Commit 95000286ff79 ("mm: switch vma_merge(), split_vma(), and
__split_vma to vma iterator") on mm-unstable didn't make the change to
nommu.c, but the declaration change was applied to !CONFIG_MMU, too. It
causes below build failure.
linux/mm/nommu.c:1347:5: error: conflicting types for 'split_vma'
1347 | int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
| ^~~~~~~~~
In file included from linux/mm/nommu.c:20:
linux/include/linux/mm.h:2846:12: note: previous declaration of 'split_vma' was here
2846 | extern int split_vma(struct vma_iterator *vmi, struct vm_area_struct *,
| ^~~~~~~~~
Fix the build failure by adding the split_vma() declaration for
!CONFIG_MMU case.
Fixes: 95000286ff79 ("mm: switch vma_merge(), split_vma(), and __split_vma to vma iterator") on mm-unstabl
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
include/linux/mm.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 4d9148b939f8..a2bf261cdbef 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2843,8 +2843,13 @@ extern struct vm_area_struct *vma_merge(struct vma_iterator *vmi,
extern struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *);
extern int __split_vma(struct vma_iterator *vmi, struct vm_area_struct *,
unsigned long addr, int new_below);
+#ifdef CONFIG_MMU
extern int split_vma(struct vma_iterator *vmi, struct vm_area_struct *,
unsigned long addr, int new_below);
+#else
+extern int split_vma(struct mm_struct *, struct vm_area_struct *,
+ unsigned long addr, int new_below);
+#endif /* CONFIG_MMU */
extern int insert_vm_struct(struct mm_struct *, struct vm_area_struct *);
extern void unlink_file_vma(struct vm_area_struct *);
extern struct vm_area_struct *copy_vma(struct vm_area_struct **,
--
2.25.1
