Lines Matching refs:vma
80 struct vm_area_struct *vma, struct vm_area_struct *prev,
125 void vma_set_page_prot(struct vm_area_struct *vma) in vma_set_page_prot() argument
127 unsigned long vm_flags = vma->vm_flags; in vma_set_page_prot()
130 vm_page_prot = vm_pgprot_modify(vma->vm_page_prot, vm_flags); in vma_set_page_prot()
131 if (vma_wants_writenotify(vma, vm_page_prot)) { in vma_set_page_prot()
136 WRITE_ONCE(vma->vm_page_prot, vm_page_prot); in vma_set_page_prot()
142 static void __remove_shared_vm_struct(struct vm_area_struct *vma, in __remove_shared_vm_struct() argument
145 if (vma->vm_flags & VM_DENYWRITE) in __remove_shared_vm_struct()
147 if (vma->vm_flags & VM_SHARED) in __remove_shared_vm_struct()
151 vma_interval_tree_remove(vma, &mapping->i_mmap); in __remove_shared_vm_struct()
159 void unlink_file_vma(struct vm_area_struct *vma) in unlink_file_vma() argument
161 struct file *file = vma->vm_file; in unlink_file_vma()
166 __remove_shared_vm_struct(vma, file, mapping); in unlink_file_vma()
174 static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) in remove_vma() argument
176 struct vm_area_struct *next = vma->vm_next; in remove_vma()
179 if (vma->vm_ops && vma->vm_ops->close) in remove_vma()
180 vma->vm_ops->close(vma); in remove_vma()
181 if (vma->vm_file) in remove_vma()
182 fput(vma->vm_file); in remove_vma()
183 mpol_put(vma_policy(vma)); in remove_vma()
184 vm_area_free(vma); in remove_vma()
289 static inline unsigned long vma_compute_gap(struct vm_area_struct *vma) in vma_compute_gap() argument
299 gap = vm_start_gap(vma); in vma_compute_gap()
300 if (vma->vm_prev) { in vma_compute_gap()
301 prev_end = vm_end_gap(vma->vm_prev); in vma_compute_gap()
311 static unsigned long vma_compute_subtree_gap(struct vm_area_struct *vma) in vma_compute_subtree_gap() argument
313 unsigned long max = vma_compute_gap(vma), subtree_gap; in vma_compute_subtree_gap()
314 if (vma->vm_rb.rb_left) { in vma_compute_subtree_gap()
315 subtree_gap = rb_entry(vma->vm_rb.rb_left, in vma_compute_subtree_gap()
320 if (vma->vm_rb.rb_right) { in vma_compute_subtree_gap()
321 subtree_gap = rb_entry(vma->vm_rb.rb_right, in vma_compute_subtree_gap()
337 struct vm_area_struct *vma; in browse_rb() local
338 vma = rb_entry(nd, struct vm_area_struct, vm_rb); in browse_rb()
339 if (vma->vm_start < prev) { in browse_rb()
341 vma->vm_start, prev); in browse_rb()
344 if (vma->vm_start < pend) { in browse_rb()
346 vma->vm_start, pend); in browse_rb()
349 if (vma->vm_start > vma->vm_end) { in browse_rb()
351 vma->vm_start, vma->vm_end); in browse_rb()
355 if (vma->rb_subtree_gap != vma_compute_subtree_gap(vma)) { in browse_rb()
357 vma->rb_subtree_gap, in browse_rb()
358 vma_compute_subtree_gap(vma)); in browse_rb()
364 prev = vma->vm_start; in browse_rb()
365 pend = vma->vm_end; in browse_rb()
382 struct vm_area_struct *vma; in validate_mm_rb() local
383 vma = rb_entry(nd, struct vm_area_struct, vm_rb); in validate_mm_rb()
384 VM_BUG_ON_VMA(vma != ignore && in validate_mm_rb()
385 vma->rb_subtree_gap != vma_compute_subtree_gap(vma), in validate_mm_rb()
386 vma); in validate_mm_rb()
395 struct vm_area_struct *vma = mm->mmap; in validate_mm() local
397 while (vma) { in validate_mm()
398 struct anon_vma *anon_vma = vma->anon_vma; in validate_mm()
403 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in validate_mm()
408 highest_address = vm_end_gap(vma); in validate_mm()
409 vma = vma->vm_next; in validate_mm()
443 static void vma_gap_update(struct vm_area_struct *vma) in RB_DECLARE_CALLBACKS_MAX()
449 vma_gap_callbacks_propagate(&vma->vm_rb, NULL); in RB_DECLARE_CALLBACKS_MAX()
452 static inline void vma_rb_insert(struct vm_area_struct *vma, in vma_rb_insert() argument
458 rb_insert_augmented(&vma->vm_rb, root, &vma_gap_callbacks); in vma_rb_insert()
