Re: [RFC PATCH 2/2] cifs: Implement cache I/O by accessing the cache directly

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

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Hi David,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on cifs/for-next]
[also build test WARNING on linus/master v5.17-rc1 next-20220124]
[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]

url:    https://github.com/0day-ci/linux/commits/David-Howells/cifs-Transition-from-readpages-to-readahead/20220125-010247
base:   git://git.samba.org/sfrench/cifs-2.6.git for-next
config: x86_64-randconfig-s022-20220124 (https://download.01.org/0day-ci/archive/20220125/202201250805.MGfPuo1x-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/0day-ci/linux/commit/ad0df70284e96423c577eb30a366eb814888379b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review David-Howells/cifs-Transition-from-readpages-to-readahead/20220125-010247
        git checkout ad0df70284e96423c577eb30a366eb814888379b
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/vfio/pci/ fs/cifs/ mm/kasan/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
   fs/cifs/file.c: note: in included file:
>> fs/cifs/fscache.h:143:21: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long *_data_first @@     got unsigned long @@
   fs/cifs/fscache.h:143:21: sparse:     expected unsigned long *_data_first
   fs/cifs/fscache.h:143:21: sparse:     got unsigned long
>> fs/cifs/fscache.h:144:26: sparse: sparse: Using plain integer as NULL pointer

vim +143 fs/cifs/fscache.h

   137	
   138	static inline int cifs_fscache_query_occupancy(struct inode *inode,
   139						       pgoff_t first, unsigned nr_pages,
   140						       pgoff_t *_data_first,
   141						       unsigned int *_data_nr_pages)
   142	{
 > 143		_data_first = ULONG_MAX;
 > 144		_data_nr_pages = 0;
   145		return -ENOBUFS;
   146	}
   147	

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0-DAY CI Kernel Test Service, Intel Corporation
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