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From: Joao Martins <joao.m.martins@oracle.com>
To: "HORIGUCHI NAOYA(堀口 直也)" <naoya.horiguchi@nec.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
	Dan Williams <dan.j.williams@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Matthew Wilcox <willy@infradead.org>,
	Jason Gunthorpe <jgg@ziepe.ca>,
	John Hubbard <jhubbard@nvidia.com>,
	Jane Chu <jane.chu@oracle.com>,
	Muchun Song <songmuchun@bytedance.com>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jonathan Corbet <corbet@lwn.net>,
	"nvdimm@lists.linux.dev" <nvdimm@lists.linux.dev>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>
Subject: Re: [PATCH v2 01/14] memory-failure: fetch compound_head after pgmap_pfn_valid()
Date: Mon, 21 Jun 2021 14:50:07 +0100	[thread overview]
Message-ID: <c120de3a-84b6-931b-36fe-526e7b9fcdfb@oracle.com> (raw)
In-Reply-To: <20210620235639.GA2590787@hori.linux.bs1.fc.nec.co.jp>

On 6/21/21 12:56 AM, HORIGUCHI NAOYA(堀口 直也) wrote:
> On Thu, Jun 17, 2021 at 07:44:54PM +0100, Joao Martins wrote:
>> memory_failure_dev_pagemap() at the moment assumes base pages (e.g.
>> dax_lock_page()).  For pagemap with compound pages fetch the
>> compound_head in case a tail page memory failure is being handled.
>>
>> Currently this is a nop, but in the advent of compound pages in
>> dev_pagemap it allows memory_failure_dev_pagemap() to keep working.
>>
>> Reported-by: Jane Chu <jane.chu@oracle.com>
>> Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
> 
> Looks good to me.
> 
> Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
> 
Thanks!

  reply	other threads:[~2021-06-21 13:50 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-17 18:44 [PATCH v2 00/14] mm, sparse-vmemmap: Introduce compound pagemaps Joao Martins
2021-06-17 18:44 ` [PATCH v2 01/14] memory-failure: fetch compound_head after pgmap_pfn_valid() Joao Martins
2021-06-20 23:56   ` HORIGUCHI NAOYA(堀口 直也)
2021-06-21 13:50     ` Joao Martins [this message]
2021-06-17 18:44 ` [PATCH v2 02/14] mm/page_alloc: split prep_compound_page into head and tail subparts Joao Martins
2021-07-13  0:02   ` Mike Kravetz
2021-07-13  1:11     ` Joao Martins
2021-06-17 18:44 ` [PATCH v2 03/14] mm/page_alloc: refactor memmap_init_zone_device() page init Joao Martins
2021-06-17 18:44 ` [PATCH v2 04/14] mm/memremap: add ZONE_DEVICE support for compound pages Joao Martins
2021-06-17 18:44 ` [PATCH v2 05/14] mm/sparse-vmemmap: add a pgmap argument to section activation Joao Martins
2021-06-17 18:44 ` [PATCH v2 06/14] mm/sparse-vmemmap: refactor core of vmemmap_populate_basepages() to helper Joao Martins
2021-06-17 18:45 ` [PATCH v2 07/14] mm/hugetlb_vmemmap: move comment block to Documentation/vm Joao Martins
2021-06-21 13:12   ` [External] " Muchun Song
2021-06-21 13:42     ` Joao Martins
2021-07-13  0:14       ` Mike Kravetz
2021-07-13  1:11         ` Joao Martins
2021-06-17 18:45 ` [PATCH v2 08/14] mm/sparse-vmemmap: populate compound pagemaps Joao Martins
2021-06-17 18:45 ` [PATCH v2 09/14] mm/page_alloc: reuse tail struct pages for " Joao Martins
2021-06-17 18:45 ` [PATCH v2 10/14] device-dax: use ALIGN() for determining pgoff Joao Martins
2021-06-17 18:45 ` [PATCH v2 11/14] device-dax: ensure dev_dax->pgmap is valid for dynamic devices Joao Martins
2021-06-17 18:45 ` [PATCH v2 12/14] device-dax: compound pagemap support Joao Martins
2021-06-17 18:45 ` [PATCH v2 13/14] mm/gup: grab head page refcount once for group of subpages Joao Martins
2021-06-17 18:45 ` [PATCH v2 14/14] mm/sparse-vmemmap: improve memory savings for compound pud geometry Joao Martins

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