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From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Hugh Dickins <hughd@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Yang Shi <shy828301@gmail.com>,
	Wang Yugui <wangyugui@e16-tech.com>,
	Matthew Wilcox <willy@infradead.org>,
	Naoya Horiguchi <naoya.horiguchi@nec.com>,
	Alistair Popple <apopple@nvidia.com>,
	Ralph Campbell <rcampbell@nvidia.com>, Zi Yan <ziy@nvidia.com>,
	Miaohe Lin <linmiaohe@huawei.com>,
	Minchan Kim <minchan@kernel.org>, Jue Wang <juew@google.com>,
	Peter Xu <peterx@redhat.com>, Jan Kara <jack@suse.cz>,
	Shakeel Butt <shakeelb@google.com>,
	Oscar Salvador <osalvador@suse.de>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 10/10] mm: hwpoison_user_mappings() try_to_unmap() with TTU_SYNC
Date: Wed, 9 Jun 2021 13:27:51 +0300	[thread overview]
Message-ID: <20210609102751.kl4ywrx3bybyg46w@box.shutemov.name> (raw)
In-Reply-To: <329c28ed-95df-9a2c-8893-b444d8a6d340@google.com>

On Tue, Jun 08, 2021 at 09:30:00PM -0700, Hugh Dickins wrote:
> TTU_SYNC prevents an unlikely race, when try_to_unmap() returns shortly
> before the page is accounted as unmapped.  It is unlikely to coincide
> with hwpoisoning, but now that we have the flag, hwpoison_user_mappings()
> would do well to use it.
> 
> Signed-off-by: Hugh Dickins <hughd@google.com>

Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

-- 
 Kirill A. Shutemov

  reply	other threads:[~2021-06-09 10:28 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <af88612-1473-2eaa-903-8d1a448b26@google.com>
2021-06-09  4:08 ` [PATCH v2 02/10] mm/thp: make is_huge_zero_pmd() safe and quicker Hugh Dickins
2021-06-09  4:08   ` Hugh Dickins
2021-06-09 10:22   ` Kirill A. Shutemov
2021-06-09 16:56   ` Yang Shi
2021-06-09 16:56     ` Yang Shi
2021-06-09  4:14 ` [PATCH v2 04/10] mm/thp: fix vma_address() if virtual address below file offset Hugh Dickins
2021-06-09  4:14   ` Hugh Dickins
2021-06-09  4:16 ` [PATCH v2 05/10] mm/thp: fix page_address_in_vma() on file THP tails Hugh Dickins
2021-06-09  4:16   ` Hugh Dickins
2021-06-09  4:19 ` [PATCH v2 06/10] mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page() Hugh Dickins
2021-06-09  4:19   ` Hugh Dickins
2021-06-09 17:02   ` Yang Shi
2021-06-09 17:02     ` Yang Shi
2021-06-09 21:11     ` Hugh Dickins
2021-06-09 21:11       ` Hugh Dickins
2021-06-09 21:16       ` [PATCH v3 " Hugh Dickins
2021-06-09 21:16         ` Hugh Dickins
2021-06-09 21:51         ` Yang Shi
2021-06-09 21:51           ` Yang Shi
2021-06-09  4:22 ` [PATCH v2 07/10] mm: thp: replace DEBUG_VM BUG with VM_WARN when unmap fails for split Hugh Dickins
2021-06-09  4:22   ` Hugh Dickins
2021-06-09  4:25 ` [PATCH v2 08/10] mm: rmap: make try_to_unmap() void function Hugh Dickins
2021-06-09  4:25   ` Hugh Dickins
2021-06-10  7:57   ` HORIGUCHI NAOYA(堀口　直也)
2021-06-09  4:27 ` [PATCH v2 09/10] mm/thp: remap_page() is only needed on anonymous THP Hugh Dickins
2021-06-09  4:27   ` Hugh Dickins
2021-06-09  4:30 ` [PATCH v2 10/10] mm: hwpoison_user_mappings() try_to_unmap() with TTU_SYNC Hugh Dickins
2021-06-09  4:30   ` Hugh Dickins
2021-06-09 10:27   ` Kirill A. Shutemov [this message]
2021-06-10  7:38   ` HORIGUCHI NAOYA(堀口　直也)
     [not found] ` <20210610151505.d0124033e55bda07fa3d4408@linux-foundation.org>
     [not found]   ` <2014832.e7zRqyNrDn@nvdebian>
2021-06-11  0:15     ` [PATCH v2 00/10] mm/thp: fix THP splitting unmap BUGs and related Hugh Dickins
2021-06-11  7:28       ` Alistair Popple
2021-06-11 20:56         ` Hugh Dickins
2021-06-11 20:56           ` Hugh Dickins
2021-06-12  7:34           ` Alistair Popple
2021-06-12  8:20             ` Hugh Dickins
2021-06-12  8:20               ` Hugh Dickins

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