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Shutemov" To: Thomas =?utf-8?Q?Hellstr=C3=B6m_=28VMware=29?= Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, torvalds@linux-foundation.org, Thomas Hellstrom , Matthew Wilcox , Will Deacon , Peter Zijlstra , Rik van Riel , Minchan Kim , Michal Hocko , Huang Ying , =?utf-8?B?SsOpcsO0bWU=?= Glisse Subject: Re: [PATCH v5 2/8] mm: pagewalk: Take the pagetable lock in walk_pte_range() Message-ID: <20191011125652.2b7ptnyeeso4qwwj@box> References: <20191010124314.40067-1-thomas_os@shipmail.org> <20191010124314.40067-3-thomas_os@shipmail.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20191010124314.40067-3-thomas_os@shipmail.org> User-Agent: NeoMutt/20180716 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Oct 10, 2019 at 02:43:08PM +0200, Thomas Hellstr=F6m (VMware) wro= te: > From: Thomas Hellstrom >=20 > Without the lock, anybody modifying a pte from within this function mig= ht > have it concurrently modified by someone else. >=20 > Cc: Matthew Wilcox > Cc: Will Deacon > Cc: Peter Zijlstra > Cc: Rik van Riel > Cc: Minchan Kim > Cc: Michal Hocko > Cc: Huang Ying > Cc: J=E9r=F4me Glisse > Cc: Kirill A. Shutemov > Suggested-by: Linus Torvalds > Signed-off-by: Thomas Hellstrom Acked-by: Kirill A. Shutemov --=20 Kirill A. Shutemov