linux-kernel - Re: What is in ubifs-2.6.git

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Message-Id: <1222765363.8051.10.camel@sauron>
Date:	Tue, 30 Sep 2008 12:02:43 +0300
From:	Artem Bityutskiy <dedekind@...radead.org>
To:	Amit Kumar Sharma <amitsharma.9@...sung.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-mtd@...ts.infradead.org,
	Adrian Hunter <ext-adrian.hunter@...ia.com>,
	linux-kernel@...r.kernel.org
Subject: Re: What is in ubifs-2.6.git


On Tue, 2008-09-30 at 14:25 +0530, Amit Kumar Sharma wrote:
> Hi Artem
> 
> OneNAND can support for full block read also in sync burst 
> block read mode ,so why u want to limit bulk read only for 4 
> pages , with sync burst enable u can read max 64 pages.
> so in place of max 4 pages , u can set max to 64 it will be 
> improve performance if sync burst mode is upported.

Actually UBIFS reads up to whole eraseblock. So if you have
a file, and it is resided in consecutive NAND pages of an
eraseblock, and UBIFS has decided to do read-ahead, it would
read whole eraseblock. So for OneNAND, indeed UBIFS may read
up to 64 NAND pages at one go.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

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