Lines Matching refs:vma
62 struct vm_area_struct *vma, struct vm_area_struct *prev,
99 void vma_set_page_prot(struct vm_area_struct *vma) in vma_set_page_prot() argument
101 unsigned long vm_flags = vma->vm_flags; in vma_set_page_prot()
103 vma->vm_page_prot = vm_pgprot_modify(vma->vm_page_prot, vm_flags); in vma_set_page_prot()
104 if (vma_wants_writenotify(vma)) { in vma_set_page_prot()
106 vma->vm_page_prot = vm_pgprot_modify(vma->vm_page_prot, in vma_set_page_prot()
238 static void __remove_shared_vm_struct(struct vm_area_struct *vma, in __remove_shared_vm_struct() argument
241 if (vma->vm_flags & VM_DENYWRITE) in __remove_shared_vm_struct()
243 if (vma->vm_flags & VM_SHARED) in __remove_shared_vm_struct()
247 vma_interval_tree_remove(vma, &mapping->i_mmap); in __remove_shared_vm_struct()
255 void unlink_file_vma(struct vm_area_struct *vma) in unlink_file_vma() argument
257 struct file *file = vma->vm_file; in unlink_file_vma()
262 __remove_shared_vm_struct(vma, file, mapping); in unlink_file_vma()
270 static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) in remove_vma() argument
272 struct vm_area_struct *next = vma->vm_next; in remove_vma()
275 if (vma->vm_ops && vma->vm_ops->close) in remove_vma()
276 vma->vm_ops->close(vma); in remove_vma()
277 if (vma->vm_file) in remove_vma()
278 fput(vma->vm_file); in remove_vma()
279 mpol_put(vma_policy(vma)); in remove_vma()
280 kmem_cache_free(vm_area_cachep, vma); in remove_vma()
356 static long vma_compute_subtree_gap(struct vm_area_struct *vma) in vma_compute_subtree_gap() argument
359 max = vma->vm_start; in vma_compute_subtree_gap()
360 if (vma->vm_prev) in vma_compute_subtree_gap()
361 max -= vma->vm_prev->vm_end; in vma_compute_subtree_gap()
362 if (vma->vm_rb.rb_left) { in vma_compute_subtree_gap()
363 subtree_gap = rb_entry(vma->vm_rb.rb_left, in vma_compute_subtree_gap()
368 if (vma->vm_rb.rb_right) { in vma_compute_subtree_gap()
369 subtree_gap = rb_entry(vma->vm_rb.rb_right, in vma_compute_subtree_gap()
385 struct vm_area_struct *vma; in browse_rb() local
386 vma = rb_entry(nd, struct vm_area_struct, vm_rb); in browse_rb()
387 if (vma->vm_start < prev) { in browse_rb()
389 vma->vm_start, prev); in browse_rb()
392 if (vma->vm_start < pend) { in browse_rb()
394 vma->vm_start, pend); in browse_rb()
397 if (vma->vm_start > vma->vm_end) { in browse_rb()
399 vma->vm_start, vma->vm_end); in browse_rb()
402 if (vma->rb_subtree_gap != vma_compute_subtree_gap(vma)) { in browse_rb()
404 vma->rb_subtree_gap, in browse_rb()
405 vma_compute_subtree_gap(vma)); in browse_rb()
410 prev = vma->vm_start; in browse_rb()
411 pend = vma->vm_end; in browse_rb()
428 struct vm_area_struct *vma; in validate_mm_rb() local
429 vma = rb_entry(nd, struct vm_area_struct, vm_rb); in validate_mm_rb()
430 VM_BUG_ON_VMA(vma != ignore && in validate_mm_rb()
431 vma->rb_subtree_gap != vma_compute_subtree_gap(vma), in validate_mm_rb()
432 vma); in validate_mm_rb()
441 struct vm_area_struct *vma = mm->mmap; in validate_mm() local
443 while (vma) { in validate_mm()
444 struct anon_vma *anon_vma = vma->anon_vma; in validate_mm()
449 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in validate_mm()
454 highest_address = vma->vm_end; in validate_mm()
455 vma = vma->vm_next; in validate_mm()
488 static void vma_gap_update(struct vm_area_struct *vma) in RB_DECLARE_CALLBACKS()
494 vma_gap_callbacks_propagate(&vma->vm_rb, NULL); in RB_DECLARE_CALLBACKS()
497 static inline void vma_rb_insert(struct vm_area_struct *vma, in vma_rb_insert() argument