461 static void __vma_rb_erase(struct vm_area_struct *vma, struct rb_root *root) in __vma_rb_erase() argument
468 rb_erase_augmented(&vma->vm_rb, root, &vma_gap_callbacks); in __vma_rb_erase()
471 static __always_inline void vma_rb_erase_ignore(struct vm_area_struct *vma, in vma_rb_erase_ignore() argument
486 __vma_rb_erase(vma, root); in vma_rb_erase_ignore()
489 static __always_inline void vma_rb_erase(struct vm_area_struct *vma, in vma_rb_erase() argument
492 vma_rb_erase_ignore(vma, root, vma); in vma_rb_erase()
510 anon_vma_interval_tree_pre_update_vma(struct vm_area_struct *vma) in anon_vma_interval_tree_pre_update_vma() argument
514 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in anon_vma_interval_tree_pre_update_vma()
519 anon_vma_interval_tree_post_update_vma(struct vm_area_struct *vma) in anon_vma_interval_tree_post_update_vma() argument
523 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in anon_vma_interval_tree_post_update_vma()
571 struct vm_area_struct *vma) in vma_next()
573 if (!vma) in vma_next()
576 return vma->vm_next; in vma_next()
609 struct vm_area_struct *vma; in count_vma_pages_range() local
612 vma = find_vma_intersection(mm, addr, end); in count_vma_pages_range()
613 if (!vma) in count_vma_pages_range()
616 nr_pages = (min(end, vma->vm_end) - in count_vma_pages_range()
617 max(addr, vma->vm_start)) >> PAGE_SHIFT; in count_vma_pages_range()
620 for (vma = vma->vm_next; vma; vma = vma->vm_next) { in count_vma_pages_range()
623 if (vma->vm_start > end) in count_vma_pages_range()
626 overlap_len = min(end, vma->vm_end) - vma->vm_start; in count_vma_pages_range()
633 void __vma_link_rb(struct mm_struct *mm, struct vm_area_struct *vma, in __vma_link_rb() argument
637 if (vma->vm_next) in __vma_link_rb()
638 vma_gap_update(vma->vm_next); in __vma_link_rb()
640 mm->highest_vm_end = vm_end_gap(vma); in __vma_link_rb()
651 rb_link_node(&vma->vm_rb, rb_parent, rb_link); in __vma_link_rb()
652 vma->rb_subtree_gap = 0; in __vma_link_rb()
653 vma_gap_update(vma); in __vma_link_rb()
654 vma_rb_insert(vma, &mm->mm_rb); in __vma_link_rb()
657 static void __vma_link_file(struct vm_area_struct *vma) in __vma_link_file() argument
661 file = vma->vm_file; in __vma_link_file()
665 if (vma->vm_flags & VM_DENYWRITE) in __vma_link_file()
667 if (vma->vm_flags & VM_SHARED) in __vma_link_file()
671 vma_interval_tree_insert(vma, &mapping->i_mmap); in __vma_link_file()
677 __vma_link(struct mm_struct *mm, struct vm_area_struct *vma, in __vma_link() argument
681 __vma_link_list(mm, vma, prev); in __vma_link()
682 __vma_link_rb(mm, vma, rb_link, rb_parent); in __vma_link()
685 static void vma_link(struct mm_struct *mm, struct vm_area_struct *vma, in vma_link() argument
691 if (vma->vm_file) { in vma_link()
692 mapping = vma->vm_file->f_mapping; in vma_link()
696 __vma_link(mm, vma, prev, rb_link, rb_parent); in vma_link()
697 __vma_link_file(vma); in vma_link()
710 static void __insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma) in __insert_vm_struct() argument
715 if (find_vma_links(mm, vma->vm_start, vma->vm_end, in __insert_vm_struct()
718 __vma_link(mm, vma, prev, rb_link, rb_parent); in __insert_vm_struct()
723 struct vm_area_struct *vma, in __vma_unlink() argument
726 vma_rb_erase_ignore(vma, &mm->mm_rb, ignore); in __vma_unlink()
727 __vma_unlink_list(mm, vma); in __vma_unlink()
739 int __vma_adjust(struct vm_area_struct *vma, unsigned long start, in __vma_adjust() argument
743 struct mm_struct *mm = vma->vm_mm; in __vma_adjust()
744 struct vm_area_struct *next = vma->vm_next, *orig_vma = vma; in __vma_adjust()
748 struct file *file = vma->vm_file; in __vma_adjust()
776 swap(vma, next); in __vma_adjust()
778 VM_WARN_ON(expand != vma); in __vma_adjust()
791 importer = vma; in __vma_adjust()
807 importer = vma; in __vma_adjust()
