Lines Matching refs:vmf
2196 static vm_fault_t do_page_mkwrite(struct vm_fault *vmf) in do_page_mkwrite() argument
2199 struct page *page = vmf->page; in do_page_mkwrite()
2200 unsigned int old_flags = vmf->flags; in do_page_mkwrite()
2202 vmf->flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE; in do_page_mkwrite()
2204 if (vmf->vma->vm_file && in do_page_mkwrite()
2205 IS_SWAPFILE(vmf->vma->vm_file->f_mapping->host)) in do_page_mkwrite()
2208 ret = vmf->vma->vm_ops->page_mkwrite(vmf); in do_page_mkwrite()
2210 vmf->flags = old_flags; in do_page_mkwrite()
2268 static inline void wp_page_reuse(struct vm_fault *vmf) in wp_page_reuse() argument
2269 __releases(vmf->ptl) in wp_page_reuse()
2271 struct vm_area_struct *vma = vmf->vma; in wp_page_reuse()
2272 struct page *page = vmf->page; in wp_page_reuse()
2282 flush_cache_page(vma, vmf->address, pte_pfn(vmf->orig_pte)); in wp_page_reuse()
2283 entry = pte_mkyoung(vmf->orig_pte); in wp_page_reuse()
2285 if (ptep_set_access_flags(vma, vmf->address, vmf->pte, entry, 1)) in wp_page_reuse()
2286 update_mmu_cache(vma, vmf->address, vmf->pte); in wp_page_reuse()
2287 pte_unmap_unlock(vmf->pte, vmf->ptl); in wp_page_reuse()
2306 static vm_fault_t wp_page_copy(struct vm_fault *vmf) in wp_page_copy() argument
2308 struct vm_area_struct *vma = vmf->vma; in wp_page_copy()
2310 struct page *old_page = vmf->page; in wp_page_copy()
2320 if (is_zero_pfn(pte_pfn(vmf->orig_pte))) { in wp_page_copy()
2322 vmf->address); in wp_page_copy()
2327 vmf->address); in wp_page_copy()
2330 cow_user_page(new_page, old_page, vmf->address, vma); in wp_page_copy()
2339 vmf->address & PAGE_MASK, in wp_page_copy()
2340 (vmf->address & PAGE_MASK) + PAGE_SIZE); in wp_page_copy()
2346 vmf->pte = pte_offset_map_lock(mm, vmf->pmd, vmf->address, &vmf->ptl); in wp_page_copy()
2347 if (likely(pte_same(*vmf->pte, vmf->orig_pte))) { in wp_page_copy()
2357 flush_cache_page(vma, vmf->address, pte_pfn(vmf->orig_pte)); in wp_page_copy()
2366 ptep_clear_flush_notify(vma, vmf->address, vmf->pte); in wp_page_copy()
2367 page_add_new_anon_rmap(new_page, vma, vmf->address, false); in wp_page_copy()
2375 set_pte_at_notify(mm, vmf->address, vmf->pte, entry); in wp_page_copy()
2376 update_mmu_cache(vma, vmf->address, vmf->pte); in wp_page_copy()
2413 pte_unmap_unlock(vmf->pte, vmf->ptl); in wp_page_copy()
2457 vm_fault_t finish_mkwrite_fault(struct vm_fault *vmf) in finish_mkwrite_fault() argument
2459 WARN_ON_ONCE(!(vmf->vma->vm_flags & VM_SHARED)); in finish_mkwrite_fault()
2460 vmf->pte = pte_offset_map_lock(vmf->vma->vm_mm, vmf->pmd, vmf->address, in finish_mkwrite_fault()
2461 &vmf->ptl); in finish_mkwrite_fault()
2466 if (!pte_same(*vmf->pte, vmf->orig_pte)) { in finish_mkwrite_fault()
2467 pte_unmap_unlock(vmf->pte, vmf->ptl); in finish_mkwrite_fault()
2470 wp_page_reuse(vmf); in finish_mkwrite_fault()
2478 static vm_fault_t wp_pfn_shared(struct vm_fault *vmf) in wp_pfn_shared() argument