503 rb_insert_augmented(&vma->vm_rb, root, &vma_gap_callbacks); in vma_rb_insert()
506 static void vma_rb_erase(struct vm_area_struct *vma, struct rb_root *root) in vma_rb_erase() argument
512 validate_mm_rb(root, vma); in vma_rb_erase()
519 rb_erase_augmented(&vma->vm_rb, root, &vma_gap_callbacks); in vma_rb_erase()
537 anon_vma_interval_tree_pre_update_vma(struct vm_area_struct *vma) in anon_vma_interval_tree_pre_update_vma() argument
541 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in anon_vma_interval_tree_pre_update_vma()
546 anon_vma_interval_tree_post_update_vma(struct vm_area_struct *vma) in anon_vma_interval_tree_post_update_vma() argument
550 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in anon_vma_interval_tree_post_update_vma()
592 struct vm_area_struct *vma; in count_vma_pages_range() local
595 vma = find_vma_intersection(mm, addr, end); in count_vma_pages_range()
596 if (!vma) in count_vma_pages_range()
599 nr_pages = (min(end, vma->vm_end) - in count_vma_pages_range()
600 max(addr, vma->vm_start)) >> PAGE_SHIFT; in count_vma_pages_range()
603 for (vma = vma->vm_next; vma; vma = vma->vm_next) { in count_vma_pages_range()
606 if (vma->vm_start > end) in count_vma_pages_range()
609 overlap_len = min(end, vma->vm_end) - vma->vm_start; in count_vma_pages_range()
616 void __vma_link_rb(struct mm_struct *mm, struct vm_area_struct *vma, in __vma_link_rb() argument
620 if (vma->vm_next) in __vma_link_rb()
621 vma_gap_update(vma->vm_next); in __vma_link_rb()
623 mm->highest_vm_end = vma->vm_end; in __vma_link_rb()
634 rb_link_node(&vma->vm_rb, rb_parent, rb_link); in __vma_link_rb()
635 vma->rb_subtree_gap = 0; in __vma_link_rb()
636 vma_gap_update(vma); in __vma_link_rb()
637 vma_rb_insert(vma, &mm->mm_rb); in __vma_link_rb()
640 static void __vma_link_file(struct vm_area_struct *vma) in __vma_link_file() argument
644 file = vma->vm_file; in __vma_link_file()
648 if (vma->vm_flags & VM_DENYWRITE) in __vma_link_file()
650 if (vma->vm_flags & VM_SHARED) in __vma_link_file()
654 vma_interval_tree_insert(vma, &mapping->i_mmap); in __vma_link_file()
660 __vma_link(struct mm_struct *mm, struct vm_area_struct *vma, in __vma_link() argument
664 __vma_link_list(mm, vma, prev, rb_parent); in __vma_link()
665 __vma_link_rb(mm, vma, rb_link, rb_parent); in __vma_link()
668 static void vma_link(struct mm_struct *mm, struct vm_area_struct *vma, in vma_link() argument
674 if (vma->vm_file) { in vma_link()
675 mapping = vma->vm_file->f_mapping; in vma_link()
679 __vma_link(mm, vma, prev, rb_link, rb_parent); in vma_link()
680 __vma_link_file(vma); in vma_link()
693 static void __insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma) in __insert_vm_struct() argument
698 if (find_vma_links(mm, vma->vm_start, vma->vm_end, in __insert_vm_struct()
701 __vma_link(mm, vma, prev, rb_link, rb_parent); in __insert_vm_struct()
706 __vma_unlink(struct mm_struct *mm, struct vm_area_struct *vma, in __vma_unlink() argument
711 vma_rb_erase(vma, &mm->mm_rb); in __vma_unlink()
712 prev->vm_next = next = vma->vm_next; in __vma_unlink()
727 int vma_adjust(struct vm_area_struct *vma, unsigned long start, in vma_adjust() argument
730 struct mm_struct *mm = vma->vm_mm; in vma_adjust()
731 struct vm_area_struct *next = vma->vm_next; in vma_adjust()
736 struct file *file = vma->vm_file; in vma_adjust()
752 importer = vma; in vma_adjust()
760 importer = vma; in vma_adjust()
761 } else if (end < vma->vm_end) { in vma_adjust()
767 adjust_next = -((vma->vm_end - end) >> PAGE_SHIFT); in vma_adjust()
768 exporter = vma; in vma_adjust()
