to determine if a timer
> must delay socket deallocation. We must take care of the sk_wmem_alloc
> value being one instead of zero when no write allocations are pending.
> 
> Reported by Ingo Molnar, and full diagnostic from David Miller.
> 
> This patch introduces three helpers to get read/write allocations
> and a followup patch will use these helpers to report correct
> write allocations to user.
> 
> Reported-by: Ingo Molnar <mingo@...e.hu>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied, thanks Eric.
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