2480 struct vm_area_struct *vma = vmf->vma; in wp_pfn_shared()
2485 pte_unmap_unlock(vmf->pte, vmf->ptl); in wp_pfn_shared()
2486 vmf->flags |= FAULT_FLAG_MKWRITE; in wp_pfn_shared()
2487 ret = vma->vm_ops->pfn_mkwrite(vmf); in wp_pfn_shared()
2490 return finish_mkwrite_fault(vmf); in wp_pfn_shared()
2492 wp_page_reuse(vmf); in wp_pfn_shared()
2496 static vm_fault_t wp_page_shared(struct vm_fault *vmf) in wp_page_shared() argument
2497 __releases(vmf->ptl) in wp_page_shared()
2499 struct vm_area_struct *vma = vmf->vma; in wp_page_shared()
2501 get_page(vmf->page); in wp_page_shared()
2506 pte_unmap_unlock(vmf->pte, vmf->ptl); in wp_page_shared()
2507 tmp = do_page_mkwrite(vmf); in wp_page_shared()
2510 put_page(vmf->page); in wp_page_shared()
2513 tmp = finish_mkwrite_fault(vmf); in wp_page_shared()
2515 unlock_page(vmf->page); in wp_page_shared()
2516 put_page(vmf->page); in wp_page_shared()
2520 wp_page_reuse(vmf); in wp_page_shared()
2521 lock_page(vmf->page); in wp_page_shared()
2523 fault_dirty_shared_page(vma, vmf->page); in wp_page_shared()
2524 put_page(vmf->page); in wp_page_shared()
2547 static vm_fault_t do_wp_page(struct vm_fault *vmf) in do_wp_page() argument
2548 __releases(vmf->ptl) in do_wp_page()
2550 struct vm_area_struct *vma = vmf->vma; in do_wp_page()
2552 vmf->page = vm_normal_page(vma, vmf->address, vmf->orig_pte); in do_wp_page()
2553 if (!vmf->page) { in do_wp_page()
2563 return wp_pfn_shared(vmf); in do_wp_page()
2565 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_wp_page()
2566 return wp_page_copy(vmf); in do_wp_page()
2573 if (PageAnon(vmf->page)) { in do_wp_page()
2575 if (PageKsm(vmf->page) && (PageSwapCache(vmf->page) || in do_wp_page()
2576 page_count(vmf->page) != 1)) in do_wp_page()
2578 if (!trylock_page(vmf->page)) { in do_wp_page()
2579 get_page(vmf->page); in do_wp_page()
2580 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_wp_page()
2581 lock_page(vmf->page); in do_wp_page()
2582 vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, in do_wp_page()
2583 vmf->address, &vmf->ptl); in do_wp_page()
2584 if (!pte_same(*vmf->pte, vmf->orig_pte)) { in do_wp_page()
2585 unlock_page(vmf->page); in do_wp_page()
2586 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_wp_page()
2587 put_page(vmf->page); in do_wp_page()
2590 put_page(vmf->page); in do_wp_page()
2592 if (PageKsm(vmf->page)) { in do_wp_page()
2593 bool reused = reuse_ksm_page(vmf->page, vmf->vma, in do_wp_page()
2594 vmf->address); in do_wp_page()
2595 unlock_page(vmf->page); in do_wp_page()
2598 wp_page_reuse(vmf); in do_wp_page()
2601 if (reuse_swap_page(vmf->page, &total_map_swapcount)) { in do_wp_page()
2610 page_move_anon_rmap(vmf->page, vma); in do_wp_page()
2612 unlock_page(vmf->page); in do_wp_page()
2613 wp_page_reuse(vmf); in do_wp_page()
2616 unlock_page(vmf->page); in do_wp_page()
2619 return wp_page_shared(vmf); in do_wp_page()
2625 get_page(vmf->page); in do_wp_page()
