>> + count_mthp_stat(folio_order(folio), MTHP_STAT_ANON_SWPIN_REFAULT);
>> }
>>
> From the latest mm-unstable tree, I get below kunit build failure and
> 'git bisect' points this patch.
>
> $ ./tools/testing/kunit/kunit.py run --build_dir ../kunit.out/
> [16:07:40] Configuring KUnit Kernel ...
> [16:07:40] Building KUnit Kernel ...
> Populating config with:
> $ make ARCH=um O=../kunit.out/ olddefconfig
> Building with:
> $ make ARCH=um O=../kunit.out/ --jobs=36
> ERROR:root:.../mm/memory.c: In function ‘do_swap_page’:
> .../mm/memory.c:4169:17: error: implicit declaration of function ‘count_mthp_stat’ [-Werror=implicit-function-declaration]
> 4169 | count_mthp_stat(folio_order(folio), MTHP_STAT_ANON_SWPIN_REFAULT);
> | ^~~~~~~~~~~~~~~
> .../mm/memory.c:4169:53: error: ‘MTHP_STAT_ANON_SWPIN_REFAULT’ undeclared (first use in this function)
> 4169 | count_mthp_stat(folio_order(folio), MTHP_STAT_ANON_SWPIN_REFAULT);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> .../mm/memory.c:4169:53: note: each undeclared identifier is reported only once for each function it appears in
> cc1: some warnings being treated as errors
>
> My kunit build config doesn't have CONFIG_TRANSPARE_HUGEPAGE. Maybe that's the
> reason and this patch, or the patch that introduced the function and the enum
> need to take care of the case?
Hi SeongJae,
Thanks very much, can you check if the below fix the build? If yes, I will
include this fix while sending v3.
Subject: [PATCH] mm: fix build errors on CONFIG_TRANSPARENT_HUGEPAGE=N
Signed-off-by: Barry Song <v-songbaohua@xxxxxxxx>
---
mm/memory.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/memory.c b/mm/memory.c
index acc023795a4d..1d587d1eb432 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4142,6 +4142,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, vmf->address,
&vmf->ptl);
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
/* We hit large folios in swapcache */
if (start_pte && folio_test_large(folio) && folio_test_swapcache(folio)) {
int nr = folio_nr_pages(folio);
@@ -4171,6 +4172,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
}
check_pte:
+#endif
if (unlikely(!vmf->pte || !pte_same(ptep_get(vmf->pte), vmf->orig_pte)))
goto out_nomap;
--
2.34.1
