linux-kernel - Re: [RFC] mm: kmemleak: replace __GFP_NOFAIL to GFP_NOWAIT in gfp_kmemleak

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Message-ID: <20180424132057.GE17484@dhcp22.suse.cz>
Date:   Tue, 24 Apr 2018 07:20:57 -0600
From:   Michal Hocko <mhocko@...nel.org>
To:     Chunyu Hu <chuhu.ncepu@...il.com>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Chunyu Hu <chuhu@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>
Subject: Re: [RFC] mm: kmemleak: replace __GFP_NOFAIL to GFP_NOWAIT in
 gfp_kmemleak_mask

On Mon 23-04-18 12:17:32, Chunyu Hu wrote:
[...]
> So if there is a new flag, it would be the 25th bits.

No new flags please. Can you simply store a simple bool into fail_page_alloc
and have save/restore api for that?

-- 
Michal Hocko
SUSE Labs