2627 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_wp_page()
2628 return wp_page_copy(vmf); in do_wp_page()
2735 vm_fault_t do_swap_page(struct vm_fault *vmf) in do_swap_page() argument
2737 struct vm_area_struct *vma = vmf->vma; in do_swap_page()
2746 if (!pte_unmap_same(vma->vm_mm, vmf->pmd, vmf->pte, vmf->orig_pte)) in do_swap_page()
2749 entry = pte_to_swp_entry(vmf->orig_pte); in do_swap_page()
2752 migration_entry_wait(vma->vm_mm, vmf->pmd, in do_swap_page()
2753 vmf->address); in do_swap_page()
2755 vmf->page = device_private_entry_to_page(entry); in do_swap_page()
2756 ret = vmf->page->pgmap->ops->migrate_to_ram(vmf); in do_swap_page()
2760 print_bad_pte(vma, vmf->address, vmf->orig_pte, NULL); in do_swap_page()
2768 page = lookup_swap_cache(entry, vma, vmf->address); in do_swap_page()
2778 vmf->address); in do_swap_page()
2788 vmf); in do_swap_page()
2797 vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, in do_swap_page()
2798 vmf->address, &vmf->ptl); in do_swap_page()
2799 if (likely(pte_same(*vmf->pte, vmf->orig_pte))) in do_swap_page()
2819 locked = lock_page_or_retry(page, vma->vm_mm, vmf->flags); in do_swap_page()
2837 page = ksm_might_need_to_copy(page, vma, vmf->address); in do_swap_page()
2853 vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, vmf->address, in do_swap_page()
2854 &vmf->ptl); in do_swap_page()
2855 if (unlikely(!pte_same(*vmf->pte, vmf->orig_pte))) in do_swap_page()
2876 if ((vmf->flags & FAULT_FLAG_WRITE) && reuse_swap_page(page, NULL)) { in do_swap_page()
2878 vmf->flags &= ~FAULT_FLAG_WRITE; in do_swap_page()
2883 if (pte_swp_soft_dirty(vmf->orig_pte)) in do_swap_page()
2885 set_pte_at(vma->vm_mm, vmf->address, vmf->pte, pte); in do_swap_page()
2886 arch_do_swap_page(vma->vm_mm, vma, vmf->address, pte, vmf->orig_pte); in do_swap_page()
2887 vmf->orig_pte = pte; in do_swap_page()
2891 page_add_new_anon_rmap(page, vma, vmf->address, false); in do_swap_page()
2895 do_page_add_anon_rmap(page, vma, vmf->address, exclusive); in do_swap_page()
2918 if (vmf->flags & FAULT_FLAG_WRITE) { in do_swap_page()
2919 ret |= do_wp_page(vmf); in do_swap_page()
2926 update_mmu_cache(vma, vmf->address, vmf->pte); in do_swap_page()
2928 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_swap_page()
2933 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_swap_page()
2950 static vm_fault_t do_anonymous_page(struct vm_fault *vmf) in do_anonymous_page() argument
2952 struct vm_area_struct *vma = vmf->vma; in do_anonymous_page()
2972 if (pte_alloc(vma->vm_mm, vmf->pmd)) in do_anonymous_page()
2976 if (unlikely(pmd_trans_unstable(vmf->pmd))) in do_anonymous_page()
2980 if (!(vmf->flags & FAULT_FLAG_WRITE) && in do_anonymous_page()
2982 entry = pte_mkspecial(pfn_pte(my_zero_pfn(vmf->address), in do_anonymous_page()
2984 vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, in do_anonymous_page()
2985 vmf->address, &vmf->ptl); in do_anonymous_page()
