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-rw-r--r--include/asm-i386/pgtable.h25
1 files changed, 17 insertions, 8 deletions
diff --git a/include/asm-i386/pgtable.h b/include/asm-i386/pgtable.h
index c6b8b944120c..995e8b34efd0 100644
--- a/include/asm-i386/pgtable.h
+++ b/include/asm-i386/pgtable.h
@@ -296,12 +296,23 @@ do { \
296 } \ 296 } \
297} while (0) 297} while (0)
298 298
299/*
300 * We don't actually have these, but we want to advertise them so that
301 * we can encompass the flush here.
302 */
303#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY 299#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
300static inline int ptep_test_and_clear_dirty(struct vm_area_struct *vma,
301 unsigned long addr, pte_t *ptep)
302{
303 if (!pte_dirty(*ptep))
304 return 0;
305 return test_and_clear_bit(_PAGE_BIT_DIRTY, &ptep->pte_low);
306}
307
304#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG 308#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
309static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
310 unsigned long addr, pte_t *ptep)
311{
312 if (!pte_young(*ptep))
313 return 0;
314 return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte_low);
315}
305 316
306/* 317/*
307 * Rules for using ptep_establish: the pte MUST be a user pte, and 318 * Rules for using ptep_establish: the pte MUST be a user pte, and
@@ -318,9 +329,8 @@ do { \
318#define ptep_clear_flush_dirty(vma, address, ptep) \ 329#define ptep_clear_flush_dirty(vma, address, ptep) \
319({ \ 330({ \
320 int __dirty; \ 331 int __dirty; \
321 __dirty = pte_dirty(*(ptep)); \ 332 __dirty = ptep_test_and_clear_dirty((vma), (address), (ptep)); \
322 if (__dirty) { \ 333 if (__dirty) { \
323 clear_bit(_PAGE_BIT_DIRTY, &(ptep)->pte_low); \
324 pte_update_defer((vma)->vm_mm, (address), (ptep)); \ 334 pte_update_defer((vma)->vm_mm, (address), (ptep)); \
325 flush_tlb_page(vma, address); \ 335 flush_tlb_page(vma, address); \
326 } \ 336 } \
@@ -331,9 +341,8 @@ do { \
331#define ptep_clear_flush_young(vma, address, ptep) \ 341#define ptep_clear_flush_young(vma, address, ptep) \
332({ \ 342({ \
333 int __young; \ 343 int __young; \
334 __young = pte_young(*(ptep)); \ 344 __young = ptep_test_and_clear_young((vma), (address), (ptep)); \
335 if (__young) { \ 345 if (__young) { \
336 clear_bit(_PAGE_BIT_ACCESSED, &(ptep)->pte_low); \
337 pte_update_defer((vma)->vm_mm, (address), (ptep)); \ 346 pte_update_defer((vma)->vm_mm, (address), (ptep)); \
338 flush_tlb_page(vma, address); \ 347 flush_tlb_page(vma, address); \
339 } \ 348 } \