Commit a991639c authored May 29, 2014 by Linus Torvalds

linux

Pull arm64 fix from Will Deacon:
 "Fix CoW regression for transparent hugepages by routing set_pmd_at to
  set_pte_at, which correctly handles PTE_WRITE and will mark the
  resulting table entry as read-only where appropriate"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: fix pmd_write CoW brokenness

parents f035b3d3 ceb21835

arch/arm64/include/asm/pgtable.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -266,7 +266,7 @@ static inline pmd_t pte_pmd(pte_t pte)

		#define pmd_page(pmd) pfn_to_page(__phys_to_pfn(pmd_val(pmd) & PHYS_MASK))

		#define set_pmd_at(mm, addr, pmdp, pmd) set_pmd(pmdp, pmd)
		#define set_pmd_at(mm, addr, pmdp, pmd) set_pte_at(mm, addr, (pte_t *)pmdp, pmd_pte(pmd))

		static inline int has_transparent_hugepage(void)
		{