809 } else if (end < vma->vm_end) { in __vma_adjust()
815 adjust_next = -(vma->vm_end - end); in __vma_adjust()
816 exporter = vma; in __vma_adjust()
841 uprobe_munmap(vma, vma->vm_start, vma->vm_end); in __vma_adjust()
858 anon_vma = vma->anon_vma; in __vma_adjust()
865 anon_vma_interval_tree_pre_update_vma(vma); in __vma_adjust()
872 vma_interval_tree_remove(vma, root); in __vma_adjust()
877 if (start != vma->vm_start) { in __vma_adjust()
878 vma->vm_start = start; in __vma_adjust()
881 if (end != vma->vm_end) { in __vma_adjust()
882 vma->vm_end = end; in __vma_adjust()
885 vma->vm_pgoff = pgoff; in __vma_adjust()
894 vma_interval_tree_insert(vma, root); in __vma_adjust()
915 __vma_unlink(mm, next, vma); in __vma_adjust()
927 vma_gap_update(vma); in __vma_adjust()
930 mm->highest_vm_end = vm_end_gap(vma); in __vma_adjust()
937 anon_vma_interval_tree_post_update_vma(vma); in __vma_adjust()
945 uprobe_mmap(vma); in __vma_adjust()
957 anon_vma_merge(vma, next); in __vma_adjust()
973 next = vma->vm_next; in __vma_adjust()
985 next = vma; in __vma_adjust()
1014 VM_WARN_ON(mm->highest_vm_end != vm_end_gap(vma)); in __vma_adjust()
1029 static inline int is_mergeable_vma(struct vm_area_struct *vma, in is_mergeable_vma() argument
1041 if ((vma->vm_flags ^ vm_flags) & ~VM_SOFTDIRTY) in is_mergeable_vma()
1043 if (vma->vm_file != file) in is_mergeable_vma()
1045 if (vma->vm_ops && vma->vm_ops->close) in is_mergeable_vma()
1047 if (!is_mergeable_vm_userfaultfd_ctx(vma, vm_userfaultfd_ctx)) in is_mergeable_vma()
1054 struct vm_area_struct *vma) in is_mergeable_anon_vma() argument
1060 if ((!anon_vma1 || !anon_vma2) && (!vma || in is_mergeable_anon_vma()
1061 list_is_singular(&vma->anon_vma_chain))) in is_mergeable_anon_vma()
1078 can_vma_merge_before(struct vm_area_struct *vma, unsigned long vm_flags, in can_vma_merge_before() argument
1083 if (is_mergeable_vma(vma, file, vm_flags, vm_userfaultfd_ctx) && in can_vma_merge_before()
1084 is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) { in can_vma_merge_before()
1085 if (vma->vm_pgoff == vm_pgoff) in can_vma_merge_before()
1099 can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags, in can_vma_merge_after() argument
1104 if (is_mergeable_vma(vma, file, vm_flags, vm_userfaultfd_ctx) && in can_vma_merge_after()
1105 is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) { in can_vma_merge_after()
1107 vm_pglen = vma_pages(vma); in can_vma_merge_after()
1108 if (vma->vm_pgoff + vm_pglen == vm_pgoff) in can_vma_merge_after()
1310 struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *vma) in find_mergeable_anon_vma() argument
1315 if (vma->vm_next) { in find_mergeable_anon_vma()
1316 anon_vma = reusable_anon_vma(vma->vm_next, vma, vma->vm_next); in find_mergeable_anon_vma()
1322 if (vma->vm_prev) in find_mergeable_anon_vma()
1323 anon_vma = reusable_anon_vma(vma->vm_prev, vma->vm_prev, vma); in find_mergeable_anon_vma()
1456 struct vm_area_struct *vma = find_vma(mm, addr); in do_mmap() local
1458 if (vma && vma->vm_start < addr + len) in do_mmap()
1678 int vma_wants_writenotify(struct vm_area_struct *vma, pgprot_t vm_page_prot) in vma_wants_writenotify() argument
1680 vm_flags_t vm_flags = vma->vm_flags; in vma_wants_writenotify()
1681 const struct vm_operations_struct *vm_ops = vma->vm_ops; in vma_wants_writenotify()
1706 return vma->vm_file && vma->vm_file->f_mapping && in vma_wants_writenotify()
1707 mapping_can_writeback(vma->vm_file->f_mapping); in vma_wants_writenotify()
1731 struct vm_area_struct *vma, *prev, *merge; in mmap_region() local
1767 vma = vma_merge(mm, prev, addr, addr + len, vm_flags, in mmap_region()
1769 if (vma) in mmap_region()
1777 vma = vm_area_alloc(mm); in mmap_region()
1778 if (!vma) { in mmap_region()
1783 vma->vm_start = addr; in mmap_region()
