linux-kernel - [gfs2:for-next 11/11] fs/gfs2/file.c:796:24: sparse: sparse: incompatible types in comparison expression (different type sizes):

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Message-ID: <202203171137.AU0RE6e4-lkp@intel.com>
Date:   Thu, 17 Mar 2022 11:25:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andreas Gruenbacher <agruenba@...hat.com>
Cc:     kbuild-all@...ts.01.org, cluster-devel@...hat.com,
        linux-kernel@...r.kernel.org
Subject: [gfs2:for-next 11/11] fs/gfs2/file.c:796:24: sparse: sparse:
 incompatible types in comparison expression (different type sizes):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git for-next
head:   a20050c14edf19add5a9588cb196bb00aa410650
commit: a20050c14edf19add5a9588cb196bb00aa410650 [11/11] gfs2: Add read/write page 'fault_stats'
config: sh-randconfig-s032-20220313 (https://download.01.org/0day-ci/archive/20220317/202203171137.AU0RE6e4-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 11.2.0
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-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git/commit/?id=a20050c14edf19add5a9588cb196bb00aa410650
        git remote add gfs2 https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git
        git fetch --no-tags gfs2 for-next
        git checkout a20050c14edf19add5a9588cb196bb00aa410650
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sh SHELL=/bin/bash fs/gfs2/

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


sparse warnings: (new ones prefixed by >>)
>> fs/gfs2/file.c:796:24: sparse: sparse: incompatible types in comparison expression (different type sizes):
   fs/gfs2/file.c:796:24: sparse:    unsigned int *
>> fs/gfs2/file.c:796:24: sparse:    unsigned long *
   fs/gfs2/file.c:796:24: sparse: sparse: cannot size expression

vim +796 fs/gfs2/file.c

   772	
   773	static inline bool should_fault_in_pages(ssize_t ret, struct iov_iter *i,
   774						 size_t *prev_count,
   775						 size_t *window_size)
   776	{
   777		size_t count = iov_iter_count(i);
   778		size_t size, offs;
   779	
   780		if (likely(!count))
   781			return false;
   782		if (ret <= 0 && ret != -EFAULT)
   783			return false;
   784		if (!iter_is_iovec(i))
   785			return false;
   786	
   787		size = PAGE_SIZE;
   788		offs = offset_in_page(i->iov[0].iov_base + i->iov_offset);
   789		if (*prev_count != count || !*window_size) {
   790			int nr_dirtied;
   791	
   792			size = ALIGN(offs + count, PAGE_SIZE);
   793			size = min_t(size_t, size, SZ_1M);
   794			nr_dirtied = max(current->nr_dirtied_pause -
   795					 current->nr_dirtied, 8);
 > 796			size = min(size, nr_dirtied * PAGE_SIZE);
   797		}
   798	
   799		*prev_count = count;
   800		*window_size = size - offs;
   801		return true;
   802	}
   803	

---
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