790 uprobe_munmap(vma, vma->vm_start, vma->vm_end); in vma_adjust()
807 vma_adjust_trans_huge(vma, start, end, adjust_next); in vma_adjust()
809 anon_vma = vma->anon_vma; in vma_adjust()
816 anon_vma_interval_tree_pre_update_vma(vma); in vma_adjust()
823 vma_interval_tree_remove(vma, root); in vma_adjust()
828 if (start != vma->vm_start) { in vma_adjust()
829 vma->vm_start = start; in vma_adjust()
832 if (end != vma->vm_end) { in vma_adjust()
833 vma->vm_end = end; in vma_adjust()
836 vma->vm_pgoff = pgoff; in vma_adjust()
845 vma_interval_tree_insert(vma, root); in vma_adjust()
854 __vma_unlink(mm, next, vma); in vma_adjust()
866 vma_gap_update(vma); in vma_adjust()
876 anon_vma_interval_tree_post_update_vma(vma); in vma_adjust()
885 uprobe_mmap(vma); in vma_adjust()
897 anon_vma_merge(vma, next); in vma_adjust()
906 next = vma->vm_next; in vma_adjust()
926 static inline int is_mergeable_vma(struct vm_area_struct *vma, in is_mergeable_vma() argument
938 if ((vma->vm_flags ^ vm_flags) & ~VM_SOFTDIRTY) in is_mergeable_vma()
940 if (vma->vm_file != file) in is_mergeable_vma()
942 if (vma->vm_ops && vma->vm_ops->close) in is_mergeable_vma()
944 if (!is_mergeable_vm_userfaultfd_ctx(vma, vm_userfaultfd_ctx)) in is_mergeable_vma()
951 struct vm_area_struct *vma) in is_mergeable_anon_vma() argument
957 if ((!anon_vma1 || !anon_vma2) && (!vma || in is_mergeable_anon_vma()
958 list_is_singular(&vma->anon_vma_chain))) in is_mergeable_anon_vma()
975 can_vma_merge_before(struct vm_area_struct *vma, unsigned long vm_flags, in can_vma_merge_before() argument
980 if (is_mergeable_vma(vma, file, vm_flags, vm_userfaultfd_ctx) && in can_vma_merge_before()
981 is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) { in can_vma_merge_before()
982 if (vma->vm_pgoff == vm_pgoff) in can_vma_merge_before()
996 can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags, in can_vma_merge_after() argument
1001 if (is_mergeable_vma(vma, file, vm_flags, vm_userfaultfd_ctx) && in can_vma_merge_after()
1002 is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) { in can_vma_merge_after()
1004 vm_pglen = vma_pages(vma); in can_vma_merge_after()
1005 if (vma->vm_pgoff + vm_pglen == vm_pgoff) in can_vma_merge_after()
1183 struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *vma) in find_mergeable_anon_vma() argument
1188 near = vma->vm_next; in find_mergeable_anon_vma()
1192 anon_vma = reusable_anon_vma(near, vma, near); in find_mergeable_anon_vma()
1196 near = vma->vm_prev; in find_mergeable_anon_vma()
1200 anon_vma = reusable_anon_vma(near, near, vma); in find_mergeable_anon_vma()
1493 int vma_wants_writenotify(struct vm_area_struct *vma) in vma_wants_writenotify() argument
1495 vm_flags_t vm_flags = vma->vm_flags; in vma_wants_writenotify()
1496 const struct vm_operations_struct *vm_ops = vma->vm_ops; in vma_wants_writenotify()
1508 if (pgprot_val(vma->vm_page_prot) != in vma_wants_writenotify()
1509 pgprot_val(vm_pgprot_modify(vma->vm_page_prot, vm_flags))) in vma_wants_writenotify()
1521 return vma->vm_file && vma->vm_file->f_mapping && in vma_wants_writenotify()
1522 mapping_cap_account_dirty(vma->vm_file->f_mapping); in vma_wants_writenotify()
1545 struct vm_area_struct *vma, *prev; in mmap_region() local
1587 vma = vma_merge(mm, prev, addr, addr + len, vm_flags, in mmap_region()
1589 if (vma) in mmap_region()
1597 vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); in mmap_region()
1598 if (!vma) { in mmap_region()
1603 vma->vm_mm = mm; in mmap_region()
1604 vma->vm_start = addr; in mmap_region()