2986 if (!pte_none(*vmf->pte)) in do_anonymous_page()
2993 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_anonymous_page()
2994 return handle_userfault(vmf, VM_UFFD_MISSING); in do_anonymous_page()
3002 page = alloc_zeroed_user_highpage_movable(vma, vmf->address); in do_anonymous_page()
3021 vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, vmf->address, in do_anonymous_page()
3022 &vmf->ptl); in do_anonymous_page()
3023 if (!pte_none(*vmf->pte)) in do_anonymous_page()
3032 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_anonymous_page()
3035 return handle_userfault(vmf, VM_UFFD_MISSING); in do_anonymous_page()
3039 page_add_new_anon_rmap(page, vma, vmf->address, false); in do_anonymous_page()
3043 set_pte_at(vma->vm_mm, vmf->address, vmf->pte, entry); in do_anonymous_page()
3046 update_mmu_cache(vma, vmf->address, vmf->pte); in do_anonymous_page()
3048 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_anonymous_page()
3065 static vm_fault_t __do_fault(struct vm_fault *vmf) in __do_fault() argument
3067 struct vm_area_struct *vma = vmf->vma; in __do_fault()
3085 if (pmd_none(*vmf->pmd) && !vmf->prealloc_pte) { in __do_fault()
3086 vmf->prealloc_pte = pte_alloc_one(vmf->vma->vm_mm); in __do_fault()
3087 if (!vmf->prealloc_pte) in __do_fault()
3092 ret = vma->vm_ops->fault(vmf); in __do_fault()
3097 if (unlikely(PageHWPoison(vmf->page))) { in __do_fault()
3099 unlock_page(vmf->page); in __do_fault()
3100 put_page(vmf->page); in __do_fault()
3101 vmf->page = NULL; in __do_fault()
3106 lock_page(vmf->page); in __do_fault()
3108 VM_BUG_ON_PAGE(!PageLocked(vmf->page), vmf->page); in __do_fault()
3124 static vm_fault_t pte_alloc_one_map(struct vm_fault *vmf) in pte_alloc_one_map() argument
3126 struct vm_area_struct *vma = vmf->vma; in pte_alloc_one_map()
3128 if (!pmd_none(*vmf->pmd)) in pte_alloc_one_map()
3130 if (vmf->prealloc_pte) { in pte_alloc_one_map()
3131 vmf->ptl = pmd_lock(vma->vm_mm, vmf->pmd); in pte_alloc_one_map()
3132 if (unlikely(!pmd_none(*vmf->pmd))) { in pte_alloc_one_map()
3133 spin_unlock(vmf->ptl); in pte_alloc_one_map()
3138 pmd_populate(vma->vm_mm, vmf->pmd, vmf->prealloc_pte); in pte_alloc_one_map()
3139 spin_unlock(vmf->ptl); in pte_alloc_one_map()
3140 vmf->prealloc_pte = NULL; in pte_alloc_one_map()
3141 } else if (unlikely(pte_alloc(vma->vm_mm, vmf->pmd))) { in pte_alloc_one_map()
3156 if (pmd_devmap_trans_unstable(vmf->pmd)) in pte_alloc_one_map()
3168 vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd, vmf->address, in pte_alloc_one_map()
3169 &vmf->ptl); in pte_alloc_one_map()
3174 static void deposit_prealloc_pte(struct vm_fault *vmf) in deposit_prealloc_pte() argument
3176 struct vm_area_struct *vma = vmf->vma; in deposit_prealloc_pte()
3178 pgtable_trans_huge_deposit(vma->vm_mm, vmf->pmd, vmf->prealloc_pte); in deposit_prealloc_pte()
3184 vmf->prealloc_pte = NULL; in deposit_prealloc_pte()
3187 static vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page) in do_set_pmd() argument
3189 struct vm_area_struct *vma = vmf->vma; in do_set_pmd()
3190 bool write = vmf->flags & FAULT_FLAG_WRITE; in do_set_pmd()
3191 unsigned long haddr = vmf->address & HPAGE_PMD_MASK; in do_set_pmd()
3206 if (arch_needs_pgtable_deposit() && !vmf->prealloc_pte) { in do_set_pmd()
3207 vmf->prealloc_pte = pte_alloc_one(vma->vm_mm); in do_set_pmd()
3208 if (!vmf->prealloc_pte) in do_set_pmd()
3213 vmf->ptl = pmd_lock(vma->vm_mm, vmf->pmd); in do_set_pmd()
3214 if (unlikely(!pmd_none(*vmf->pmd))) in do_set_pmd()
3230 deposit_prealloc_pte(vmf); in do_set_pmd()
3232 set_pmd_at(vma->vm_mm, haddr, vmf->pmd, entry); in do_set_pmd()
3234 update_mmu_cache_pmd(vma, haddr, vmf->pmd); in do_set_pmd()
3240 spin_unlock(vmf->ptl); in do_set_pmd()
3244 static vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page) in do_set_pmd() argument
3267 vm_fault_t alloc_set_pte(struct vm_fault *vmf, struct mem_cgroup *memcg, in alloc_set_pte() argument
3270 struct vm_area_struct *vma = vmf->vma; in alloc_set_pte()
3271 bool write = vmf->flags & FAULT_FLAG_WRITE; in alloc_set_pte()
3275 if (pmd_none(*vmf->pmd) && PageTransCompound(page) && in alloc_set_pte()
3280 ret = do_set_pmd(vmf, page); in alloc_set_pte()
3285 if (!vmf->pte) { in alloc_set_pte()
3286 ret = pte_alloc_one_map(vmf); in alloc_set_pte()
3292 if (unlikely(!pte_none(*vmf->pte))) in alloc_set_pte()
3302 page_add_new_anon_rmap(page, vma, vmf->address, false); in alloc_set_pte()
3309 set_pte_at(vma->vm_mm, vmf->address, vmf->pte, entry); in alloc_set_pte()
3312 update_mmu_cache(vma, vmf->address, vmf->pte); in alloc_set_pte()
3333 vm_fault_t finish_fault(struct vm_fault *vmf) in finish_fault() argument
3339 if ((vmf->flags & FAULT_FLAG_WRITE) && in finish_fault()
3340 !(vmf->vma->vm_flags & VM_SHARED)) in finish_fault()
3341 page = vmf->cow_page; in finish_fault()
3343 page = vmf->page; in finish_fault()
3349 if (!(vmf->vma->vm_flags & VM_SHARED)) in finish_fault()
3350 ret = check_stable_address_space(vmf->vma->vm_mm); in finish_fault()
3352 ret = alloc_set_pte(vmf, vmf->memcg, page); in finish_fault()
3353 if (vmf->pte) in finish_fault()
3354 pte_unmap_unlock(vmf->pte, vmf->ptl); in finish_fault()
3418 static vm_fault_t do_fault_around(struct vm_fault *vmf) in do_fault_around() argument
3420 unsigned long address = vmf->address, nr_pages, mask; in do_fault_around()
3421 pgoff_t start_pgoff = vmf->pgoff; in do_fault_around()
3429 vmf->address = max(address & mask, vmf->vma->vm_start); in do_fault_around()
3430 off = ((address - vmf->address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1); in do_fault_around()
3438 ((vmf->address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) + in do_fault_around()
3440 end_pgoff = min3(end_pgoff, vma_pages(vmf->vma) + vmf->vma->vm_pgoff - 1, in do_fault_around()
3443 if (pmd_none(*vmf->pmd)) { in do_fault_around()
3444 vmf->prealloc_pte = pte_alloc_one(vmf->vma->vm_mm); in do_fault_around()
3445 if (!vmf->prealloc_pte) in do_fault_around()
3450 vmf->vma->vm_ops->map_pages(vmf, start_pgoff, end_pgoff); in do_fault_around()
3453 if (pmd_trans_huge(*vmf->pmd)) { in do_fault_around()
3459 if (!vmf->pte) in do_fault_around()
3463 vmf->pte -= (vmf->address >> PAGE_SHIFT) - (address >> PAGE_SHIFT); in do_fault_around()
3464 if (!pte_none(*vmf->pte)) in do_fault_around()
3466 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_fault_around()
3468 vmf->address = address; in do_fault_around()
3469 vmf->pte = NULL; in do_fault_around()
3473 static vm_fault_t do_read_fault(struct vm_fault *vmf) in do_read_fault() argument
3475 struct vm_area_struct *vma = vmf->vma; in do_read_fault()
3484 ret = do_fault_around(vmf); in do_read_fault()
3489 ret = __do_fault(vmf); in do_read_fault()
3493 ret |= finish_fault(vmf); in do_read_fault()
3494 unlock_page(vmf->page); in do_read_fault()
3496 put_page(vmf->page); in do_read_fault()
3500 static vm_fault_t do_cow_fault(struct vm_fault *vmf) in do_cow_fault() argument
3502 struct vm_area_struct *vma = vmf->vma; in do_cow_fault()
3508 vmf->cow_page = alloc_page_vma(GFP_HIGHUSER_MOVABLE, vma, vmf->address); in do_cow_fault()
3509 if (!vmf->cow_page) in do_cow_fault()
3512 if (mem_cgroup_try_charge_delay(vmf->cow_page, vma->vm_mm, GFP_KERNEL, in do_cow_fault()
3513 &vmf->memcg, false)) { in do_cow_fault()
3514 put_page(vmf->cow_page); in do_cow_fault()
3518 ret = __do_fault(vmf); in do_cow_fault()
3524 copy_user_highpage(vmf->cow_page, vmf->page, vmf->address, vma); in do_cow_fault()
3525 __SetPageUptodate(vmf->cow_page); in do_cow_fault()
3527 ret |= finish_fault(vmf); in do_cow_fault()
3528 unlock_page(vmf->page); in do_cow_fault()
3529 put_page(vmf->page); in do_cow_fault()
3534 mem_cgroup_cancel_charge(vmf->cow_page, vmf->memcg, false); in do_cow_fault()
3535 put_page(vmf->cow_page); in do_cow_fault()
3539 static vm_fault_t do_shared_fault(struct vm_fault *vmf) in do_shared_fault() argument
3541 struct vm_area_struct *vma = vmf->vma; in do_shared_fault()
3544 ret = __do_fault(vmf); in do_shared_fault()
3553 unlock_page(vmf->page); in do_shared_fault()
3554 tmp = do_page_mkwrite(vmf); in do_shared_fault()
3557 put_page(vmf->page); in do_shared_fault()
3562 ret |= finish_fault(vmf); in do_shared_fault()
3565 unlock_page(vmf->page); in do_shared_fault()
3566 put_page(vmf->page); in do_shared_fault()
3570 fault_dirty_shared_page(vma, vmf->page); in do_shared_fault()
3582 static vm_fault_t do_fault(struct vm_fault *vmf) in do_fault() argument
3584 struct vm_area_struct *vma = vmf->vma; in do_fault()
3596 if (unlikely(!pmd_present(*vmf->pmd))) in do_fault()
3599 vmf->pte = pte_offset_map_lock(vmf->vma->vm_mm, in do_fault()
3600 vmf->pmd, in do_fault()
3601 vmf->address, in do_fault()
3602 &vmf->ptl); in do_fault()
3610 if (unlikely(pte_none(*vmf->pte))) in do_fault()
3615 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_fault()