1784 vma->vm_end = addr + len; in mmap_region()
1785 vma->vm_flags = vm_flags; in mmap_region()
1786 vma->vm_page_prot = vm_get_page_prot(vm_flags); in mmap_region()
1787 vma->vm_pgoff = pgoff; in mmap_region()
1806 vma->vm_file = get_file(file); in mmap_region()
1807 error = call_mmap(file, vma); in mmap_region()
1818 WARN_ON_ONCE(addr != vma->vm_start); in mmap_region()
1820 addr = vma->vm_start; in mmap_region()
1825 if (unlikely(vm_flags != vma->vm_flags && prev)) { in mmap_region()
1826 merge = vma_merge(mm, prev, vma->vm_start, vma->vm_end, vma->vm_flags, in mmap_region()
1827 NULL, vma->vm_file, vma->vm_pgoff, NULL, NULL_VM_UFFD_CTX); in mmap_region()
1833 fput(vma->vm_file); in mmap_region()
1834 vm_area_free(vma); in mmap_region()
1835 vma = merge; in mmap_region()
1837 vm_flags = vma->vm_flags; in mmap_region()
1842 vm_flags = vma->vm_flags; in mmap_region()
1844 error = shmem_zero_setup(vma); in mmap_region()
1848 vma_set_anonymous(vma); in mmap_region()
1852 if (!arch_validate_flags(vma->vm_flags)) { in mmap_region()
1860 vma_link(mm, vma, prev, rb_link, rb_parent); in mmap_region()
1869 file = vma->vm_file; in mmap_region()
1871 perf_event_mmap(vma); in mmap_region()
1875 if ((vm_flags & VM_SPECIAL) || vma_is_dax(vma) || in mmap_region()
1876 is_vm_hugetlb_page(vma) || in mmap_region()
1877 vma == get_gate_vma(current->mm)) in mmap_region()
1878 vma->vm_flags &= VM_LOCKED_CLEAR_MASK; in mmap_region()
1884 uprobe_mmap(vma); in mmap_region()
1893 vma->vm_flags |= VM_SOFTDIRTY; in mmap_region()
1895 vma_set_page_prot(vma); in mmap_region()
1900 vma->vm_file = NULL; in mmap_region()
1904 unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end); in mmap_region()
1912 vm_area_free(vma); in mmap_region()
1930 struct vm_area_struct *vma; in unmapped_area() local
1950 vma = rb_entry(mm->mm_rb.rb_node, struct vm_area_struct, vm_rb); in unmapped_area()
1951 if (vma->rb_subtree_gap < length) in unmapped_area()
1956 gap_end = vm_start_gap(vma); in unmapped_area()
1957 if (gap_end >= low_limit && vma->vm_rb.rb_left) { in unmapped_area()
1959 rb_entry(vma->vm_rb.rb_left, in unmapped_area()
1962 vma = left; in unmapped_area()
1967 gap_start = vma->vm_prev ? vm_end_gap(vma->vm_prev) : 0; in unmapped_area()
1977 if (vma->vm_rb.rb_right) { in unmapped_area()
1979 rb_entry(vma->vm_rb.rb_right, in unmapped_area()
1982 vma = right; in unmapped_area()
1989 struct rb_node *prev = &vma->vm_rb; in unmapped_area()
1992 vma = rb_entry(rb_parent(prev), in unmapped_area()
1994 if (prev == vma->vm_rb.rb_left) { in unmapped_area()
1995 gap_start = vm_end_gap(vma->vm_prev); in unmapped_area()
1996 gap_end = vm_start_gap(vma); in unmapped_area()
2025 struct vm_area_struct *vma; in unmapped_area_topdown() local
2054 vma = rb_entry(mm->mm_rb.rb_node, struct vm_area_struct, vm_rb); in unmapped_area_topdown()
2055 if (vma->rb_subtree_gap < length) in unmapped_area_topdown()
2060 gap_start = vma->vm_prev ? vm_end_gap(vma->vm_prev) : 0; in unmapped_area_topdown()
2061 if (gap_start <= high_limit && vma->vm_rb.rb_right) { in unmapped_area_topdown()
2063 rb_entry(vma->vm_rb.rb_right, in unmapped_area_topdown()
2066 vma = right; in unmapped_area_topdown()
2073 gap_end = vm_start_gap(vma); in unmapped_area_topdown()
2081 if (vma->vm_rb.rb_left) { in unmapped_area_topdown()
2083 rb_entry(vma->vm_rb.rb_left, in unmapped_area_topdown()
2086 vma = left; in unmapped_area_topdown()
2093 struct rb_node *prev = &vma->vm_rb; in unmapped_area_topdown()
2096 vma = rb_entry(rb_parent(prev), in unmapped_area_topdown()
2098 if (prev == vma->vm_rb.rb_right) { in unmapped_area_topdown()
2099 gap_start = vma->vm_prev ? in unmapped_area_topdown()
2100 vm_end_gap(vma->vm_prev) : 0; in unmapped_area_topdown()
2168 struct vm_area_struct *vma, *prev; in arch_get_unmapped_area() local