1605 vma->vm_end = addr + len; in mmap_region()
1606 vma->vm_flags = vm_flags; in mmap_region()
1607 vma->vm_page_prot = vm_get_page_prot(vm_flags); in mmap_region()
1608 vma->vm_pgoff = pgoff; in mmap_region()
1609 INIT_LIST_HEAD(&vma->anon_vma_chain); in mmap_region()
1628 vma->vm_file = get_file(file); in mmap_region()
1629 error = file->f_op->mmap(file, vma); in mmap_region()
1640 WARN_ON_ONCE(addr != vma->vm_start); in mmap_region()
1642 addr = vma->vm_start; in mmap_region()
1643 vm_flags = vma->vm_flags; in mmap_region()
1645 error = shmem_zero_setup(vma); in mmap_region()
1650 vma_link(mm, vma, prev, rb_link, rb_parent); in mmap_region()
1658 file = vma->vm_file; in mmap_region()
1660 perf_event_mmap(vma); in mmap_region()
1664 if (!((vm_flags & VM_SPECIAL) || is_vm_hugetlb_page(vma) || in mmap_region()
1665 vma == get_gate_vma(current->mm))) in mmap_region()
1668 vma->vm_flags &= VM_LOCKED_CLEAR_MASK; in mmap_region()
1672 uprobe_mmap(vma); in mmap_region()
1681 vma->vm_flags |= VM_SOFTDIRTY; in mmap_region()
1683 vma_set_page_prot(vma); in mmap_region()
1688 vma->vm_file = NULL; in mmap_region()
1692 unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end); in mmap_region()
1700 kmem_cache_free(vm_area_cachep, vma); in mmap_region()
1718 struct vm_area_struct *vma; in unmapped_area() local
1738 vma = rb_entry(mm->mm_rb.rb_node, struct vm_area_struct, vm_rb); in unmapped_area()
1739 if (vma->rb_subtree_gap < length) in unmapped_area()
1744 gap_end = vma->vm_start; in unmapped_area()
1745 if (gap_end >= low_limit && vma->vm_rb.rb_left) { in unmapped_area()
1747 rb_entry(vma->vm_rb.rb_left, in unmapped_area()
1750 vma = left; in unmapped_area()
1755 gap_start = vma->vm_prev ? vma->vm_prev->vm_end : 0; in unmapped_area()
1764 if (vma->vm_rb.rb_right) { in unmapped_area()
1766 rb_entry(vma->vm_rb.rb_right, in unmapped_area()
1769 vma = right; in unmapped_area()
1776 struct rb_node *prev = &vma->vm_rb; in unmapped_area()
1779 vma = rb_entry(rb_parent(prev), in unmapped_area()
1781 if (prev == vma->vm_rb.rb_left) { in unmapped_area()
1782 gap_start = vma->vm_prev->vm_end; in unmapped_area()
1783 gap_end = vma->vm_start; in unmapped_area()
1812 struct vm_area_struct *vma; in unmapped_area_topdown() local
1841 vma = rb_entry(mm->mm_rb.rb_node, struct vm_area_struct, vm_rb); in unmapped_area_topdown()
1842 if (vma->rb_subtree_gap < length) in unmapped_area_topdown()
1847 gap_start = vma->vm_prev ? vma->vm_prev->vm_end : 0; in unmapped_area_topdown()
1848 if (gap_start <= high_limit && vma->vm_rb.rb_right) { in unmapped_area_topdown()
1850 rb_entry(vma->vm_rb.rb_right, in unmapped_area_topdown()
1853 vma = right; in unmapped_area_topdown()
1860 gap_end = vma->vm_start; in unmapped_area_topdown()
1867 if (vma->vm_rb.rb_left) { in unmapped_area_topdown()
1869 rb_entry(vma->vm_rb.rb_left, in unmapped_area_topdown()
1872 vma = left; in unmapped_area_topdown()
1879 struct rb_node *prev = &vma->vm_rb; in unmapped_area_topdown()
1882 vma = rb_entry(rb_parent(prev), in unmapped_area_topdown()
1884 if (prev == vma->vm_rb.rb_right) { in unmapped_area_topdown()
1885 gap_start = vma->vm_prev ? in unmapped_area_topdown()
1886 vma->vm_prev->vm_end : 0; in unmapped_area_topdown()
1924 struct vm_area_struct *vma; in arch_get_unmapped_area() local
1935 vma = find_vma(mm, addr); in arch_get_unmapped_area()
1937 (!vma || addr + len <= vma->vm_start)) in arch_get_unmapped_area()
1960 struct vm_area_struct *vma; in arch_get_unmapped_area_topdown() local
1975 vma = find_vma(mm, addr); in arch_get_unmapped_area_topdown()
