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-rw-r--r--mm/memory.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 6fd827804bf5..e8a527885e8b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2034,20 +2034,17 @@ static gfp_t __get_fault_gfp_mask(struct vm_area_struct *vma)
*
* We do this without the lock held, so that it can sleep if it needs to.
*/
-static int do_page_mkwrite(struct vm_area_struct *vma, struct page *page,
- unsigned long address)
+static int do_page_mkwrite(struct vm_fault *vmf)
{
- struct vm_fault vmf;
int ret;
+ struct page *page = vmf->page;
+ unsigned int old_flags = vmf->flags;
- vmf.address = address & PAGE_MASK;
- vmf.pgoff = page->index;
- vmf.flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE;
- vmf.gfp_mask = __get_fault_gfp_mask(vma);
- vmf.page = page;
- vmf.cow_page = NULL;
+ vmf->flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE;
- ret = vma->vm_ops->page_mkwrite(vma, &vmf);
+ ret = vmf->vma->vm_ops->page_mkwrite(vmf->vma, vmf);
+ /* Restore original flags so that caller is not surprised */
+ vmf->flags = old_flags;
if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))
return ret;
if (unlikely(!(ret & VM_FAULT_LOCKED))) {
@@ -2323,7 +2320,8 @@ static int wp_page_shared(struct vm_fault *vmf, struct page *old_page)
int tmp;
pte_unmap_unlock(vmf->pte, vmf->ptl);
- tmp = do_page_mkwrite(vma, old_page, vmf->address);
+ vmf->page = old_page;
+ tmp = do_page_mkwrite(vmf);
if (unlikely(!tmp || (tmp &
(VM_FAULT_ERROR | VM_FAULT_NOPAGE)))) {
put_page(old_page);
@@ -3324,7 +3322,7 @@ static int do_shared_fault(struct vm_fault *vmf)
*/
if (vma->vm_ops->page_mkwrite) {
unlock_page(vmf->page);
- tmp = do_page_mkwrite(vma, vmf->page, vmf->address);
+ tmp = do_page_mkwrite(vmf);
if (unlikely(!tmp ||
(tmp & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))) {
put_page(vmf->page);