2180 vma = find_vma_prev(mm, addr, &prev); in arch_get_unmapped_area()
2182 (!vma || addr + len <= vm_start_gap(vma)) && in arch_get_unmapped_area()
2207 struct vm_area_struct *vma, *prev; in arch_get_unmapped_area_topdown() local
2222 vma = find_vma_prev(mm, addr, &prev); in arch_get_unmapped_area_topdown()
2224 (!vma || addr + len <= vm_start_gap(vma)) && in arch_get_unmapped_area_topdown()
2303 struct vm_area_struct *vma; in find_vma() local
2306 vma = vmacache_find(mm, addr); in find_vma()
2307 if (likely(vma)) in find_vma()
2308 return vma; in find_vma()
2318 vma = tmp; in find_vma()
2326 if (vma) in find_vma()
2327 vmacache_update(addr, vma); in find_vma()
2328 return vma; in find_vma()
2340 struct vm_area_struct *vma; in find_vma_prev() local
2342 vma = find_vma(mm, addr); in find_vma_prev()
2343 if (vma) { in find_vma_prev()
2344 *pprev = vma->vm_prev; in find_vma_prev()
2350 return vma; in find_vma_prev()
2358 static int acct_stack_growth(struct vm_area_struct *vma, in acct_stack_growth() argument
2361 struct mm_struct *mm = vma->vm_mm; in acct_stack_growth()
2365 if (!may_expand_vm(mm, vma->vm_flags, grow)) in acct_stack_growth()
2373 if (vma->vm_flags & VM_LOCKED) { in acct_stack_growth()
2384 new_start = (vma->vm_flags & VM_GROWSUP) ? vma->vm_start : in acct_stack_growth()
2385 vma->vm_end - size; in acct_stack_growth()
2386 if (is_hugepage_only_range(vma->vm_mm, new_start, size)) in acct_stack_growth()
2404 int expand_upwards(struct vm_area_struct *vma, unsigned long address) in expand_upwards() argument
2406 struct mm_struct *mm = vma->vm_mm; in expand_upwards()
2411 if (!(vma->vm_flags & VM_GROWSUP)) in expand_upwards()
2427 next = vma->vm_next; in expand_upwards()
2435 if (unlikely(anon_vma_prepare(vma))) in expand_upwards()
2443 anon_vma_lock_write(vma->anon_vma); in expand_upwards()
2446 if (address > vma->vm_end) { in expand_upwards()
2449 size = address - vma->vm_start; in expand_upwards()
2450 grow = (address - vma->vm_end) >> PAGE_SHIFT; in expand_upwards()
2453 if (vma->vm_pgoff + (size >> PAGE_SHIFT) >= vma->vm_pgoff) { in expand_upwards()
2454 error = acct_stack_growth(vma, size, grow); in expand_upwards()
2468 if (vma->vm_flags & VM_LOCKED) in expand_upwards()
2470 vm_stat_account(mm, vma->vm_flags, grow); in expand_upwards()
2471 anon_vma_interval_tree_pre_update_vma(vma); in expand_upwards()
2472 vma->vm_end = address; in expand_upwards()
2473 anon_vma_interval_tree_post_update_vma(vma); in expand_upwards()
2474 if (vma->vm_next) in expand_upwards()
2475 vma_gap_update(vma->vm_next); in expand_upwards()
2477 mm->highest_vm_end = vm_end_gap(vma); in expand_upwards()
2480 perf_event_mmap(vma); in expand_upwards()
2484 anon_vma_unlock_write(vma->anon_vma); in expand_upwards()
2485 khugepaged_enter_vma_merge(vma, vma->vm_flags); in expand_upwards()
2494 int expand_downwards(struct vm_area_struct *vma, in expand_downwards() argument
2497 struct mm_struct *mm = vma->vm_mm; in expand_downwards()
2506 prev = vma->vm_prev; in expand_downwards()
2515 if (unlikely(anon_vma_prepare(vma))) in expand_downwards()
2523 anon_vma_lock_write(vma->anon_vma); in expand_downwards()
2526 if (address < vma->vm_start) { in expand_downwards()
2529 size = vma->vm_end - address; in expand_downwards()
2530 grow = (vma->vm_start - address) >> PAGE_SHIFT; in expand_downwards()
2533 if (grow <= vma->vm_pgoff) { in expand_downwards()
2534 error = acct_stack_growth(vma, size, grow); in expand_downwards()
2548 if (vma->vm_flags & VM_LOCKED) in expand_downwards()
2550 vm_stat_account(mm, vma->vm_flags, grow); in expand_downwards()
2551 anon_vma_interval_tree_pre_update_vma(vma); in expand_downwards()
2552 vma->vm_start = address; in expand_downwards()
2553 vma->vm_pgoff -= grow; in expand_downwards()
2554 anon_vma_interval_tree_post_update_vma(vma); in expand_downwards()
2555 vma_gap_update(vma); in expand_downwards()
2558 perf_event_mmap(vma); in expand_downwards()
2562 anon_vma_unlock_write(vma->anon_vma); in expand_downwards()
2563 khugepaged_enter_vma_merge(vma, vma->vm_flags); in expand_downwards()
2585 int expand_stack(struct vm_area_struct *vma, unsigned long address) in expand_stack() argument
2587 return expand_upwards(vma, address); in expand_stack()
2593 struct vm_area_struct *vma, *prev; in find_extend_vma() local
2596 vma = find_vma_prev(mm, addr, &prev); in find_extend_vma()
2597 if (vma && (vma->vm_start <= addr)) in find_extend_vma()
2598 return vma; in find_extend_vma()
2607 int expand_stack(struct vm_area_struct *vma, unsigned long address) in expand_stack() argument
2609 return expand_downwards(vma, address); in expand_stack()
2615 struct vm_area_struct *vma; in find_extend_vma() local
2619 vma = find_vma(mm, addr); in find_extend_vma()
2620 if (!vma) in find_extend_vma()
2622 if (vma->vm_start <= addr) in find_extend_vma()
2623 return vma; in find_extend_vma()
2624 if (!(vma->vm_flags & VM_GROWSDOWN)) in find_extend_vma()
2626 start = vma->vm_start; in find_extend_vma()
2627 if (expand_stack(vma, addr)) in find_extend_vma()
2629 if (vma->vm_flags & VM_LOCKED) in find_extend_vma()
2630 populate_vma_page_range(vma, addr, start, NULL); in find_extend_vma()
2631 return vma; in find_extend_vma()
2643 static void remove_vma_list(struct mm_struct *mm, struct vm_area_struct *vma) in remove_vma_list() argument
2650 long nrpages = vma_pages(vma); in remove_vma_list()
2652 if (vma->vm_flags & VM_ACCOUNT) in remove_vma_list()
2654 vm_stat_account(mm, vma->vm_flags, -nrpages); in remove_vma_list()
2655 vma = remove_vma(vma); in remove_vma_list()
2656 } while (vma); in remove_vma_list()
2667 struct vm_area_struct *vma, struct vm_area_struct *prev, in unmap_region() argument
2676 unmap_vmas(&tlb, vma, start, end); in unmap_region()
2677 free_pgtables(&tlb, vma, prev ? prev->vm_end : FIRST_USER_ADDRESS, in unmap_region()
2687 detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma, in detach_vmas_to_be_unmapped() argument
2694 vma->vm_prev = NULL; in detach_vmas_to_be_unmapped()
2696 vma_rb_erase(vma, &mm->mm_rb); in detach_vmas_to_be_unmapped()
2698 tail_vma = vma; in detach_vmas_to_be_unmapped()
2699 vma = vma->vm_next; in detach_vmas_to_be_unmapped()
2700 } while (vma && vma->vm_start < end); in detach_vmas_to_be_unmapped()
2701 *insertion_point = vma; in detach_vmas_to_be_unmapped()
2702 if (vma) { in detach_vmas_to_be_unmapped()
2703 vma->vm_prev = prev; in detach_vmas_to_be_unmapped()
2704 vma_gap_update(vma); in detach_vmas_to_be_unmapped()
2717 if (vma && (vma->vm_flags & VM_GROWSDOWN)) in detach_vmas_to_be_unmapped()
2728 int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, in __split_vma() argument
2734 if (vma->vm_ops && vma->vm_ops->split) { in __split_vma()
2735 err = vma->vm_ops->split(vma, addr); in __split_vma()
2740 new = vm_area_dup(vma); in __split_vma()
2748 new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT); in __split_vma()
2751 err = vma_dup_policy(vma, new); in __split_vma()
2755 err = anon_vma_clone(new, vma); in __split_vma()
2766 err = vma_adjust(vma, addr, vma->vm_end, vma->vm_pgoff + in __split_vma()
2769 err = vma_adjust(vma, vma->vm_start, addr, vma->vm_pgoff, new); in __split_vma()
2792 int split_vma(struct mm_struct *mm, struct vm_area_struct *vma, in split_vma() argument
2798 return __split_vma(mm, vma, addr, new_below); in split_vma()
2810 struct vm_area_struct *vma, *prev, *last; in __do_munmap() local
2828 vma = find_vma(mm, start); in __do_munmap()
2829 if (!vma) in __do_munmap()
2831 prev = vma->vm_prev; in __do_munmap()
2835 if (vma->vm_start >= end) in __do_munmap()
2845 if (start > vma->vm_start) { in __do_munmap()
