linux-kernel - Re: [PATCH 1/2] Introduce copy_user_handle

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Message-ID: <m363rhhbex.fsf@gravicappa.englab.brq.redhat.com>
Date:	Mon, 07 Jul 2008 19:05:58 +0200
From:	Vitaly Mayatskikh <v.mayatskih@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Vitaly Mayatskikh <v.mayatskih@...il.com>,
	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/2] Introduce copy_user_handle_tail routine

Linus Torvalds <torvalds@...ux-foundation.org> writes:

> See? We don't actually care about vma boundaries or anything like that. We 
> just care about the only boundary that matters for faults: the page 
> boundary.

I was thinking about find_vma() for memset, but, yes, it should never
fail in kernel space (unless bug) and find_vma() is unnecessary.
-- 
wbr, Vitaly
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