Re: [PATCH] maple_tree: Fix build failure with W=1 and LLVM=1

[Matthew Wilcox]

On Fri, May 03, 2024 at 09:01:06PM +0800, Kuan-Wei Chiu wrote:
> 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?

just don't use W=1 and clang.