From: Andrea Arcangeli <aarcange@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, Rik van Riel <riel@redhat.com>,
Hugh Dickins <hughd@google.com>,
Mel Gorman <mgorman@techsingularity.net>,
Jan Vorlicek <janvorli@microsoft.com>,
Aditya Mandaleeka <adityam@microsoft.com>
Subject: [PATCH 0/1] mm: vma_merge: fix vm_page_prot SMP race condition against rmap_walk v2
Date: Sat, 17 Sep 2016 18:05:14 +0200 [thread overview]
Message-ID: <1474128315-22726-1-git-send-email-aarcange@redhat.com> (raw)
In-Reply-To: <20160916205441.GB4743@redhat.com>
This version 2 supersedes the 2/2 patch I previously sent in this
thread, and restricts the fix to case 8 as all other vma_merge cases
were already correct as Hugh pointed out, and the testcase of course
reproduced only case 8.
I verified that this fixes the race condition with the testcase as
good as the v1 patch did.
The code is the same I sent yesterday inline in the reply, but this
further improves a few comments and it's a more proper submit.
Andrea Arcangeli (1):
mm: vma_merge: fix vm_page_prot SMP race condition against rmap_walk
mm/mmap.c | 40 +++++++++++++++++++++++++++++++++++++---
1 file changed, 37 insertions(+), 3 deletions(-)
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next prev parent reply other threads:[~2016-09-17 16:05 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 17:41 [PATCH 0/2] vma_merge vs rmap_walk SMP race condition fix Andrea Arcangeli
2016-09-15 17:41 ` [PATCH 1/2] mm: vm_page_prot: update with WRITE_ONCE/READ_ONCE Andrea Arcangeli
2016-09-15 18:27 ` Rik van Riel
2016-09-15 17:41 ` [PATCH 2/2] mm: vma_merge: fix race vm_page_prot race condition against rmap_walk Andrea Arcangeli
2016-09-15 18:28 ` Rik van Riel
2016-09-16 18:42 ` Hugh Dickins
2016-09-16 20:54 ` Andrea Arcangeli
2016-09-17 16:05 ` Andrea Arcangeli [this message]
2016-09-17 16:05 ` [PATCH 1/1] mm: vma_merge: fix vm_page_prot SMP " Andrea Arcangeli
2016-09-18 0:36 ` Andrea Arcangeli
2016-09-19 18:25 ` [PATCH 1/2] " Andrea Arcangeli
2016-09-19 18:25 ` [PATCH 2/2] mm: vma_adjust: remove superfluous check for next not NULL Andrea Arcangeli
2016-09-22 10:36 ` [PATCH 1/2] mm: vma_merge: fix vm_page_prot SMP race condition against rmap_walk Hugh Dickins
2016-09-23 19:18 ` Andrea Arcangeli
2016-09-23 20:25 ` Hugh Dickins
2016-09-28 5:09 ` [lkp] [mm] 2129957506: kernel BUG at mm/mmap.c:329! kernel test robot
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