1977 (!vma || addr + len <= vma->vm_start)) in arch_get_unmapped_area_topdown()
2044 struct vm_area_struct *vma; in find_vma() local
2047 vma = vmacache_find(mm, addr); in find_vma()
2048 if (likely(vma)) in find_vma()
2049 return vma; in find_vma()
2059 vma = tmp; in find_vma()
2067 if (vma) in find_vma()
2068 vmacache_update(addr, vma); in find_vma()
2069 return vma; in find_vma()
2081 struct vm_area_struct *vma; in find_vma_prev() local
2083 vma = find_vma(mm, addr); in find_vma_prev()
2084 if (vma) { in find_vma_prev()
2085 *pprev = vma->vm_prev; in find_vma_prev()
2094 return vma; in find_vma_prev()
2102 static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, unsigned long grow) in acct_stack_growth() argument
2104 struct mm_struct *mm = vma->vm_mm; in acct_stack_growth()
2114 if (size && (vma->vm_flags & (VM_GROWSUP | VM_GROWSDOWN))) in acct_stack_growth()
2120 if (vma->vm_flags & VM_LOCKED) { in acct_stack_growth()
2131 new_start = (vma->vm_flags & VM_GROWSUP) ? vma->vm_start : in acct_stack_growth()
2132 vma->vm_end - size; in acct_stack_growth()
2133 if (is_hugepage_only_range(vma->vm_mm, new_start, size)) in acct_stack_growth()
2151 int expand_upwards(struct vm_area_struct *vma, unsigned long address) in expand_upwards() argument
2153 struct mm_struct *mm = vma->vm_mm; in expand_upwards()
2156 if (!(vma->vm_flags & VM_GROWSUP)) in expand_upwards()
2166 if (unlikely(anon_vma_prepare(vma))) in expand_upwards()
2174 anon_vma_lock_write(vma->anon_vma); in expand_upwards()
2177 if (address > vma->vm_end) { in expand_upwards()
2180 size = address - vma->vm_start; in expand_upwards()
2181 grow = (address - vma->vm_end) >> PAGE_SHIFT; in expand_upwards()
2184 if (vma->vm_pgoff + (size >> PAGE_SHIFT) >= vma->vm_pgoff) { in expand_upwards()
2185 error = acct_stack_growth(vma, size, grow); in expand_upwards()
2199 if (vma->vm_flags & VM_LOCKED) in expand_upwards()
2201 vm_stat_account(mm, vma->vm_flags, in expand_upwards()
2202 vma->vm_file, grow); in expand_upwards()
2203 anon_vma_interval_tree_pre_update_vma(vma); in expand_upwards()
2204 vma->vm_end = address; in expand_upwards()
2205 anon_vma_interval_tree_post_update_vma(vma); in expand_upwards()
2206 if (vma->vm_next) in expand_upwards()
2207 vma_gap_update(vma->vm_next); in expand_upwards()
2212 perf_event_mmap(vma); in expand_upwards()
2216 anon_vma_unlock_write(vma->anon_vma); in expand_upwards()
2217 khugepaged_enter_vma_merge(vma, vma->vm_flags); in expand_upwards()
2226 int expand_downwards(struct vm_area_struct *vma, in expand_downwards() argument
2229 struct mm_struct *mm = vma->vm_mm; in expand_downwards()
2238 if (unlikely(anon_vma_prepare(vma))) in expand_downwards()
2246 anon_vma_lock_write(vma->anon_vma); in expand_downwards()
2249 if (address < vma->vm_start) { in expand_downwards()
2252 size = vma->vm_end - address; in expand_downwards()
2253 grow = (vma->vm_start - address) >> PAGE_SHIFT; in expand_downwards()
2256 if (grow <= vma->vm_pgoff) { in expand_downwards()
2257 error = acct_stack_growth(vma, size, grow); in expand_downwards()
2271 if (vma->vm_flags & VM_LOCKED) in expand_downwards()
2273 vm_stat_account(mm, vma->vm_flags, in expand_downwards()
2274 vma->vm_file, grow); in expand_downwards()
2275 anon_vma_interval_tree_pre_update_vma(vma); in expand_downwards()
2276 vma->vm_start = address; in expand_downwards()
2277 vma->vm_pgoff -= grow; in expand_downwards()
2278 anon_vma_interval_tree_post_update_vma(vma); in expand_downwards()
2279 vma_gap_update(vma); in expand_downwards()
2282 perf_event_mmap(vma); in expand_downwards()
