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Shutemov" To: Andrew Morton Cc: "Willhalm, Thomas" , Dan Williams , "Bruggeman, Otto G" , "Aneesh Kumar K . V" , linux-mm@kvack.org, x86@kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: Re: [PATCH 0/2] Fix two above-47bit hint address vs. THP bugs Message-ID: <20191223231638.cbewgy7lfx74txde@box> References: <20191220142548.7118-1-kirill.shutemov@linux.intel.com> <20191223142552.d9bd85e588196d17fb90ee2e@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191223142552.d9bd85e588196d17fb90ee2e@linux-foundation.org> User-Agent: NeoMutt/20180716 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 Mon, Dec 23, 2019 at 02:25:52PM -0800, Andrew Morton wrote: > On Fri, 20 Dec 2019 17:25:46 +0300 "Kirill A. Shutemov" wrote: > > > The two get_unmapped_area() implementations have to be fixed to provide > > THP-friendly mappings if above-47bit hint address is specified. > > > > Do we need a cc:stable for these? Yes, please. Otherwise users that use above-47bit hint would regress on number of PMD-mapped THPs. But it's not urgent. It's okay to cook it up in linux-next for a while. -- Kirill A. Shutemov