linux-kernel - Re: [PATCH 04/11] writeback: switch to per-bdi threads for flushing data

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Date:	Fri, 29 May 2009 00:28:01 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Artem Bityutskiy <dedekind1@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	tytso@....edu, chris.mason@...cle.com, david@...morbit.com,
	hch@...radead.org, akpm@...ux-foundation.org, jack@...e.cz,
	yanmin_zhang@...ux.intel.com, richard@....demon.co.uk,
	damien.wyart@...e.fr
Subject: Re: [PATCH 04/11] writeback: switch to per-bdi threads for
	flushing  data

On Thu, May 28 2009, Artem Bityutskiy wrote:
> Jens Axboe wrote:
>> +#define BDI_CAP_FLUSH_FORKER	0x00000200
>
> Would it please be possible to add a comment about
> what this flag is, and whether it is for internal
> usage or not. Not immediately obvious for me.

It's internal, probably I should just replace it with a check for
&default_backing_dev_info. If not, I'll add a comment.

-- 
Jens Axboe

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