linux-kernel - Re: [RFC v10 PATCH 2/3] mm: unmap VM_HUGETLB mappings with optimized path

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]

Date:   Sat, 15 Sep 2018 02:44:54 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Yang Shi <yang.shi@...ux.alibaba.com>
Cc:     mhocko@...nel.org, ldufour@...ux.vnet.ibm.com, vbabka@...e.cz,
        kirill@...temov.name, akpm@...ux-foundation.org,
        dave.hansen@...el.com, oleg@...hat.com, srikar@...ux.vnet.ibm.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC v10 PATCH 2/3] mm: unmap VM_HUGETLB mappings with optimized
 path

On Sat, Sep 15, 2018 at 04:34:58AM +0800, Yang Shi wrote:
> When unmapping VM_HUGETLB mappings, vm flags need to be updated. Since
> the vmas have been detached, so it sounds safe to update vm flags with
> read mmap_sem.
> 
> Cc: Michal Hocko <mhocko@...nel.org>
> Cc: Vlastimil Babka <vbabka@...e.cz>
> Signed-off-by: Yang Shi <yang.shi@...ux.alibaba.com>

Reviewed-by: Matthew Wilcox <willy@...radead.org>