Re: [PATCH] fs: Add uoff_t

[kernel test robot <lkp@intel.com>]

Hi Matthew,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on arnd-asm-generic/master linus/master v6.18-rc6 next-20251118]
[cannot apply to brauner-vfs/vfs.all]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/fs-Add-uoff_t/20251118-233038
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20251118152935.3735484-1-willy%40infradead.org
patch subject: [PATCH] fs: Add uoff_t
config: sh-allnoconfig (https://download.01.org/0day-ci/archive/20251119/202511190058.bebeyFBx-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511190058.bebeyFBx-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511190058.bebeyFBx-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/shmem.c:5810:6: error: conflicting types for 'shmem_truncate_range'; have 'void(struct inode *, loff_t,  loff_t)' {aka 'void(struct inode *, long long int,  long long int)'}
    5810 | void shmem_truncate_range(struct inode *inode, loff_t lstart, loff_t lend)
         |      ^~~~~~~~~~~~~~~~~~~~
   In file included from mm/shmem.c:36:
   include/linux/shmem_fs.h:129:6: note: previous declaration of 'shmem_truncate_range' with type 'void(struct inode *, loff_t,  uoff_t)' {aka 'void(struct inode *, long long int,  long long unsigned int)'}
     129 | void shmem_truncate_range(struct inode *inode, loff_t start, uoff_t end);
         |      ^~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/linkage.h:7,
                    from arch/sh/include/asm/bug.h:5,
                    from include/linux/bug.h:5,
                    from include/linux/vfsdebug.h:5,
                    from include/linux/fs.h:5,
                    from mm/shmem.c:24:
   mm/shmem.c:5814:19: error: conflicting types for 'shmem_truncate_range'; have 'void(struct inode *, loff_t,  loff_t)' {aka 'void(struct inode *, long long int,  long long int)'}
    5814 | EXPORT_SYMBOL_GPL(shmem_truncate_range);
         |                   ^~~~~~~~~~~~~~~~~~~~
   include/linux/export.h:76:28: note: in definition of macro '__EXPORT_SYMBOL'
      76 |         extern typeof(sym) sym;                                 \
         |                            ^~~
   include/linux/export.h:90:41: note: in expansion of macro '_EXPORT_SYMBOL'
      90 | #define EXPORT_SYMBOL_GPL(sym)          _EXPORT_SYMBOL(sym, "GPL")
         |                                         ^~~~~~~~~~~~~~
   mm/shmem.c:5814:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
    5814 | EXPORT_SYMBOL_GPL(shmem_truncate_range);
         | ^~~~~~~~~~~~~~~~~
   include/linux/shmem_fs.h:129:6: note: previous declaration of 'shmem_truncate_range' with type 'void(struct inode *, loff_t,  uoff_t)' {aka 'void(struct inode *, long long int,  long long unsigned int)'}
     129 | void shmem_truncate_range(struct inode *inode, loff_t start, uoff_t end);
         |      ^~~~~~~~~~~~~~~~~~~~
   mm/shmem.c: In function '__shmem_file_setup':
   mm/shmem.c:5838:23: warning: unused variable 'flags' [-Wunused-variable]
    5838 |         unsigned long flags = (vm_flags & VM_NORESERVE) ? SHMEM_F_NORESERVE : 0;
         |                       ^~~~~


vim +5810 mm/shmem.c

c01d5b300774d1 Hugh Dickins 2016-07-26  5809  
41ffe5d5ceef7f Hugh Dickins 2011-08-03 @5810  void shmem_truncate_range(struct inode *inode, loff_t lstart, loff_t lend)
94c1e62df4494b Hugh Dickins 2011-06-27  5811  {
41ffe5d5ceef7f Hugh Dickins 2011-08-03  5812  	truncate_inode_pages_range(inode->i_mapping, lstart, lend);
94c1e62df4494b Hugh Dickins 2011-06-27  5813  }
94c1e62df4494b Hugh Dickins 2011-06-27  5814  EXPORT_SYMBOL_GPL(shmem_truncate_range);
94c1e62df4494b Hugh Dickins 2011-06-27  5815  

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