linux-master/mm/mprotect.c

85 		unsigned long end, pgprot_t newprot, unsigned long cp_flags)
91 	bool prot_numa = cp_flags & MM_CP_PROT_NUMA;
92 	bool uffd_wp = cp_flags & MM_CP_UFFD_WP;
93 	bool uffd_wp_resolve = cp_flags & MM_CP_UFFD_WP_RESOLVE;
188 			if ((cp_flags & MM_CP_TRY_CHANGE_WRITABLE) &&
299 pgtable_split_needed(struct vm_area_struct *vma, unsigned long cp_flags)
306 	return (cp_flags & MM_CP_UFFD_WP) && !vma_is_anonymous(vma);
314 pgtable_populate_needed(struct vm_area_struct *vma, unsigned long cp_flags)
317 	if (!(cp_flags & MM_CP_UFFD_WP))
330 #define  change_pmd_prepare(vma, pmd, cp_flags)				\
333 		if (unlikely(pgtable_populate_needed(vma, cp_flags))) {	\
345 #define  change_prepare(vma, high, low, addr, cp_flags)			\
348 		if (unlikely(pgtable_populate_needed(vma, cp_flags))) {	\
358 		unsigned long end, pgprot_t newprot, unsigned long cp_flags)
375 		ret = change_pmd_prepare(vma, pmd, cp_flags);
395 			    pgtable_split_needed(vma, cp_flags)) {
402 				ret = change_pmd_prepare(vma, pmd, cp_flags);
409 						addr, newprot, cp_flags);
424 				       cp_flags);
442 		unsigned long end, pgprot_t newprot, unsigned long cp_flags)
451 		ret = change_prepare(vma, pud, pmd, addr, cp_flags);
457 					  cp_flags);
465 		unsigned long end, pgprot_t newprot, unsigned long cp_flags)
474 		ret = change_prepare(vma, p4d, pud, addr, cp_flags);
480 					  cp_flags);
488 		unsigned long end, pgprot_t newprot, unsigned long cp_flags)
500 		ret = change_prepare(vma, pgd, p4d, addr, cp_flags);
508 					  cp_flags);
518 		       unsigned long end, unsigned long cp_flags)
523 	BUG_ON((cp_flags & MM_CP_UFFD_WP_ALL) == MM_CP_UFFD_WP_ALL);
531 	if (cp_flags & MM_CP_PROT_NUMA)
534 	WARN_ON_ONCE(cp_flags & MM_CP_PROT_NUMA);
539 						  cp_flags);
542 						cp_flags);