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Subject: Re: [patch]mm: add more blk plug
From: Shaohua Li <shaohua.li@intel.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>, Andrew Morton <akpm@linux-foundation.org>,
        lkml <linux-kernel@vger.kernel.org>
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Date: Mon, 26 Sep 2011 15:38:47 +0800
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On Mon, 2011-09-26 at 15:30 +0800, Christoph Hellwig wrote:
> On Mon, Sep 26, 2011 at 10:30:26AM +0800, Shaohua Li wrote:
> > Some filesystems implement .writepages. We don't have blk plug
> > in such filesystems for .writepages.
> 
> Please add the plugging in the actual ->writepages instances.
there are several filesystems have ->writepages. Can you share an hint
why we don't add plugging in the do_writepages?

Thanks,
Shaohua