Hey Baolin,
I found a compilation issue that failed one[1] of my configurations
after applying this series. The error message is as follows:
mm/shmem.c: In function ‘shmem_get_unmapped_area’:
././include/linux/compiler_types.h:460:45: error: call to ‘__compiletime_assert_481’ declared with attribute error: BUILD_BUG failed
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
././include/linux/compiler_types.h:441:25: note: in definition of macro ‘__compiletime_assert’
prefix ## suffix(); \
^~~~~~
././include/linux/compiler_types.h:460:9: note: in expansion of macro ‘_compiletime_assert’
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:59:21: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
#define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
^~~~~~~~~~~~~~~~
./include/linux/huge_mm.h:97:28: note: in expansion of macro ‘BUILD_BUG’
#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
^~~~~~~~~
./include/linux/huge_mm.h:104:35: note: in expansion of macro ‘HPAGE_PMD_SHIFT’
#define HPAGE_PMD_SIZE ((1UL) << HPAGE_PMD_SHIFT)
^~~~~~~~~~~~~~~
mm/shmem.c:2419:36: note: in expansion of macro ‘HPAGE_PMD_SIZE’
unsigned long hpage_size = HPAGE_PMD_SIZE;
^~~~~~~~~~~~~~~
It seems like we need to handle the case where CONFIG_PGTABLE_HAS_HUGE_LEAVES
is undefined.
[1] export ARCH=arm64 && make allnoconfig && make olddefconfig && make -j$(nproc)
Thanks,
Lance
