On 15.07.25 16:16, David Hildenbrand wrote:
On 07.07.25 16:23, Pankaj Raghav (Samsung) wrote:
From: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
Add largest_zero_folio() routine so that huge_zero_folio can be
used without the need to pass any mm struct. This will return ZERO_PAGE
folio if CONFIG_STATIC_PMD_ZERO_PAGE is disabled or if we failed to
allocate a PMD page from memblock.
This routine can also be called even if THP is disabled.
Signed-off-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
---
include/linux/mm.h | 28 ++++++++++++++++++++++++++--
1 file changed, 26 insertions(+), 2 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 428fe6d36b3c..d5543cf7b8e9 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -4018,17 +4018,41 @@ static inline bool vma_is_special_huge(const struct vm_area_struct *vma)
#endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_HUGETLBFS */
+extern struct folio *huge_zero_folio;
+extern unsigned long huge_zero_pfn;
No need for "extern".
Scratch that, was confused with functions ...
--
Cheers,
David / dhildenb
