mm: use flush_icache_pages() in do_set_pmd()

Push the iteration over each page down to the architectures (many can flush the entire THP without iteration). Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Anshuman Khandual <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
sjp38 · Aug 4, 2023 · 10ffabd · 10ffabd
1 parent 50c19fb
commit 10ffabd
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/mm/memory.c b/mm/memory.c
@@ -4268,7 +4268,6 @@ 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))
@@ -4301,8 +4300,7 @@ 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)