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From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
To: linux-mm@kvack.org
Cc: Michal Hocko <mhocko@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	xishi.qiuxishi@alibaba-inc.com, zy.zhengyi@alibaba-inc.com,
	linux-kernel@vger.kernel.org
Subject: [PATCH v1 0/2] mm: soft-offline: fix race against page allocation
Date: Fri, 13 Jul 2018 12:26:04 +0900	[thread overview]
Message-ID: <1531452366-11661-1-git-send-email-n-horiguchi@ah.jp.nec.com> (raw)

Xishi recently reported the issue about race on reusing the target pages
of soft offlining.
Discussion and analysis showed that we need make sure that setting PG_hwpoison
should be done in the right place under zone->lock for soft offline.
1/2 handles free hugepage's case, and 2/2 hanldes free buddy page's case.

Thanks,
Naoya Horiguchi
---
Summary:

Naoya Horiguchi (2):
      mm: fix race on soft-offlining free huge pages
      mm: soft-offline: close the race against page allocation

 include/linux/page-flags.h |  5 +++++
 include/linux/swapops.h    | 10 ----------
 mm/hugetlb.c               | 11 +++++------
 mm/memory-failure.c        | 44 +++++++++++++++++++++++++++++++++++---------
 mm/migrate.c               |  4 +---
 mm/page_alloc.c            | 29 +++++++++++++++++++++++++++++
 6 files changed, 75 insertions(+), 28 deletions(-)

             reply	other threads:[~2018-07-13  3:26 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-13  3:26 Naoya Horiguchi [this message]
2018-07-13  3:26 ` [PATCH v1 1/2] mm: fix race on soft-offlining free huge pages Naoya Horiguchi
2018-07-13  5:23   ` 回复：[PATCH " 裘稀石(稀石)
2018-07-13  5:28     ` 裘稀石(稀石)
2018-07-13 20:35   ` [PATCH " Andrew Morton
2018-07-17  0:25     ` Naoya Horiguchi
2018-07-13  3:26 ` [PATCH v1 2/2] mm: soft-offline: close the race against page allocation Naoya Horiguchi
2018-07-13 20:40   ` Andrew Morton
2018-07-17  0:27     ` Naoya Horiguchi

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