linux-kernel - Re: [RFC, PATCH 3/4] elf_core_dump(): make offset calculation and writing processes explicit

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Message-ID: <87ocm0wct8.fsf@basil.nowhere.org>
Date:	Tue, 15 Dec 2009 15:07:31 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Daisuke HATAYAMA <d.hatayama@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	jdike@...toit.com, tony.luck@...el.com, mhiramat@...hat.com
Subject: Re: [RFC, PATCH 3/4] elf_core_dump(): make offset calculation and writing processes explicit

Daisuke HATAYAMA <d.hatayama@...fujitsu.com> writes:
>
> However, the clause 1. is not always possible, since one
> cannot assume that dump_seek() function always supports
> the seek in the minus direction. Consider no_llseek.

Not even forward seek is always supported, consider core dumping
to a pipe.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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