mm/memory: convert do_read_fault() to use folios

Saves one implicit call to compound_head(). Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Sidhartha Kumar <[email protected]> Reviewed-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: ZhangPeng <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
kawasaki · Aug 18, 2023 · 22d1e68 · 22d1e68
1 parent 6f609b7
commit 22d1e68
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/mm/memory.c b/mm/memory.c
@@ -4536,6 +4536,7 @@ static inline bool should_fault_around(struct vm_fault *vmf)
 static vm_fault_t do_read_fault(struct vm_fault *vmf)
 {
 	vm_fault_t ret = 0;
+	struct folio *folio;
 
 	/*
 	 * Let's call ->map_pages() first and use ->fault() as fallback
@@ -4553,9 +4554,10 @@ static vm_fault_t do_read_fault(struct vm_fault *vmf)
 		return ret;
 
 	ret |= finish_fault(vmf);
-	unlock_page(vmf->page);
+	folio = page_folio(vmf->page);
+	folio_unlock(folio);
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))
-		put_page(vmf->page);
+		folio_put(folio);
 	return ret;
 }