linux-kernel - Re: [PATCH] mm: hugetlb: fix hugetlb allocation failure when handling freed or in-use hugetlb

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: <E549C993-A900-40AF-9D0E-F14109237487@linux.dev>
Date: Mon, 5 Feb 2024 14:56:49 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: Baolin Wang <baolin.wang@...ux.alibaba.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 Oscar Salvador <osalvador@...e.de>,
 David Hildenbrand <david@...hat.com>,
 Michal Hocko <mhocko@...nel.org>,
 Linux-MM <linux-mm@...ck.org>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: hugetlb: fix hugetlb allocation failure when handling
 freed or in-use hugetlb



> On Feb 5, 2024, at 11:54, Baolin Wang <baolin.wang@...ux.alibaba.com> wrote:
> 
> When handling the freed hugetlb or in-use hugetlb, we should ignore the
> failure of alloc_buddy_hugetlb_folio() to dissolve the old hugetlb successfully,
> since we did not use the new allocated hugetlb in this 2 cases.
> 
> Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>

OK. It is not a fix (I see a fix keyword in subject) but an
optimization for unnecessary-allocation cases. Thanks.

Reviewed-by: Muchun Song <muchun.song@...ux.dev>