linux-kernel - Re: [PATCH] mm/ksm: delete the redundant ksm_merging

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:   Tue, 27 Jun 2023 12:22:01 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Nanyong Sun <sunnanyong@...wei.com>
Cc:     <xu.xin16@....com.cn>, <wangkefeng.wang@...wei.com>,
        <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>
Subject: Re: [PATCH] mm/ksm: delete the redundant ksm_merging_pages
 interafce in proc

On Tue, 27 Jun 2023 21:35:42 +0800 Nanyong Sun <sunnanyong@...wei.com> wrote:

> Since the ksm_merging_pages information already included in
> /proc/<pid>/ksm_stat, we can delete /proc/<pid>/ksm_merging_pages to
> make the directory more clean, and can save a little bit resources.

Well, this is a non backward compatible change - any userspace
which depends on ksm_merging_pages will break.

Yes, we could remove this but it will be a lengthy process involving
emitting a "please use ksm_stat instead" message for a few
years before removal.