[bvanassche:f2fs 4/4] fs/f2fs/segment.h:417:21: warning: comparison of distinct pointer types ('typeof (start + (4096 / sizeof(struct f2fs_sit_entry))) *' (aka 'unsigned int *') and 'typeof ((unsigned long)(SM_I(sbi)->main_segments)) *' (aka 'unsigned long *'))

From: kernel test robot
Date: Mon Jul 18 2022 - 02:31:37 EST

tree: https://github.com/bvanassche/linux f2fs
head: 787811ac4178b6f0a77923aa25c58b4041a52f05
commit: 787811ac4178b6f0a77923aa25c58b4041a52f05 [4/4] f
config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220718/202207181452.urqB2dj0-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d74b88c69dc2644bd0dc5d64e2d7413a0d4040e5)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/bvanassche/linux/commit/787811ac4178b6f0a77923aa25c58b4041a52f05
git remote add bvanassche https://github.com/bvanassche/linux
git fetch --no-tags bvanassche f2fs
git checkout 787811ac4178b6f0a77923aa25c58b4041a52f05
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/

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

All warnings (new ones prefixed by >>):

In file included from fs/f2fs/file.c:31:
>> fs/f2fs/segment.h:417:21: warning: comparison of distinct pointer types ('typeof (start + (4096 / sizeof(struct f2fs_sit_entry))) *' (aka 'unsigned int *') and 'typeof ((unsigned long)(SM_I(sbi)->main_segments)) *' (aka 'unsigned long *')) [-Wcompare-distinct-pointer-types]
unsigned int end = min(start + SIT_ENTRY_PER_BLOCK,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:45:19: note: expanded from macro 'min'
#define min(x, y) __careful_cmp(x, y, <)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:20:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
1 warning generated.
--
In file included from fs/f2fs/segment.c:22:
>> fs/f2fs/segment.h:417:21: warning: comparison of distinct pointer types ('typeof (start + (4096 / sizeof(struct f2fs_sit_entry))) *' (aka 'unsigned int *') and 'typeof ((unsigned long)(SM_I(sbi)->main_segments)) *' (aka 'unsigned long *')) [-Wcompare-distinct-pointer-types]
unsigned int end = min(start + SIT_ENTRY_PER_BLOCK,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:45:19: note: expanded from macro 'min'
#define min(x, y) __careful_cmp(x, y, <)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:20:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
>> fs/f2fs/segment.c:4070:22: warning: comparison of distinct pointer types ('typeof (start_segno + (4096 / sizeof(struct f2fs_sit_entry))) *' (aka 'unsigned int *') and 'typeof ((unsigned long)(SM_I(sbi)->main_segments)) *' (aka 'unsigned long *')) [-Wcompare-distinct-pointer-types]
unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:45:19: note: expanded from macro 'min'
#define min(x, y) __careful_cmp(x, y, <)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:20:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
2 warnings generated.


vim +417 fs/f2fs/segment.h

068c3cd8586678 Yunlei He 2018-01-25 410
068c3cd8586678 Yunlei He 2018-01-25 411 static inline void seg_info_to_sit_page(struct f2fs_sb_info *sbi,
068c3cd8586678 Yunlei He 2018-01-25 412 struct page *page, unsigned int start)
068c3cd8586678 Yunlei He 2018-01-25 413 {
068c3cd8586678 Yunlei He 2018-01-25 414 struct f2fs_sit_block *raw_sit;
068c3cd8586678 Yunlei He 2018-01-25 415 struct seg_entry *se;
068c3cd8586678 Yunlei He 2018-01-25 416 struct f2fs_sit_entry *rs;
068c3cd8586678 Yunlei He 2018-01-25 @417 unsigned int end = min(start + SIT_ENTRY_PER_BLOCK,
068c3cd8586678 Yunlei He 2018-01-25 418 (unsigned long)MAIN_SEGS(sbi));
068c3cd8586678 Yunlei He 2018-01-25 419 int i;
068c3cd8586678 Yunlei He 2018-01-25 420
068c3cd8586678 Yunlei He 2018-01-25 421 raw_sit = (struct f2fs_sit_block *)page_address(page);
81114baa835b59 Chao Yu 2018-04-09 422 memset(raw_sit, 0, PAGE_SIZE);
068c3cd8586678 Yunlei He 2018-01-25 423 for (i = 0; i < end - start; i++) {
068c3cd8586678 Yunlei He 2018-01-25 424 rs = &raw_sit->entries[i];
068c3cd8586678 Yunlei He 2018-01-25 425 se = get_seg_entry(sbi, start + i);
068c3cd8586678 Yunlei He 2018-01-25 426 __seg_info_to_raw_sit(se, rs);
068c3cd8586678 Yunlei He 2018-01-25 427 }
068c3cd8586678 Yunlei He 2018-01-25 428 }
068c3cd8586678 Yunlei He 2018-01-25 429

:::::: The code at line 417 was first introduced by commit
:::::: 068c3cd85866785303f18960a4c00a182515b963 f2fs: rebuild sit page from sit info in mem

:::::: TO: Yunlei He <heyunlei@xxxxxxxxxx>
:::::: CC: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>

--
0-DAY CI Kernel Test Service
https://01.org/lkp