2286 anon_vma_unlock_write(vma->anon_vma); in expand_downwards()
2287 khugepaged_enter_vma_merge(vma, vma->vm_flags); in expand_downwards()
2304 int expand_stack(struct vm_area_struct *vma, unsigned long address) in expand_stack() argument
2309 next = vma->vm_next; in expand_stack()
2314 return expand_upwards(vma, address); in expand_stack()
2320 struct vm_area_struct *vma, *prev; in find_extend_vma() local
2323 vma = find_vma_prev(mm, addr, &prev); in find_extend_vma()
2324 if (vma && (vma->vm_start <= addr)) in find_extend_vma()
2325 return vma; in find_extend_vma()
2333 int expand_stack(struct vm_area_struct *vma, unsigned long address) in expand_stack() argument
2338 prev = vma->vm_prev; in expand_stack()
2343 return expand_downwards(vma, address); in expand_stack()
2349 struct vm_area_struct *vma; in find_extend_vma() local
2353 vma = find_vma(mm, addr); in find_extend_vma()
2354 if (!vma) in find_extend_vma()
2356 if (vma->vm_start <= addr) in find_extend_vma()
2357 return vma; in find_extend_vma()
2358 if (!(vma->vm_flags & VM_GROWSDOWN)) in find_extend_vma()
2360 start = vma->vm_start; in find_extend_vma()
2361 if (expand_stack(vma, addr)) in find_extend_vma()
2363 if (vma->vm_flags & VM_LOCKED) in find_extend_vma()
2364 populate_vma_page_range(vma, addr, start, NULL); in find_extend_vma()
2365 return vma; in find_extend_vma()
2377 static void remove_vma_list(struct mm_struct *mm, struct vm_area_struct *vma) in remove_vma_list() argument
2384 long nrpages = vma_pages(vma); in remove_vma_list()
2386 if (vma->vm_flags & VM_ACCOUNT) in remove_vma_list()
2388 vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages); in remove_vma_list()
2389 vma = remove_vma(vma); in remove_vma_list()
2390 } while (vma); in remove_vma_list()
2401 struct vm_area_struct *vma, struct vm_area_struct *prev, in unmap_region() argument
2410 unmap_vmas(&tlb, vma, start, end); in unmap_region()
2411 free_pgtables(&tlb, vma, prev ? prev->vm_end : FIRST_USER_ADDRESS, in unmap_region()
2421 detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma, in detach_vmas_to_be_unmapped() argument
2428 vma->vm_prev = NULL; in detach_vmas_to_be_unmapped()
2430 vma_rb_erase(vma, &mm->mm_rb); in detach_vmas_to_be_unmapped()
2432 tail_vma = vma; in detach_vmas_to_be_unmapped()
2433 vma = vma->vm_next; in detach_vmas_to_be_unmapped()
2434 } while (vma && vma->vm_start < end); in detach_vmas_to_be_unmapped()
2435 *insertion_point = vma; in detach_vmas_to_be_unmapped()
2436 if (vma) { in detach_vmas_to_be_unmapped()
2437 vma->vm_prev = prev; in detach_vmas_to_be_unmapped()
2438 vma_gap_update(vma); in detach_vmas_to_be_unmapped()
2451 static int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, in __split_vma() argument
2457 if (is_vm_hugetlb_page(vma) && (addr & in __split_vma()
2458 ~(huge_page_mask(hstate_vma(vma))))) in __split_vma()
2466 *new = *vma; in __split_vma()
2474 new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT); in __split_vma()
2477 err = vma_dup_policy(vma, new); in __split_vma()
2481 err = anon_vma_clone(new, vma); in __split_vma()
2492 err = vma_adjust(vma, addr, vma->vm_end, vma->vm_pgoff + in __split_vma()
2495 err = vma_adjust(vma, vma->vm_start, addr, vma->vm_pgoff, new); in __split_vma()
2518 int split_vma(struct mm_struct *mm, struct vm_area_struct *vma, in split_vma() argument
2524 return __split_vma(mm, vma, addr, new_below); in split_vma()
2535 struct vm_area_struct *vma, *prev, *last; in do_munmap() local
2545 vma = find_vma(mm, start); in do_munmap()
2546 if (!vma) in do_munmap()
2548 prev = vma->vm_prev; in do_munmap()
2553 if (vma->vm_start >= end) in do_munmap()
2563 if (start > vma->vm_start) { in do_munmap()
2571 if (end < vma->vm_end && mm->map_count >= sysctl_max_map_count) in do_munmap()
2574 error = __split_vma(mm, vma, start, 0); in do_munmap()
2577 prev = vma; in do_munmap()
2587 vma = prev ? prev->vm_next : mm->mmap; in do_munmap()
2593 struct vm_area_struct *tmp = vma; in do_munmap()
2606 detach_vmas_to_be_unmapped(mm, vma, prev, end); in do_munmap()
2607 unmap_region(mm, vma, prev, start, end); in do_munmap()
2609 arch_unmap(mm, vma, start, end); in do_munmap()
2612 remove_vma_list(mm, vma); in do_munmap()
2644 struct vm_area_struct *vma; in SYSCALL_DEFINE5() local
2666 vma = find_vma(mm, start); in SYSCALL_DEFINE5()
2668 if (!vma || !(vma->vm_flags & VM_SHARED)) in SYSCALL_DEFINE5()
2671 if (start < vma->vm_start) in SYSCALL_DEFINE5()
2674 if (start + size > vma->vm_end) { in SYSCALL_DEFINE5()
2677 for (next = vma->vm_next; next; next = next->vm_next) { in SYSCALL_DEFINE5()
2682 if (next->vm_file != vma->vm_file) in SYSCALL_DEFINE5()
2685 if (next->vm_flags != vma->vm_flags) in SYSCALL_DEFINE5()
2696 prot |= vma->vm_flags & VM_READ ? PROT_READ : 0; in SYSCALL_DEFINE5()
2697 prot |= vma->vm_flags & VM_WRITE ? PROT_WRITE : 0; in SYSCALL_DEFINE5()
2698 prot |= vma->vm_flags & VM_EXEC ? PROT_EXEC : 0; in SYSCALL_DEFINE5()
2702 if (vma->vm_flags & VM_LOCKED) { in SYSCALL_DEFINE5()
2707 for (tmp = vma; tmp->vm_start >= start + size; in SYSCALL_DEFINE5()
2715 file = get_file(vma->vm_file); in SYSCALL_DEFINE5()
2716 ret = do_mmap_pgoff(vma->vm_file, start, size, in SYSCALL_DEFINE5()
2746 struct vm_area_struct *vma, *prev; in do_brk() local
2792 vma = vma_merge(mm, prev, addr, addr + len, flags, in do_brk()
2794 if (vma) in do_brk()
2800 vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); in do_brk()
2801 if (!vma) { in do_brk()
2806 INIT_LIST_HEAD(&vma->anon_vma_chain); in do_brk()
2807 vma->vm_mm = mm; in do_brk()
2808 vma->vm_start = addr; in do_brk()
2809 vma->vm_end = addr + len; in do_brk()
2810 vma->vm_pgoff = pgoff; in do_brk()
2811 vma->vm_flags = flags; in do_brk()
2812 vma->vm_page_prot = vm_get_page_prot(flags); in do_brk()
2813 vma_link(mm, vma, prev, rb_link, rb_parent); in do_brk()
2815 perf_event_mmap(vma); in do_brk()
2819 vma->vm_flags |= VM_SOFTDIRTY; in do_brk()
2843 struct vm_area_struct *vma; in exit_mmap() local
2850 vma = mm->mmap; in exit_mmap()
2851 while (vma) { in exit_mmap()
2852 if (vma->vm_flags & VM_LOCKED) in exit_mmap()
2853 munlock_vma_pages_all(vma); in exit_mmap()
2854 vma = vma->vm_next; in exit_mmap()
2860 vma = mm->mmap; in exit_mmap()
2861 if (!vma) /* Can happen if dup_mmap() received an OOM */ in exit_mmap()
2869 unmap_vmas(&tlb, vma, 0, -1); in exit_mmap()
2871 free_pgtables(&tlb, vma, FIRST_USER_ADDRESS, USER_PGTABLES_CEILING); in exit_mmap()
2878 while (vma) { in exit_mmap()
2879 if (vma->vm_flags & VM_ACCOUNT) in exit_mmap()
2880 nr_accounted += vma_pages(vma); in exit_mmap()
2881 vma = remove_vma(vma); in exit_mmap()
2890 int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma) in insert_vm_struct() argument
2895 if (find_vma_links(mm, vma->vm_start, vma->vm_end, in insert_vm_struct()
2898 if ((vma->vm_flags & VM_ACCOUNT) && in insert_vm_struct()
2899 security_vm_enough_memory_mm(mm, vma_pages(vma))) in insert_vm_struct()
2914 if (vma_is_anonymous(vma)) { in insert_vm_struct()
2915 BUG_ON(vma->anon_vma); in insert_vm_struct()
2916 vma->vm_pgoff = vma->vm_start >> PAGE_SHIFT; in insert_vm_struct()
2919 vma_link(mm, vma, prev, rb_link, rb_parent); in insert_vm_struct()
