[PATCH v2 13/26] mm: export wp_page_copy()

Peter Xu
2019-02-12T02:59:11Z

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 f38fbe9c8bc9..2fd14a62324b 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -405,6 +405,8 @@ 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 f8d83ae16eff..32d32b6e6339 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