linux-kernel - Re: [PATCH 2/7] mm/page_alloc: Treat RT tasks similar to __GFP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230112164222.7cfygytun7gj4u7v@techsingularity.net>
Date:   Thu, 12 Jan 2023 16:42:22 +0000
From:   Mel Gorman <mgorman@...hsingularity.net>
To:     Michal Hocko <mhocko@...e.com>
Cc:     Linux-MM <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        NeilBrown <neilb@...e.de>,
        Thierry Reding <thierry.reding@...il.com>,
        Matthew Wilcox <willy@...radead.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/7] mm/page_alloc: Treat RT tasks similar to __GFP_HIGH

On Thu, Jan 12, 2023 at 10:47:24AM +0100, Michal Hocko wrote:
> On Thu 12-01-23 09:36:23, Mel Gorman wrote:
> [...]
> > I agree with you but given the risk of bisections hitting this series,
> > would you be opposed to delaying the removal by 1 kernel release? That
> > way bisections for failures will hit 6.3 and a single commit or at least
> > just a report against 6.3. That would mitigate the risk of a full revert
> > of the series. I can add a note to the changelog mentioning the expected
> > removal so git blame will also highlight it.
> 
> Sure. I will post the removal on top of your series and put myself into
> the "wait for regression chair".
> 

I'm happy to sit in the same chair and send the patch. If there is an
example of an RT task actually caring about memory reserves, I'd like to
determine if it's a real problem or a badly designed RT application.

-- 
Mel Gorman
SUSE Labs