mm: make arch_has_descending_max_zone_pfns() static

clang produces a build failure on x86 for some randconfig builds after a
change that moves around code to mm/mm_init.c:

Cannot find symbol for section 2: .text.
mm/mm_init.o: failed

I have not been able to figure out why this happens, but the __weak
annotation on arch_has_descending_max_zone_pfns() is the trigger here.

Removing the weak function in favor of an open-coded Kconfig option check
avoids the problem and becomes clearer as well as better to optimize by
the compiler.

[[email protected]: fix logic bug]
  Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 9420f89db2dd ("mm: move most of core MM initialization to mm/mm_init.c")
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Tested-by: SeongJae Park <[email protected]>
Tested-by: Geert Uytterhoeven <[email protected]>
Acked-by: Mike Rapoport (IBM) <[email protected]>
Cc: kernel test robot <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions