Commit 9f1f5b60 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

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/20230802151406.3735276-34-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent af4fcb07

mm/memory.c

+1 −3
Original line number Diff line number Diff line
@@ -4265,7 +4265,6 @@ 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))
@@ -4298,8 +4297,7 @@ 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)