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Fri, 03 May 2024 06:01:10 -0700 (PDT) Received: from visitorckw-System-Product-Name ([140.113.216.168]) by smtp.gmail.com with ESMTPSA id sz15-20020a17090b2d4f00b002aff85b97dfsm4977761pjb.27.2024.05.03.06.01.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 May 2024 06:01:10 -0700 (PDT) Date: Fri, 3 May 2024 21:01:06 +0800 From: Kuan-Wei Chiu To: Matthew Wilcox Cc: akpm@linux-foundation.org, Liam.Howlett@oracle.com, nathan@kernel.org, ndesaulniers@google.com, morbo@google.com, justinstitt@google.com, linux-kernel@vger.kernel.org, maple-tree@lists.infradead.org, linux-mm@kvack.org, llvm@lists.linux.dev, jserv@ccns.ncku.edu.tw Subject: Re: [PATCH] maple_tree: Fix build failure with W=1 and LLVM=1 Message-ID: References: <20240503095027.747838-1-visitorckw@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam01 X-Stat-Signature: hkzo14smebrf567jopgorfwu6gmw9foy X-Rspam-User: X-Rspamd-Queue-Id: 9519D80002 X-HE-Tag: 1714741275-566169 X-HE-Meta: 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 1FldYkT7 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.007913, 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 Fri, May 03, 2024 at 01:20:32PM +0100, Matthew Wilcox wrote: > On Fri, May 03, 2024 at 05:50:27PM +0800, Kuan-Wei Chiu wrote: > > When compiling library code using "make W=1 LLVM=1 lib/", clang > > generated the following compilation errors: > > > > lib/maple_tree.c:351:21: error: unused function 'mte_set_full' [-Werror,-Wunused-function] > > static inline void *mte_set_full(const struct maple_enode *node) > > Uh, clang is wrong to flag these as an error. They're just not used > yet. I think it's because the kernel defaults to treating all compilation warnings as errors. If you turn off the option to treat compilation warnings as errors, they will be treated as warnings instead. Should I update my commit message to change compilation errors to compilation warnings? Regards, Kuan-Wei