Saves one implicit call to compound_head().
Suggested-by: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: Sidhartha Kumar <[email protected]>
---
I'm not sure if I should change the name of the function
to do_folio_mkwrite() and update the description comment
to reference a folio as the vm_op is still called page_mkwrite.
mm/memory.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index 1dada20e39959..ad790394963ab 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2936,10 +2936,9 @@ 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 vm_fault_t do_page_mkwrite(struct vm_fault *vmf)
+static vm_fault_t do_page_mkwrite(struct vm_fault *vmf, struct folio *folio)
{
vm_fault_t ret;
- struct folio *folio = page_folio(vmf->page);
unsigned int old_flags = vmf->flags;
vmf->flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE;
@@ -3301,7 +3300,7 @@ static vm_fault_t wp_page_shared(struct vm_fault *vmf, struct folio *folio)
vm_fault_t tmp;
pte_unmap_unlock(vmf->pte, vmf->ptl);
- tmp = do_page_mkwrite(vmf);
+ tmp = do_page_mkwrite(vmf, folio);
if (unlikely(!tmp || (tmp &
(VM_FAULT_ERROR | VM_FAULT_NOPAGE)))) {
folio_put(folio);
@@ -4627,7 +4626,7 @@ static vm_fault_t do_shared_fault(struct vm_fault *vmf)
*/
if (vma->vm_ops->page_mkwrite) {
folio_unlock(folio);
- tmp = do_page_mkwrite(vmf);
+ tmp = do_page_mkwrite(vmf, folio);
if (unlikely(!tmp ||
(tmp & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))) {
folio_put(folio);
--
2.41.0