linux-kernel - Re: [PATCH 2/4] Assign bdi in super

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Message-ID: <20090911180106.GB19598@infradead.org>
Date:	Fri, 11 Sep 2009 14:01:06 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	chris.mason@...cle.com, hch@...radead.org, tytso@....edu,
	akpm@...ux-foundation.org, jack@...e.cz, trond.myklebust@....uio.no
Subject: Re: [PATCH 2/4] Assign bdi in super_block

On Fri, Sep 11, 2009 at 01:50:30PM +0200, Jens Axboe wrote:
> We do this automatically in get_sb_bdev() from the set_bdev_super()
> callback. Filesystems that have their own private backing_dev_info
> must assign that in ->fill_super().
> 
> Note that ->s_bdi assignment is required for proper writeback!

Looks good to me.   Can we get rid of BDI_CAP_NO_WRITEBACK with this by
simply not assigning a bdi?

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