linux-next: manual merge of the vfs-brauner tree with the mm tree

Stephen Rothwell
2024-09-02T01:21:03Z

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Hi all,

Today's linux-next merge of the fs-next tree got a conflict in:

include/linux/huge_mm.h

between commit:

bc47772ebe8b ("mm: introduce a pageflag for partially mapped folios")

from the mm-unstable branch of the mm tree and commit:

fd031210c9ce ("mm: split a folio in minimum folio order chunks")

from the vfs-brauner tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging. You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

--
Cheers,
Stephen Rothwell

diff --cc include/linux/huge_mm.h
index 0b0539f4ee1a,7c50aeed0522..000000000000
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@@ -326,14 -316,15 +328,15 @@@ unsigned long thp_get_unmapped_area_vmf
unsigned long len, unsigned long pgoff, unsigned long flags,
vm_flags_t vm_flags);

-bool can_split_folio(struct folio *folio, int *pextra_pins);
+bool can_split_folio(struct folio *folio, int caller_pins, int *pextra_pins);
int split_huge_page_to_list_to_order(struct page *page, struct list_head *list,
unsigned int new_order);
+ int split_folio_to_list(struct folio *folio, struct list_head *list);
static inline int split_huge_page(struct page *page)
{
- return split_huge_page_to_list_to_order(page, NULL, 0);
+ return split_folio(page_folio(page));
}
-void deferred_split_folio(struct folio *folio);
+void deferred_split_folio(struct folio *folio, bool partially_mapped);

void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long address, bool freeze, struct folio *folio);
@@@ -502,7 -487,13 +505,13 @@@ static inline int split_huge_page(struc
{
return 0;
}
+
+ static inline int split_folio_to_list(struct folio *folio, struct list_head *list)
+ {
+ return 0;
+ }
+
-static inline void deferred_split_folio(struct folio *folio) {}
+static inline void deferred_split_folio(struct folio *folio, bool partially_mapped) {}
#define split_huge_pmd(__vma, __pmd, __address) \
do { } while (0)