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d=linuxfoundation.org; s=korg; t=1686211171; bh=QZuWevEGbS7eH2QLlHDqrU/R3vNNbwBkMxJ4axuXrX0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dF3xz25m+LQkLdlwXOwbZZjt1/wv+xR4bFflH2QjCLC+7NriFigEBzeRodOtmVBhJ v2yYDfpCcf02TcZrie+aIln2HvEM9QmHJcxtTKElYUGlHKrf9CRezjgXJ9GKaYjbtg czaVrAG6gxS/9Ulo3AwVRZbPDlD6x9AfQYMDu23I= Date: Thu, 8 Jun 2023 09:59:28 +0200 From: Greg Kroah-Hartman To: Andrew Morton Cc: Mike Kravetz , Gerd Hoffmann , Junxiao Chang , kirill.shutemov@linux.intel.com, mhocko@suse.com, jmarchan@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, muchun.song@linux.dev, Vivek Kasireddy , Dongwon Kim , James Houghton , dri-devel@lists.freedesktop.org Subject: Re: [PATCH] mm: fix hugetlb page unmap count balance issue Message-ID: <2023060803-trailing-ladder-2d53@gregkh> References: <20230512072036.1027784-1-junxiao.chang@intel.com> <20230512232947.GA3927@monkey> <20230515170259.GA3848@monkey> <20230516223440.GA30624@monkey> <20230607120312.6da5cea7677ec1a3da35b92c@linux-foundation.org> <20230607205310.GA4122@monkey> <20230607140001.6685b0a058511f125a005da4@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230607140001.6685b0a058511f125a005da4@linux-foundation.org> X-Rspamd-Queue-Id: 17CC51C0006 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: wst17zudgt7ats4heyt8pxyqubq11csa X-HE-Tag: 1686211172-278901 X-HE-Meta: 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 BQbC9gMR Oay+ZO2JAJQYBa8xPSzTLiQnOxaReeuK5CrMIaQRqNZZTvAD82s14ejoGkZVv1KidceCoOaL2JQLAUuugthLpOzD3a9vxkU8IoDLRSBUlOSkB6aQtJrilWbNFYiNhxpYta/5xLjmmD88tKJufhBLUxlzMZ5aiLSWtcxsgaujNd1bdBSiAUKsEQ1/QBQ609gFJy8WEiHe/2JUp1CCbgX4ci/D4+x6XGkSLdr7Y44cLQgBzl9zycgnKaqon9c12OTO5PyjDCd4PXN6hWo3r8a3C1jWxTl/LuS5BNLuKfLiKw05dyDAWSPXMhilrHNb8wg/F+PrIGq9kaItEyYRMuEDP45SdXJCaaC9qMidzjME59YXTDwgsbsGgQnrMpWT7B8F8fSrF2Lvk3UA9fLc= 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 Wed, Jun 07, 2023 at 02:00:01PM -0700, Andrew Morton wrote: > On Wed, 7 Jun 2023 13:53:10 -0700 Mike Kravetz wrote: > > > > > > > BUGs aren't good. Can we please find a way to push this along? > > > > > > Have we heard anything from any udmabuf people? > > > > > > > I have not heard anything. When this issue popped up, it took me by surprise. > > > > udmabuf maintainer (Gerd Hoffmann), the people who added hugetlb support and > > the list where udmabuf was developed (dri-devel@lists.freedesktop.org) have > > been on cc. > > Maybe Greg can suggest a way forward. I'm guessing that no one is using this code then, so why don't we just remove it entirely? thanks, greg k-h