Cross Reference: /mm/mprotect.c

Lines Matching defs:vma
39 static pte_t *lock_pte_protection(struct vm_area_struct *vma, pmd_t *pmd,
47 		return pte_offset_map_lock(vma->vm_mm, pmd, addr, ptl);
49 	pmdl = pmd_lock(vma->vm_mm, pmd);
55 	pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, ptl);
60 static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
64 	struct mm_struct *mm = vma->vm_mm;
69 	pte = lock_pte_protection(vma, pmd, addr, prot_numa, &ptl);
91 				     !(vma->vm_flags & VM_SOFTDIRTY)))
98 				page = vm_normal_page(vma, addr, oldpte);
133 static inline unsigned long change_pmd_range(struct vm_area_struct *vma,
138 	struct mm_struct *mm = vma->vm_mm;
160 				split_huge_page_pmd(vma, addr, pmd);
162 				int nr_ptes = change_huge_pmd(vma, pmd, addr,
177 		this_pages = change_pte_range(vma, pmd, addr, next, newprot,
190 static inline unsigned long change_pud_range(struct vm_area_struct *vma,
203 		pages += change_pmd_range(vma, pud, addr, next, newprot,
210 static unsigned long change_protection_range(struct vm_area_struct *vma,
214 	struct mm_struct *mm = vma->vm_mm;
222 	flush_cache_range(vma, addr, end);
228 		pages += change_pud_range(vma, pgd, addr, next, newprot,
234 		flush_tlb_range(vma, start, end);
240 unsigned long change_protection(struct vm_area_struct *vma, unsigned long start,
246 	if (is_vm_hugetlb_page(vma))
247 		pages = hugetlb_change_protection(vma, start, end, newprot);
249 		pages = change_protection_range(vma, start, end, newprot, dirty_accountable, prot_numa);
255 mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
258 	struct mm_struct *mm = vma->vm_mm;
259 	unsigned long oldflags = vma->vm_flags;
267 		*pprev = vma;
288 	 * First try to merge with previous and/or next vma.
290 	pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT);
292 			vma->anon_vma, vma->vm_file, pgoff, vma_policy(vma),
293 			vma_get_anon_name(vma));
295 		vma = *pprev;
299 	*pprev = vma;
301 	if (start != vma->vm_start) {
302 		error = split_vma(mm, vma, start, 1);
307 	if (end != vma->vm_end) {
308 		error = split_vma(mm, vma, end, 0);
318 	vma->vm_flags = newflags;
319 	dirty_accountable = vma_wants_writenotify(vma);
320 	vma_set_page_prot(vma);
322 	change_protection(vma, start, end, vma->vm_page_prot,
325 	vm_stat_account(mm, oldflags, vma->vm_file, -nrpages);
326 	vm_stat_account(mm, newflags, vma->vm_file, nrpages);
327 	perf_event_mmap(vma);
339 	struct vm_area_struct *vma, *prev;
368 	vma = find_vma(current->mm, start);
370 	if (!vma)
372 	prev = vma->vm_prev;
374 		if (vma->vm_start >= end)
376 		start = vma->vm_start;
378 		if (!(vma->vm_flags & VM_GROWSDOWN))
381 		if (vma->vm_start > start)
384 			end = vma->vm_end;
386 			if (!(vma->vm_flags & VM_GROWSUP))
390 	if (start > vma->vm_start)
391 		prev = vma;
396 		/* Here we know that vma->vm_start <= nstart < vma->vm_end. */
399 		newflags |= (vma->vm_flags & ~(VM_READ | VM_WRITE | VM_EXEC));
407 		error = security_file_mprotect(vma, reqprot, prot);
411 		tmp = vma->vm_end;
414 		error = mprotect_fixup(vma, &prev, nstart, tmp, newflags);
424 		vma = prev->vm_next;
425 		if (!vma || vma->vm_start != nstart) {