[PATCH v4 32/36] mm: Use flush_icache_pages() in do_set_pmd()

[Matthew Wilcox (Oracle)]

Push the iteration over each page down to the architectures (many
can flush the entire THP without iteration).

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 mm/memory.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index c5f1bf906d0c..6aa21e8f3753 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4209,7 +4209,6 @@ vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page)
 	bool write = vmf->flags & FAULT_FLAG_WRITE;
 	unsigned long haddr = vmf->address & HPAGE_PMD_MASK;
 	pmd_t entry;
-	int i;
 	vm_fault_t ret = VM_FAULT_FALLBACK;
 
 	if (!transhuge_vma_suitable(vma, haddr))
@@ -4242,8 +4241,7 @@ vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page)
 	if (unlikely(!pmd_none(*vmf->pmd)))
 		goto out;
 
-	for (i = 0; i < HPAGE_PMD_NR; i++)
-		flush_icache_page(vma, page + i);
+	flush_icache_pages(vma, page, HPAGE_PMD_NR);
 
 	entry = mk_huge_pmd(page, vma->vm_page_prot);
 	if (write)
-- 
2.39.2