linux-kernel - Re: [PATCH 8/9] readahead: basic support for backwards prefetching

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Message-ID: <4ED50A63.1010805@draigBrady.com>
Date:	Tue, 29 Nov 2011 16:37:55 +0000
From:	Pádraig Brady <P@...igBrady.com>
To:	Jan Kara <jack@...e.cz>
CC:	Wu Fengguang <fengguang.wu@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Li Shaohua <shaohua.li@...el.com>,
	Linux Memory Management List <linux-mm@...ck.org>,
	linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 8/9] readahead: basic support for backwards prefetching

On 11/29/2011 03:35 PM, Jan Kara wrote:
>   Someone already mentioned this earlier and I don't think I've seen a
> response: Do you have a realistic usecase for this? I don't think I've ever
> seen an application reading file backwards...

tac, tail -n$large, ...

cheers,
Pádraig.
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