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authorDavid Hildenbrand <david@redhat.com>2022-10-21 13:11:39 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-12-12 05:12:08 +0300
commite07cda5f232fac4de0925d8a4c92e51e41fa2f6e (patch)
tree1281575e1e5572a15e071208047ee07bb6be74f8 /include
parent6cce3314b928b2db7d5f48171e18314226551c3f (diff)
downloadlinux-e07cda5f232fac4de0925d8a4c92e51e41fa2f6e.tar.xz
mm/pagewalk: add walk_page_range_vma()
Let's add walk_page_range_vma(), which is similar to walk_page_vma(), however, is only interested in a subset of the VMA range. To be used in KSM code to stop using follow_page() next. Link: https://lkml.kernel.org/r/20221021101141.84170-8-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Peter Xu <peterx@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/pagewalk.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pagewalk.h b/include/linux/pagewalk.h
index 37dc0208862d..959f52e5867d 100644
--- a/include/linux/pagewalk.h
+++ b/include/linux/pagewalk.h
@@ -101,6 +101,9 @@ int walk_page_range_novma(struct mm_struct *mm, unsigned long start,
unsigned long end, const struct mm_walk_ops *ops,
pgd_t *pgd,
void *private);
+int walk_page_range_vma(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end, const struct mm_walk_ops *ops,
+ void *private);
int walk_page_vma(struct vm_area_struct *vma, const struct mm_walk_ops *ops,
void *private);
int walk_page_mapping(struct address_space *mapping, pgoff_t first_index,