[PATCH RFC 15/24] mm: export wp_page_copy()

Peter Xu
2019-01-21T07:59:37Z

Export this function for usages outside page fault handlers.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
include/linux/mm.h | 2 ++
mm/memory.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 89345b51d8bd..bf04e187fafe 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -378,6 +378,8 @@ struct vm_fault {
*/
};

+vm_fault_t wp_page_copy(struct vm_fault *vmf);
+
/* page entry size for vm->huge_fault() */
enum page_entry_size {
PE_SIZE_PTE = 0,
diff --git a/mm/memory.c b/mm/memory.c
index 7f276158683b..ef823c07f635 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2239,7 +2239,7 @@ static inline void wp_page_reuse(struct vm_fault *vmf)
* held to the old page, as well as updating the rmap.
* - In any case, unlock the PTL and drop the reference we took to the old page.
*/
-static vm_fault_t wp_page_copy(struct vm_fault *vmf)
+vm_fault_t wp_page_copy(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct mm_struct *mm = vma->vm_mm;
--
2.17.1