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Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uM6e3-000000011tc-2LKz; Mon, 02 Jun 2025 15:00:11 +0000 Date: Mon, 2 Jun 2025 16:00:11 +0100 From: Matthew Wilcox To: kernel test robot Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Andrew Morton , Linux Memory Management List Subject: Re: [akpm-mm:mm-stable 290/329] lib/iov_iter.c:474:7: error: call to undeclared function 'folio_test_partial_kmap'; ISO C99 and later do not support implicit function declarations Message-ID: References: <202506022027.IYQzZghL-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202506022027.IYQzZghL-lkp@intel.com> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: B0A0840021 X-Stat-Signature: 6dehbhez8po6p95tthqjujr1xy81trcu X-Rspam-User: X-HE-Tag: 1748876414-673001 X-HE-Meta: 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 CM4jeURX O9Ti6hyAKdK663uLO4SW1XUAqvfxrEyJzMBAFn7OO6bMahgRoJhjKofYsBl9sB4/QAucVW6RMtswP4hBHFEwwhirSojLP0Vf92B3b4zd7uDvceH+kUiRhExPOfeH+RYjPJO1ysAuBfWd41N77r0PENWk53dOzF1mbt+A06V02hTqgz1Zo5Q3Q/rZCYSzY9sScnCZOzJAvM/kzU+ltnBhU7MxdGUaIN227j4LoPZtuFTE+0QVgH0EAxYdwLZftnYAfH8Y0cX8iAUifIlBqOEPAlT7RJPHWU4rj9z1MGAjxUwV065AdAkm+aPtcj8yLCIdUHbx1/F85xEqZC0U= 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: On Mon, Jun 02, 2025 at 08:12:44PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-stable > head: 0b43b8bc8ef88bb45b018b2d4853d38bfc5ce2a7 > commit: d9736929445e7f4c60f0093af61ff0b52e2d4412 [290/329] iov: remove copy_page_from_iter_atomic() Thanks! > >> lib/iov_iter.c:474:7: error: call to undeclared function 'folio_test_partial_kmap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 474 | if (folio_test_partial_kmap(folio) && It looks like mm-stable is based on the wrong commit. It appears to be based on v6.15-rc6 while folio_test_partial_kmap() was added during the v6.16 merge window. While Linus' tree will never fail to build, anyone ending up on this branch due to a bisect decision will find an unbuildable tree.