3617 } else if (!(vmf->flags & FAULT_FLAG_WRITE)) in do_fault()
3618 ret = do_read_fault(vmf); in do_fault()
3620 ret = do_cow_fault(vmf); in do_fault()
3622 ret = do_shared_fault(vmf); in do_fault()
3625 if (vmf->prealloc_pte) { in do_fault()
3626 pte_free(vm_mm, vmf->prealloc_pte); in do_fault()
3627 vmf->prealloc_pte = NULL; in do_fault()
3647 static vm_fault_t do_numa_page(struct vm_fault *vmf) in do_numa_page() argument
3649 struct vm_area_struct *vma = vmf->vma; in do_numa_page()
3656 bool was_writable = pte_savedwrite(vmf->orig_pte); in do_numa_page()
3664 vmf->ptl = pte_lockptr(vma->vm_mm, vmf->pmd); in do_numa_page()
3665 spin_lock(vmf->ptl); in do_numa_page()
3666 if (unlikely(!pte_same(*vmf->pte, vmf->orig_pte))) { in do_numa_page()
3667 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_numa_page()
3675 old_pte = ptep_modify_prot_start(vma, vmf->address, vmf->pte); in do_numa_page()
3680 ptep_modify_prot_commit(vma, vmf->address, vmf->pte, old_pte, pte); in do_numa_page()
3681 update_mmu_cache(vma, vmf->address, vmf->pte); in do_numa_page()
3683 page = vm_normal_page(vma, vmf->address, pte); in do_numa_page()
3685 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_numa_page()
3691 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_numa_page()
3715 target_nid = numa_migrate_prep(page, vma, vmf->address, page_nid, in do_numa_page()
3717 pte_unmap_unlock(vmf->pte, vmf->ptl); in do_numa_page()
3737 static inline vm_fault_t create_huge_pmd(struct vm_fault *vmf) in create_huge_pmd() argument
3739 if (vma_is_anonymous(vmf->vma)) in create_huge_pmd()
3740 return do_huge_pmd_anonymous_page(vmf); in create_huge_pmd()
3741 if (vmf->vma->vm_ops->huge_fault) in create_huge_pmd()
3742 return vmf->vma->vm_ops->huge_fault(vmf, PE_SIZE_PMD); in create_huge_pmd()
3747 static inline vm_fault_t wp_huge_pmd(struct vm_fault *vmf, pmd_t orig_pmd) in wp_huge_pmd() argument
3749 if (vma_is_anonymous(vmf->vma)) in wp_huge_pmd()
3750 return do_huge_pmd_wp_page(vmf, orig_pmd); in wp_huge_pmd()
3751 if (vmf->vma->vm_ops->huge_fault) in wp_huge_pmd()
3752 return vmf->vma->vm_ops->huge_fault(vmf, PE_SIZE_PMD); in wp_huge_pmd()
3755 VM_BUG_ON_VMA(vmf->vma->vm_flags & VM_SHARED, vmf->vma); in wp_huge_pmd()
3756 __split_huge_pmd(vmf->vma, vmf->pmd, vmf->address, false, NULL); in wp_huge_pmd()
3766 static vm_fault_t create_huge_pud(struct vm_fault *vmf) in create_huge_pud() argument
3770 if (vma_is_anonymous(vmf->vma)) in create_huge_pud()
3772 if (vmf->vma->vm_ops->huge_fault) in create_huge_pud()
3773 return vmf->vma->vm_ops->huge_fault(vmf, PE_SIZE_PUD); in create_huge_pud()
3778 static vm_fault_t wp_huge_pud(struct vm_fault *vmf, pud_t orig_pud) in wp_huge_pud() argument
3782 if (vma_is_anonymous(vmf->vma)) in wp_huge_pud()
3784 if (vmf->vma->vm_ops->huge_fault) in wp_huge_pud()
3785 return vmf->vma->vm_ops->huge_fault(vmf, PE_SIZE_PUD); in wp_huge_pud()
