Re: [PATCH 1/2] squashfs: add the mount parameter theads=<single|multi|percpu>

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

Hi Xiaoming,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on v6.0-rc1]
[also build test WARNING on linus/master next-20220815]
[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/Xiaoming-Ni/squashfs-Add-the-mount-parameter-threads/20220815-111318
base:    568035b01cfb107af8d2e4bd2fb9aea22cf5b868
config: sparc-randconfig-s042-20220814 (https://download.01.org/0day-ci/archive/20220815/202208151921.Y0vJnA6c-lkp@intel.com/config)
compiler: sparc-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/dcb72eaed7732d884148ce37d23442956296d0d6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Xiaoming-Ni/squashfs-Add-the-mount-parameter-threads/20220815-111318
        git checkout dcb72eaed7732d884148ce37d23442956296d0d6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc SHELL=/bin/bash fs/squashfs/

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

sparse warnings: (new ones prefixed by >>)
>> fs/squashfs/decompressor_multi_percpu.c:85:18: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got void * @@
   fs/squashfs/decompressor_multi_percpu.c:85:18: sparse:     expected void const [noderef] __percpu *__vpp_verify
   fs/squashfs/decompressor_multi_percpu.c:85:18: sparse:     got void *
   fs/squashfs/decompressor_multi_percpu.c:86:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct local_lock_t * @@
   fs/squashfs/decompressor_multi_percpu.c:86:9: sparse:     expected void const [noderef] __percpu *__vpp_verify
   fs/squashfs/decompressor_multi_percpu.c:86:9: sparse:     got struct local_lock_t *
   fs/squashfs/decompressor_multi_percpu.c:91:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct local_lock_t * @@
   fs/squashfs/decompressor_multi_percpu.c:91:9: sparse:     expected void const [noderef] __percpu *__vpp_verify
   fs/squashfs/decompressor_multi_percpu.c:91:9: sparse:     got struct local_lock_t *

vim +85 fs/squashfs/decompressor_multi_percpu.c

d208383d640727 Phillip Lougher  2013-11-18   77  
dcb72eaed7732d Xiaoming Ni      2022-08-15   78  static int squashfs_decompress_percpu(struct squashfs_sb_info *msblk, struct bio *bio,
93e72b3c612adc Philippe Liard   2020-06-01   79  	int offset, int length, struct squashfs_page_actor *output)
d208383d640727 Phillip Lougher  2013-11-18   80  {
dcb72eaed7732d Xiaoming Ni      2022-08-15   81  	struct squashfs_stream_percpu *stream;
fd56200a16c72c Julia Cartwright 2020-05-27   82  	int res;
fd56200a16c72c Julia Cartwright 2020-05-27   83  
dcb72eaed7732d Xiaoming Ni      2022-08-15   84  	preempt_disable();
fd56200a16c72c Julia Cartwright 2020-05-27  @85  	stream = this_cpu_ptr(msblk->stream);
dcb72eaed7732d Xiaoming Ni      2022-08-15   86  	local_lock(&stream->lock);
fd56200a16c72c Julia Cartwright 2020-05-27   87  
93e72b3c612adc Philippe Liard   2020-06-01   88  	res = msblk->decompressor->decompress(msblk, stream->stream, bio,
846b730e99518a Phillip Lougher  2013-11-18   89  					      offset, length, output);
fd56200a16c72c Julia Cartwright 2020-05-27   90  
dcb72eaed7732d Xiaoming Ni      2022-08-15   91  	local_unlock(&stream->lock);
dcb72eaed7732d Xiaoming Ni      2022-08-15   92  	preempt_enable();
d208383d640727 Phillip Lougher  2013-11-18   93  
d208383d640727 Phillip Lougher  2013-11-18   94  	if (res < 0)
d208383d640727 Phillip Lougher  2013-11-18   95  		ERROR("%s decompression failed, data probably corrupt\n",
d208383d640727 Phillip Lougher  2013-11-18   96  			msblk->decompressor->name);
d208383d640727 Phillip Lougher  2013-11-18   97  
d208383d640727 Phillip Lougher  2013-11-18   98  	return res;
d208383d640727 Phillip Lougher  2013-11-18   99  }
d208383d640727 Phillip Lougher  2013-11-18  100  

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