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Date:   Thu, 4 Feb 2021 14:02:22 +0100
From:   Michal Hocko <mhocko@suse.com>
To:     Mike Rapoport <rppt@kernel.org>
Cc:     James Bottomley <jejb@linux.ibm.com>,
        David Hildenbrand <david@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Andy Lutomirski <luto@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>, Borislav Petkov <bp@alien8.de>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Christopher Lameter <cl@linux.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Elena Reshetova <elena.reshetova@intel.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        "Kirill A. Shutemov" <kirill@shutemov.name>,
        Matthew Wilcox <willy@infradead.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Mike Rapoport <rppt@linux.ibm.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Rick Edgecombe <rick.p.edgecombe@intel.com>,
        Roman Gushchin <guro@fb.com>,
        Shakeel Butt <shakeelb@google.com>,
        Shuah Khan <shuah@kernel.org>,
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        Tycho Andersen <tycho@tycho.ws>, Will Deacon <will@kernel.org>,
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        x86@kernel.org, Hagen Paul Pfeifer <hagen@jauu.net>,
        Palmer Dabbelt <palmerdabbelt@google.com>
Subject: Re: [PATCH v16 07/11] secretmem: use PMD-size pages to amortize
 direct map fragmentation
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On Thu 04-02-21 11:58:55, Mike Rapoport wrote:
> On Wed, Feb 03, 2021 at 10:12:22AM +0100, Michal Hocko wrote:
[...]
> > Wrt to the specific syscall, please document why existing interfaces are
> > not a good fit as well. It would be also great to describe interaction
> > with mlock itself (I assume the two to be incompatible - mlock will fail
> > on and mlockall will ignore it).
> 
> The interaction with mlock() belongs more to the man page, but I don't mind
> adding this to changelog as well.

I would expect this to be explicitly handled in the patch - thus the
changelog rationale.
-- 
Michal Hocko
SUSE Labs