linux-kernel - Re: [PATCH] maple_tree: use GFP_KERNEL on mas_node

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: <06a8624e-00bb-a332-4271-860847faf4a3@bytedance.com>
Date:   Thu, 7 Sep 2023 12:02:02 +0800
From:   Peng Zhang <zhangpeng.00@...edance.com>
To:     심재선 <jason.sim@...sung.com>
Cc:     "liam.howlett@...cle.com" <liam.howlett@...cle.com>,
        "surenb@...gle.com" <surenb@...gle.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "jaewon31.kim@...il.com" <jaewon31.kim@...il.com>,
        "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH] maple_tree: use GFP_KERNEL on mas_node_count



在 2023/9/7 11:49, Matthew Wilcox 写道:
> On Thu, Sep 07, 2023 at 12:39:14PM +0900, 심재선 wrote:
>> Use GFP_KERNEL on mas_node_count instead of GFP_NOWAIT | __GFP_NOWARN
>> in order to allow memory reclaim.
There are many paths that call maple tree's mas_node_count(). Some paths
cannot reclaim memory.
> 
> What testing did you do of this patch?  In particular, did you try it
> with lockdep enabled?
>