Hi Davidlohr,

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on v4.11-rc1 next-20170309]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Davidlohr-Bueso/locking-Introduce-range-reader-writer-lock/20170309-140444
config: i386-randconfig-i1-201710 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   drivers/staging/lustre/lustre/llite/file.c: In function 'll_file_io_generic':
>> drivers/staging/lustre/lustre/llite/file.c:1072:4: warning: large integer 
>> implicitly truncated to unsigned type [-Woverflow]
       range_rwlock_init(&range, 0, LUSTRE_EOF);
       ^

vim +1072 drivers/staging/lustre/lustre/llite/file.c

  1056          struct cl_io     *io;
  1057          ssize_t result = 0;
  1058          int rc = 0;
  1059  
  1060          CDEBUG(D_VFSTRACE, "file: %pD, type: %d ppos: %llu, count: 
%zu\n",
  1061                 file, iot, *ppos, count);
  1062  
  1063  restart:
  1064          io = vvp_env_thread_io(env);
  1065          ll_io_init(io, file, iot == CIT_WRITE);
  1066  
  1067          if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
  1068                  struct vvp_io *vio = vvp_env_io(env);
  1069                  bool range_locked = false;
  1070  
  1071                  if (file->f_flags & O_APPEND)
> 1072                          range_rwlock_init(&range, 0, LUSTRE_EOF);
  1073                  else
  1074                          range_rwlock_init(&range, *ppos, *ppos + count 
- 1);
  1075  
  1076                  vio->vui_fd  = LUSTRE_FPRIVATE(file);
  1077                  vio->vui_iter = args->u.normal.via_iter;
  1078                  vio->vui_iocb = args->u.normal.via_iocb;
  1079                  /*
  1080                   * Direct IO reads must also take range lock,

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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