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b=egPHiuC/UC4UD4nFojr3h+78xh94q0eLp3Zq21uBe8/LCpwZK5VBHhPh9biDCwsjmCVJnC CFyJ0T1fh3cJfPengyIw1VXIKESumJNM2n9UFWGwG0KkXgd34hp2B/yF1MQZjSAYiQ/d60 8PWe6PSIJFyJHf2TRZISebDIzWprvPBpvm55mgMY+d3Ib8JIirsbnKbO7ECSm+j9b5DenO NJa+UHGLhlCaA8/WWL7kOYYRzgNKmLAq/YaBH5oieeCCQGoPB7YE+okWPLuEmWJhY6T4Rj zmwT6YJssNSgb9Sb+7caUlK2ahGNWZaFZgv6Trd5sguwsYKpqxLITSfw0KCw1g== Received: from localhost (gaia.codewreck.org [local]) by gaia.codewreck.org (OpenSMTPD) with ESMTPA id 2a270480; Wed, 13 Aug 2025 05:34:40 +0000 (UTC) Date: Wed, 13 Aug 2025 14:34:25 +0900 From: Dominique Martinet To: Nathan Chancellor Cc: kernel test robot , Dominique Martinet via B4 Relay , "Matthew Wilcox (Oracle)" , Christian Brauner , David Howells , Alexander Viro , Andrew Morton , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Maximilian Bosch , Ryan Lahfa , Christian Theune , Arnout Engelen , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 1/2] iov_iter: iterate_folioq: fix handling of offset >= folio size Message-ID: References: <20250811-iot_iter_folio-v1-1-d9c223adf93c@codewreck.org> <202508120250.Eooq2ydr-lkp@intel.com> <20250813051633.GA3895812@ax162> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20250813051633.GA3895812@ax162> X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 037D4180009 X-Stat-Signature: hpegt4bxscu3wgc8qtbbn8n7i4n8xifq X-Rspam-User: X-HE-Tag: 1755063289-64477 X-HE-Meta: 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 A1J3e4UU 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 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: List-Subscribe: List-Unsubscribe: Nathan Chancellor wrote on Tue, Aug 12, 2025 at 10:16:33PM -0700: > > 1 warning generated. > > I see this in -next now, should remain be zero initialized or is there > some other fix that is needed? A zero-initialization is fine, I sent a v2 with zero-initialization fixed yesterday: https://lkml.kernel.org/r/20250812-iot_iter_folio-v2-1-f99423309478@codewreck.org (and I'll send a v3 with the goto replaced with a bigger if later today as per David's request) I assume Andrew will pick it up eventually? -- Dominique Martinet | Asmadeus