2853 if (end < vma->vm_end && mm->map_count >= sysctl_max_map_count) in __do_munmap()
2856 error = __split_vma(mm, vma, start, 0); in __do_munmap()
2859 prev = vma; in __do_munmap()
2869 vma = vma_next(mm, prev); in __do_munmap()
2881 int error = userfaultfd_unmap_prep(vma, start, end, uf); in __do_munmap()
2890 struct vm_area_struct *tmp = vma; in __do_munmap()
2902 if (!detach_vmas_to_be_unmapped(mm, vma, prev, end)) in __do_munmap()
2908 unmap_region(mm, vma, prev, start, end); in __do_munmap()
2911 remove_vma_list(mm, vma); in __do_munmap()
2969 struct vm_area_struct *vma; in SYSCALL_DEFINE5() local
2992 vma = find_vma(mm, start); in SYSCALL_DEFINE5()
2994 if (!vma || !(vma->vm_flags & VM_SHARED)) in SYSCALL_DEFINE5()
2997 if (start < vma->vm_start) in SYSCALL_DEFINE5()
3000 if (start + size > vma->vm_end) { in SYSCALL_DEFINE5()
3003 for (next = vma->vm_next; next; next = next->vm_next) { in SYSCALL_DEFINE5()
3008 if (next->vm_file != vma->vm_file) in SYSCALL_DEFINE5()
3011 if (next->vm_flags != vma->vm_flags) in SYSCALL_DEFINE5()
3022 prot |= vma->vm_flags & VM_READ ? PROT_READ : 0; in SYSCALL_DEFINE5()
3023 prot |= vma->vm_flags & VM_WRITE ? PROT_WRITE : 0; in SYSCALL_DEFINE5()
3024 prot |= vma->vm_flags & VM_EXEC ? PROT_EXEC : 0; in SYSCALL_DEFINE5()
3028 if (vma->vm_flags & VM_LOCKED) { in SYSCALL_DEFINE5()
3033 for (tmp = vma; tmp->vm_start >= start + size; in SYSCALL_DEFINE5()
3047 file = get_file(vma->vm_file); in SYSCALL_DEFINE5()
3048 ret = do_mmap(vma->vm_file, start, size, in SYSCALL_DEFINE5()
3068 struct vm_area_struct *vma, *prev; in do_brk_flags() local
3102 vma = vma_merge(mm, prev, addr, addr + len, flags, in do_brk_flags()
3104 if (vma) in do_brk_flags()
3110 vma = vm_area_alloc(mm); in do_brk_flags()
3111 if (!vma) { in do_brk_flags()
3116 vma_set_anonymous(vma); in do_brk_flags()
3117 vma->vm_start = addr; in do_brk_flags()
3118 vma->vm_end = addr + len; in do_brk_flags()
3119 vma->vm_pgoff = pgoff; in do_brk_flags()
3120 vma->vm_flags = flags; in do_brk_flags()
3121 vma->vm_page_prot = vm_get_page_prot(flags); in do_brk_flags()
3122 vma_link(mm, vma, prev, rb_link, rb_parent); in do_brk_flags()
3124 perf_event_mmap(vma); in do_brk_flags()
3129 vma->vm_flags |= VM_SOFTDIRTY; in do_brk_flags()
3170 struct vm_area_struct *vma; in exit_mmap() local
3201 vma = mm->mmap; in exit_mmap()
3202 while (vma) { in exit_mmap()
3203 if (vma->vm_flags & VM_LOCKED) in exit_mmap()
3204 munlock_vma_pages_all(vma); in exit_mmap()
3205 vma = vma->vm_next; in exit_mmap()
3211 vma = mm->mmap; in exit_mmap()
3212 if (!vma) /* Can happen if dup_mmap() received an OOM */ in exit_mmap()
3220 unmap_vmas(&tlb, vma, 0, -1); in exit_mmap()
3221 free_pgtables(&tlb, vma, FIRST_USER_ADDRESS, USER_PGTABLES_CEILING); in exit_mmap()
3228 while (vma) { in exit_mmap()
3229 if (vma->vm_flags & VM_ACCOUNT) in exit_mmap()
3230 nr_accounted += vma_pages(vma); in exit_mmap()
3231 vma = remove_vma(vma); in exit_mmap()
3241 int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma) in insert_vm_struct() argument
3246 if (find_vma_links(mm, vma->vm_start, vma->vm_end, in insert_vm_struct()
3249 if ((vma->vm_flags & VM_ACCOUNT) && in insert_vm_struct()
3250 security_vm_enough_memory_mm(mm, vma_pages(vma))) in insert_vm_struct()
3265 if (vma_is_anonymous(vma)) { in insert_vm_struct()
3266 BUG_ON(vma->anon_vma); in insert_vm_struct()
3267 vma->vm_pgoff = vma->vm_start >> PAGE_SHIFT; in insert_vm_struct()
3270 vma_link(mm, vma, prev, rb_link, rb_parent); in insert_vm_struct()
3282 struct vm_area_struct *vma = *vmap; in copy_vma() local
3283 unsigned long vma_start = vma->vm_start; in copy_vma()
3284 struct mm_struct *mm = vma->vm_mm; in copy_vma()
3293 if (unlikely(vma_is_anonymous(vma) && !vma->anon_vma)) { in copy_vma()
