netdev - Re: [RFC,PATCH] loopback: calls netif_receive_skb() instead of netif

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Date:	23 Mar 2008 20:15:24 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [RFC,PATCH] loopback: calls netif_receive_skb() instead of netif_rx()

Eric Dumazet <dada1@...mosbay.com> writes:
> 
> What we call 4K stacks is in fact 4K - sizeof(struct task_struct), so

Actually it is 4K - sizeof(struct thread_struct). 

> a litle bit more than 2K. (not counting some insane configuration were
> struct task_struct take 3.5 KB, see CONFIG_LATENCYTOP for an example)

thread_struct significantly smaller than task_struct

That said I agree that 4K stack is too tight for many things
and in general dangerous.

-Andi
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