linux-kernel - Re: [PATCH] mm: Allow GFP_IOFS for page_cache

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Message-ID: <56588789.1010300@suse.cz>
Date:	Fri, 27 Nov 2015 17:40:41 +0100
From:	Vlastimil Babka <vbabka@...e.cz>
To:	Michal Hocko <mhocko@...nel.org>, Jan Kara <jack@...e.cz>
Cc:	linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Mel Gorman <mgorman@...e.de>,
	Dave Chinner <david@...morbit.com>,
	Mark Fasheh <mfasheh@...e.com>, ocfs2-devel@....oracle.com,
	ceph-devel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: Allow GFP_IOFS for page_cache_read page cache
 allocation

On 11/26/2015 04:08 PM, Michal Hocko wrote:
> On Thu 12-11-15 10:53:01, Jan Kara wrote:
>> On Wed 11-11-15 15:13:53, mhocko@...nel.org wrote:
>>>
>>> Hi,
>>> this has been posted previously as a part of larger GFP_NOFS related
>>> patch set (http://lkml.kernel.org/r/1438768284-30927-1-git-send-email-mhocko%40kernel.org)
>>> but I think it makes sense to discuss it even out of that scope.
>>>
>>> I would like to hear FS and other MM people about the proposed interface.
>>> Using mapping_gfp_mask blindly doesn't sound good to me and vm_fault
>>> looks like a proper channel to communicate between MM and FS layers.
>>>
>>> Comments? Are there any better ideas?
>>
>> Makes sense to me and the filesystems I know should be fine with this
>> (famous last words ;). Feel free to add:
>>
>> Acked-by: Jan Kara <jack@...e.com>
>
> Thanks a lot! Are there any objections from other fs/mm people?

Please replace "GFP_IOFS" in the subject, as the "flag" has been removed 
recently. Otherwise

Acked-by: Vlastimil Babka <vbabka@...e.cz>
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