linux-kernel - Re: [PATCH v5 4/4] mm/sparse: Optimize memmap allocation during sparse

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] [day] [month] [year] [list]

Message-ID: <CAGM2rebmK30_jDyXa60uRC1q1wTAbJkxv3CDaao4JUMOrMTx4A@mail.gmail.com>
Date:   Fri, 29 Jun 2018 14:59:35 -0400
From:   Pavel Tatashin <pasha.tatashin@...cle.com>
To:     dave.hansen@...el.com
Cc:     bhe@...hat.com, LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>, pagupta@...hat.com,
        Linux Memory Management List <linux-mm@...ck.org>,
        kirill.shutemov@...ux.intel.com
Subject: Re: [PATCH v5 4/4] mm/sparse: Optimize memmap allocation during sparse_init()

> > This is done so nr_consumed_maps does not get out of sync with the
> > current pnum. pnum does not equal to nr_consumed_maps, as there are
> > may be holes in pnums, but there is one-to-one correlation.
> Can this be made more clear in the code?

Absolutely. I've done it here:
http://lkml.kernel.org/r/20180628173010.23849-1-pasha.tatashin@oracle.com

Pavel