2931 struct vm_area_struct *vma = *vmap; in copy_vma() local
2932 unsigned long vma_start = vma->vm_start; in copy_vma()
2933 struct mm_struct *mm = vma->vm_mm; in copy_vma()
2942 if (unlikely(vma_is_anonymous(vma) && !vma->anon_vma)) { in copy_vma()
2949 new_vma = vma_merge(mm, prev, addr, addr + len, vma->vm_flags, in copy_vma()
2950 vma->anon_vma, vma->vm_file, pgoff, vma_policy(vma), in copy_vma()
2951 vma->vm_userfaultfd_ctx); in copy_vma()
2971 *vmap = vma = new_vma; in copy_vma()
2973 *need_rmap_locks = (new_vma->vm_pgoff <= vma->vm_pgoff); in copy_vma()
2978 *new_vma = *vma; in copy_vma()
2982 if (vma_dup_policy(vma, new_vma)) in copy_vma()
2985 if (anon_vma_clone(new_vma, vma)) in copy_vma()
3020 static int special_mapping_fault(struct vm_area_struct *vma,
3026 static void special_mapping_close(struct vm_area_struct *vma) in special_mapping_close() argument
3030 static const char *special_mapping_name(struct vm_area_struct *vma) in special_mapping_name() argument
3032 return ((struct vm_special_mapping *)vma->vm_private_data)->name; in special_mapping_name()
3046 static int special_mapping_fault(struct vm_area_struct *vma, in special_mapping_fault() argument
3052 if (vma->vm_ops == &legacy_special_mapping_vmops) in special_mapping_fault()
3053 pages = vma->vm_private_data; in special_mapping_fault()
3055 pages = ((struct vm_special_mapping *)vma->vm_private_data)-> in special_mapping_fault()
3078 struct vm_area_struct *vma; in __install_special_mapping() local
3080 vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); in __install_special_mapping()
3081 if (unlikely(vma == NULL)) in __install_special_mapping()
3084 INIT_LIST_HEAD(&vma->anon_vma_chain); in __install_special_mapping()
3085 vma->vm_mm = mm; in __install_special_mapping()
3086 vma->vm_start = addr; in __install_special_mapping()
3087 vma->vm_end = addr + len; in __install_special_mapping()
3089 vma->vm_flags = vm_flags | mm->def_flags | VM_DONTEXPAND | VM_SOFTDIRTY; in __install_special_mapping()
3090 vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); in __install_special_mapping()
3092 vma->vm_ops = ops; in __install_special_mapping()
3093 vma->vm_private_data = priv; in __install_special_mapping()
3095 ret = insert_vm_struct(mm, vma); in __install_special_mapping()
3101 perf_event_mmap(vma); in __install_special_mapping()
3103 return vma; in __install_special_mapping()
3106 kmem_cache_free(vm_area_cachep, vma); in __install_special_mapping()
3132 struct vm_area_struct *vma = __install_special_mapping( in install_special_mapping() local
3136 return PTR_ERR_OR_ZERO(vma); in install_special_mapping()
3215 struct vm_area_struct *vma; in mm_take_all_locks() local
3222 for (vma = mm->mmap; vma; vma = vma->vm_next) { in mm_take_all_locks()
3225 if (vma->vm_file && vma->vm_file->f_mapping) in mm_take_all_locks()
3226 vm_lock_mapping(mm, vma->vm_file->f_mapping); in mm_take_all_locks()
3229 for (vma = mm->mmap; vma; vma = vma->vm_next) { in mm_take_all_locks()
3232 if (vma->anon_vma) in mm_take_all_locks()
3233 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in mm_take_all_locks()
3286 struct vm_area_struct *vma; in mm_drop_all_locks() local
3292 for (vma = mm->mmap; vma; vma = vma->vm_next) { in mm_drop_all_locks()
3293 if (vma->anon_vma) in mm_drop_all_locks()
3294 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma) in mm_drop_all_locks()
3296 if (vma->vm_file && vma->vm_file->f_mapping) in mm_drop_all_locks()
3297 vm_unlock_mapping(vma->vm_file->f_mapping); in mm_drop_all_locks()