linux-kernel - Re: [PATCH 30/51] writeback: implement and use inode

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Message-ID: <20150703121721.GJ23329@quack.suse.cz>
Date:	Fri, 3 Jul 2015 14:17:21 +0200
From:	Jan Kara <jack@...e.cz>
To:	Tejun Heo <tj@...nel.org>
Cc:	Jan Kara <jack@...e.cz>, axboe@...nel.dk,
	linux-kernel@...r.kernel.org, hch@...radead.org,
	hannes@...xchg.org, linux-fsdevel@...r.kernel.org,
	vgoyal@...hat.com, lizefan@...wei.com, cgroups@...r.kernel.org,
	linux-mm@...ck.org, mhocko@...e.cz, clm@...com,
	fengguang.wu@...el.com, david@...morbit.com, gthelen@...gle.com,
	khlebnikov@...dex-team.ru
Subject: Re: [PATCH 30/51] writeback: implement and use inode_congested()

On Wed 01-07-15 21:46:34, Tejun Heo wrote:
> Hello,
> 
> On Tue, Jun 30, 2015 at 05:21:05PM +0200, Jan Kara wrote:
> > Hum, is there any point in supporting NULL inode with inode_congested()?
> > That would look more like a programming bug than anything... Otherwise the
> > patch looks good to me so you can add:
> 
> Those are inherited from the existing usages and all for swapper
> space.  I think we should have a dummy inode instead of scattering
> NULL mapping->host test all over the place but that's for another day.

  Ah, OK. A comment about this would be nice.

									Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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