3805 static vm_fault_t handle_pte_fault(struct vm_fault *vmf) in handle_pte_fault() argument
3809 if (unlikely(pmd_none(*vmf->pmd))) { in handle_pte_fault()
3816 vmf->pte = NULL; in handle_pte_fault()
3819 if (pmd_devmap_trans_unstable(vmf->pmd)) in handle_pte_fault()
3827 vmf->pte = pte_offset_map(vmf->pmd, vmf->address); in handle_pte_fault()
3828 vmf->orig_pte = *vmf->pte; in handle_pte_fault()
3839 if (pte_none(vmf->orig_pte)) { in handle_pte_fault()
3840 pte_unmap(vmf->pte); in handle_pte_fault()
3841 vmf->pte = NULL; in handle_pte_fault()
3845 if (!vmf->pte) { in handle_pte_fault()
3846 if (vma_is_anonymous(vmf->vma)) in handle_pte_fault()
3847 return do_anonymous_page(vmf); in handle_pte_fault()
3849 return do_fault(vmf); in handle_pte_fault()
3852 if (!pte_present(vmf->orig_pte)) in handle_pte_fault()
3853 return do_swap_page(vmf); in handle_pte_fault()
3855 if (pte_protnone(vmf->orig_pte) && vma_is_accessible(vmf->vma)) in handle_pte_fault()
3856 return do_numa_page(vmf); in handle_pte_fault()
3858 vmf->ptl = pte_lockptr(vmf->vma->vm_mm, vmf->pmd); in handle_pte_fault()
3859 spin_lock(vmf->ptl); in handle_pte_fault()
3860 entry = vmf->orig_pte; in handle_pte_fault()
3861 if (unlikely(!pte_same(*vmf->pte, entry))) in handle_pte_fault()
3863 if (vmf->flags & FAULT_FLAG_WRITE) { in handle_pte_fault()
3865 return do_wp_page(vmf); in handle_pte_fault()
3869 if (ptep_set_access_flags(vmf->vma, vmf->address, vmf->pte, entry, in handle_pte_fault()
3870 vmf->flags & FAULT_FLAG_WRITE)) { in handle_pte_fault()
3871 update_mmu_cache(vmf->vma, vmf->address, vmf->pte); in handle_pte_fault()
3879 if (vmf->flags & FAULT_FLAG_WRITE) in handle_pte_fault()
3880 flush_tlb_fix_spurious_fault(vmf->vma, vmf->address); in handle_pte_fault()
3883 pte_unmap_unlock(vmf->pte, vmf->ptl); in handle_pte_fault()
3896 struct vm_fault vmf = { in __handle_mm_fault() local
3914 vmf.pud = pud_alloc(mm, p4d, address); in __handle_mm_fault()
3915 if (!vmf.pud) in __handle_mm_fault()
3917 if (pud_none(*vmf.pud) && __transparent_hugepage_enabled(vma)) { in __handle_mm_fault()
3918 ret = create_huge_pud(&vmf); in __handle_mm_fault()
3922 pud_t orig_pud = *vmf.pud; in __handle_mm_fault()
3930 ret = wp_huge_pud(&vmf, orig_pud); in __handle_mm_fault()
3934 huge_pud_set_accessed(&vmf, orig_pud); in __handle_mm_fault()
3940 vmf.pmd = pmd_alloc(mm, vmf.pud, address); in __handle_mm_fault()
3941 if (!vmf.pmd) in __handle_mm_fault()
3943 if (pmd_none(*vmf.pmd) && __transparent_hugepage_enabled(vma)) { in __handle_mm_fault()
3944 ret = create_huge_pmd(&vmf); in __handle_mm_fault()
3948 pmd_t orig_pmd = *vmf.pmd; in __handle_mm_fault()
3955 pmd_migration_entry_wait(mm, vmf.pmd); in __handle_mm_fault()
3960 return do_huge_pmd_numa_page(&vmf, orig_pmd); in __handle_mm_fault()
3963 ret = wp_huge_pmd(&vmf, orig_pmd); in __handle_mm_fault()
3967 huge_pmd_set_accessed(&vmf, orig_pmd); in __handle_mm_fault()
3973 return handle_pte_fault(&vmf); in __handle_mm_fault()