From: Matthew Wilcox <willy@infradead.org>
To: Mike Rapoport <rppt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Michal Hocko <mhocko@suse.com>,
David Hildenbrand <david@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
"H. Peter Anvin" <hpa@zytor.com>,
Christopher Lameter <cl@linux.com>, Shuah Khan <shuah@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Elena Reshetova <elena.reshetova@intel.com>,
linux-arch@vger.kernel.org, Tycho Andersen <tycho@tycho.ws>,
linux-nvdimm@lists.01.org, Will Deacon <will@kernel.org>,
x86@kernel.org, linux-riscv@lists.infradead.org,
Mike Rapoport <rppt@linux.ibm.com>,
Ingo Molnar <mingo@redhat.com>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Palmer Dabbelt <palmerdabbelt@google.com>,
Arnd Bergmann <arnd@arndb.de>,
James Bottomley <jejb@linux.ibm.com>,
Hagen Paul Pfeifer <hagen@jauu.net>,
Borislav Petkov <bp@alien8.de>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andy Lutomirski <luto@kernel.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Dan Williams <dan.j.williams@intel.com>,
linux-arm-kernel@lists.infradead.org, linux-api@vger.kernel.org,
linux-kernel@vger.kernel.org, Palmer Dabbelt <palmer@dabbelt.com>,
linux-fsdevel@vger.kernel.org, Shakeel Butt <shakeelb@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Roman Gushchin <guro@fb.com>
Subject: Re: [PATCH v16 08/11] secretmem: add memcg accounting
Date: Tue, 26 Jan 2021 14:48:38 +0000 [thread overview]
Message-ID: <20210126144838.GL308988@casper.infradead.org> (raw)
In-Reply-To: <20210125213817.GM6332@kernel.org>
On Mon, Jan 25, 2021 at 11:38:17PM +0200, Mike Rapoport wrote:
> I cannot use __GFP_ACCOUNT because cma_alloc() does not use gfp.
> Besides, kmem accounting with __GFP_ACCOUNT does not seem
> to update stats and there was an explicit request for statistics:
>
> https://lore.kernel.org/lkml/CALo0P13aq3GsONnZrksZNU9RtfhMsZXGWhK1n=xYJWQizCd4Zw@mail.gmail.com/
>
> As for (ab)using NR_SLAB_UNRECLAIMABLE_B, as it was already discussed here:
>
> https://lore.kernel.org/lkml/20201129172625.GD557259@kernel.org/
>
> I think that a dedicated stats counter would be too much at the moment and
> NR_SLAB_UNRECLAIMABLE_B is the only explicit stat for unreclaimable memory.
That's not true -- Mlocked is also unreclaimable. And doesn't this
feel more like mlocked memory than unreclaimable slab? It's also
Unevictable, so could be counted there instead.
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next prev parent reply other threads:[~2021-01-26 14:52 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-21 12:27 [PATCH v16 00/11] mm: introduce memfd_secret system call to create "secret" memory areas Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 01/11] mm: add definition of PMD_PAGE_ORDER Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 02/11] mmap: make mlock_future_check() global Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 03/11] riscv/Kconfig: make direct map manipulation options depend on MMU Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 04/11] set_memory: allow set_direct_map_*_noflush() for multiple pages Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 05/11] set_memory: allow querying whether set_direct_map_*() is actually enabled Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 06/11] mm: introduce memfd_secret system call to create "secret" memory areas Mike Rapoport
2021-01-25 17:01 ` Michal Hocko
2021-01-25 21:36 ` Mike Rapoport
2021-01-26 7:16 ` Michal Hocko
2021-01-26 8:33 ` Mike Rapoport
2021-01-26 9:00 ` Michal Hocko
2021-01-26 9:20 ` Mike Rapoport
2021-01-26 9:49 ` Michal Hocko
2021-01-26 9:53 ` David Hildenbrand
2021-01-26 10:19 ` Michal Hocko
2021-01-26 9:20 ` Michal Hocko
2021-02-03 12:15 ` Michal Hocko
2021-02-04 11:34 ` Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 07/11] secretmem: use PMD-size pages to amortize direct map fragmentation Mike Rapoport
2021-01-26 11:46 ` Michal Hocko
2021-01-26 11:56 ` David Hildenbrand
2021-01-26 12:08 ` Michal Hocko
2021-01-28 9:22 ` Mike Rapoport
2021-01-28 13:01 ` Michal Hocko
2021-01-28 13:28 ` Christoph Lameter
2021-01-28 13:49 ` Michal Hocko
2021-01-28 15:56 ` Christoph Lameter
2021-01-28 16:23 ` Michal Hocko
2021-01-28 15:28 ` James Bottomley
2021-01-29 7:03 ` Mike Rapoport
2021-01-28 21:05 ` James Bottomley
2021-01-29 7:53 ` Michal Hocko
2021-01-29 8:23 ` Michal Hocko
2021-02-01 16:56 ` James Bottomley
2021-02-02 9:35 ` Michal Hocko
2021-02-02 12:48 ` Mike Rapoport
2021-02-02 13:14 ` David Hildenbrand
2021-02-02 13:32 ` Michal Hocko
2021-02-02 14:12 ` David Hildenbrand
2021-02-02 14:22 ` Michal Hocko
2021-02-02 14:26 ` David Hildenbrand
2021-02-02 14:32 ` Michal Hocko
2021-02-02 14:34 ` David Hildenbrand
2021-02-02 18:15 ` Mike Rapoport
2021-02-02 18:55 ` James Bottomley
2021-02-03 12:09 ` Michal Hocko
2021-02-04 11:31 ` Mike Rapoport
2021-02-02 13:27 ` Michal Hocko
2021-02-02 19:10 ` Mike Rapoport
2021-02-03 9:12 ` Michal Hocko
2021-02-04 9:58 ` Mike Rapoport
2021-02-04 13:02 ` Michal Hocko
2021-01-29 7:21 ` Mike Rapoport
2021-01-29 8:51 ` Michal Hocko
2021-02-02 14:42 ` David Hildenbrand
2021-01-21 12:27 ` [PATCH v16 08/11] secretmem: add memcg accounting Mike Rapoport
2021-01-25 16:17 ` Matthew Wilcox
2021-01-25 17:18 ` Shakeel Butt
2021-01-25 21:35 ` Mike Rapoport
2021-01-28 15:07 ` Shakeel Butt
2021-01-25 16:54 ` Michal Hocko
2021-01-25 21:38 ` Mike Rapoport
2021-01-26 7:31 ` Michal Hocko
2021-01-26 8:56 ` Mike Rapoport
2021-01-26 9:15 ` Michal Hocko
2021-01-26 14:48 ` Matthew Wilcox [this message]
2021-01-26 15:05 ` Michal Hocko
2021-01-27 18:42 ` Roman Gushchin
2021-01-28 7:58 ` Michal Hocko
2021-01-28 14:05 ` Shakeel Butt
2021-01-28 14:22 ` Michal Hocko
2021-01-28 14:57 ` Shakeel Butt
2021-01-21 12:27 ` [PATCH v16 09/11] PM: hibernate: disable when there are active secretmem users Mike Rapoport
2021-01-21 12:27 ` [PATCH v16 10/11] arch, mm: wire up memfd_secret system call where relevant Mike Rapoport
2021-01-25 18:18 ` Catalin Marinas
2021-01-21 12:27 ` [PATCH v16 11/11] secretmem: test: add basic selftest for memfd_secret(2) Mike Rapoport
2021-01-21 22:18 ` [PATCH v16 00/11] mm: introduce memfd_secret system call to create "secret" memory areas Andrew Morton
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