3300 new_vma = vma_merge(mm, prev, addr, addr + len, vma->vm_flags, in copy_vma()
3301 vma->anon_vma, vma->vm_file, pgoff, vma_policy(vma), in copy_vma()
3302 vma->vm_userfaultfd_ctx); in copy_vma()
3322 *vmap = vma = new_vma; in copy_vma()
3324 *need_rmap_locks = (new_vma->vm_pgoff <= vma->vm_pgoff); in copy_vma()
3326 new_vma = vm_area_dup(vma); in copy_vma()
3332 if (vma_dup_policy(vma, new_vma)) in copy_vma()
3334 if (anon_vma_clone(new_vma, vma)) in copy_vma()
3399 static void special_mapping_close(struct vm_area_struct *vma) in special_mapping_close() argument
3403 static const char *special_mapping_name(struct vm_area_struct *vma) in special_mapping_name() argument
3405 return ((struct vm_special_mapping *)vma->vm_private_data)->name; in special_mapping_name()
3437 struct vm_area_struct *vma = vmf->vma; in special_mapping_fault() local
3441 if (vma->vm_ops == &legacy_special_mapping_vmops) { in special_mapping_fault()
3442 pages = vma->vm_private_data; in special_mapping_fault()
3444 struct vm_special_mapping *sm = vma->vm_private_data; in special_mapping_fault()
3447 return sm->fault(sm, vmf->vma, vmf); in special_mapping_fault()
3472 struct vm_area_struct *vma; in __install_special_mapping() local
3474 vma = vm_area_alloc(mm); in __install_special_mapping()
3475 if (unlikely(vma == NULL)) in __install_special_mapping()
3478 vma->vm_start = addr; in __install_special_mapping()
3479 vma->vm_end = addr + len; in __install_special_mapping()
3481 vma->vm_flags = vm_flags | mm->def_flags | VM_DONTEXPAND | VM_SOFTDIRTY; in __install_special_mapping()
3482 vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); in __install_special_mapping()
3484 vma->vm_ops = ops; in __install_special_mapping()
3485 vma->vm_private_data = priv; in __install_special_mapping()
3487 ret = insert_vm_struct(mm, vma); in __install_special_mapping()
3491 vm_stat_account(mm, vma->vm_flags, len >> PAGE_SHIFT); in __install_special_mapping()
3493 perf_event_mmap(vma); in __install_special_mapping()
3495 return vma; in __install_special_mapping()
3498 vm_area_free(vma); in __install_special_mapping()
3502 bool vma_is_special_mapping(const struct vm_area_struct *vma, in vma_is_special_mapping() argument
3505 return vma->vm_private_data == sm && in vma_is_special_mapping()
3506 (vma->vm_ops == &special_mapping_vmops || in vma_is_special_mapping()
3507 vma->vm_ops == &legacy_special_mapping_vmops); in vma_is_special_mapping()
3532 struct vm_area_struct *vma = __install_special_mapping( in install_special_mapping() local
3536 return PTR_ERR_OR_ZERO(vma); in install_special_mapping()
3621 struct vm_area_struct *vma; in mm_take_all_locks() local
3628 for (vma = mm->mmap; vma; vma = vma->vm_next) { in mm_take_all_locks()
3631 if (vma->vm_file && vma->vm_file->f_mapping && in mm_take_all_locks()
3632 is_vm_hugetlb_page(vma)) in mm_take_all_locks()
3633 vm_lock_mapping(mm, vma->vm_file->f_mapping); in mm_take_all_locks()
3636 for (vma = mm->mmap; vma; vma = vma->vm_next) { in mm_take_all_locks()
3639 if (vma->vm_file && vma->vm_file->f_mapping && in mm_take_all_locks()
3640 !is_vm_hugetlb_page(vma)) in mm_take_all_locks()
3641 vm_lock_mapping(mm, vma->vm_file->f_mapping); in mm_take_all_locks()
3644 for (vma = mm->mmap; vma; vma = vma->vm_next) { in mm_take_all_locks()
3647 if (vma->anon_vma) in mm_take_all_locks()
3648 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in mm_take_all_locks()
3701 struct vm_area_struct *vma; in mm_drop_all_locks() local
3707 for (vma = mm->mmap; vma; vma = vma->vm_next) { in mm_drop_all_locks()
3708 if (vma->anon_vma) in mm_drop_all_locks()
3709 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in mm_drop_all_locks()
3711 if (vma->vm_file && vma->vm_file->f_mapping) in mm_drop_all_locks()
3712 vm_unlock_mapping(vma->vm_file->f_mapping); in mm_drop_all_locks()