diff mbox series

[v2,1/4] mm/memory: convert do_page_mkwrite() to use folios

Message ID 20230705194335.273790-1-sidhartha.kumar@oracle.com
State New
Headers
Series [v2,1/4] mm/memory: convert do_page_mkwrite() to use folios |

Commit Message

Sidhartha Kumar July 5, 2023, 7:43 p.m. UTC 
  Saves one implicit call to compound_head();

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
---

v2:
	change folio_mapping() to folio->mapping
	
 mm/memory.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

Matthew Wilcox July 5, 2023, 7:52 p.m. UTC | #1 
On Wed, Jul 05, 2023 at 12:43:32PM -0700, Sidhartha Kumar wrote:
> Saves one implicit call to compound_head();
> 
> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>

Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
diff mbox series

Patch

diff --git a/mm/memory.c b/mm/memory.c
index 21fab27272092..e73245b791a7a 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2932,7 +2932,7 @@  static gfp_t __get_fault_gfp_mask(struct vm_area_struct *vma)
 static vm_fault_t do_page_mkwrite(struct vm_fault *vmf)
 {
 	vm_fault_t ret;
-	struct page *page = vmf->page;
+	struct folio *folio = page_folio(vmf->page);
 	unsigned int old_flags = vmf->flags;
 
 	vmf->flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE;
@@ -2947,14 +2947,14 @@  static vm_fault_t do_page_mkwrite(struct vm_fault *vmf)
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))
 		return ret;
 	if (unlikely(!(ret & VM_FAULT_LOCKED))) {
-		lock_page(page);
-		if (!page->mapping) {
-			unlock_page(page);
+		folio_lock(folio);
+		if (!folio->mapping) {
+			folio_unlock(folio);
 			return 0; /* retry */
 		}
 		ret |= VM_FAULT_LOCKED;
 	} else
-		VM_BUG_ON_PAGE(!PageLocked(page), page);
+		VM_BUG_ON_FOLIO(!folio_test_locked(folio), folio);
 	return ret;
 }