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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qYyq1-0081Ia-6F; Thu, 24 Aug 2023 01:08:41 +0000 Date: Thu, 24 Aug 2023 02:08:41 +0100 From: Matthew Wilcox To: kernel test robot Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Andrew Morton Subject: Re: [linux-next:master 11462/12208] mm/internal.h:709:3: error: implicit declaration of function 'release_fault_lock' is invalid in C99 Message-ID: References: <202308240613.DrqV4VT4-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202308240613.DrqV4VT4-lkp@intel.com> X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 297A71C0005 X-Stat-Signature: fk7gugo8a5fdcmr6ihask5g41aszkt1x X-HE-Tag: 1692839340-915661 X-HE-Meta: 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 NsD6c7zf 6UiDzzmCkZxzyaMgyjRjTb9tmay2QvL4uMI4Y/eOdlgsiS9FkPoCJ9vj2pWw/guHd0ig6xeJJSqMHiEO6Mhp5uHEr3TzkbXYYmnkS+Ri6OT+utYK0051b2FwRdWAnCNz/EkDmgobysDCjLaUqdvy08+FR8QZyRv28W5cEi6jV8GWWKvCBFC/b7SXAkam/gFUeUaiN9EwZ98YDOvLEGjgPEglu95JyH0K3zypLWvl40RsgzMLwapCgEp+AASzaxgPY1Q09nLNc2Vc7dGHCgpdssbQPxEunlblKDL5SApIh61FZ1mj1wirkL17CB0r3ohsM3VP4 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, Aug 24, 2023 at 06:51:10AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: e3f80d3eae76c3557b3c9b5938ad01c0e6cf25ec > commit: 0790e1e2b1b71ba357e89e779451efe79dff28e6 [11462/12208] mm: allow fault_dirty_shared_page() to be called under the VMA lock > config: um-allyesconfig (https://download.01.org/0day-ci/archive/20230824/202308240613.DrqV4VT4-lkp@intel.com/config) ... > In file included from mm/filemap.c:50: > >> mm/internal.h:709:3: error: implicit declaration of function 'release_fault_lock' is invalid in C99 [-Werror,-Wimplicit-function-declaration] > release_fault_lock(vmf); > ^ > 12 warnings and 1 error generated. This is a patch ordering issue (and thus bisection hazard) release_fault_lock() is introduced in d169f9691c08 ("mm: handle swap page faults under per-VMA lock") which is currently ordered after 0790e1e2b1b7. It's architecture independent, and ARCH=um is not the relevant part, nor is clang implicated.