linux-master/mm/madvise.c

139 			      unsigned long end, unsigned long new_flags,
146 	if (new_flags == vma->vm_flags && anon_vma_name_eq(anon_vma_name(vma), anon_name)) {
151 	vma = vma_modify_flags_name(&vmi, *prev, vma, start, end, new_flags,
160 	vm_flags_reset(vma, new_flags);
1009 	unsigned long new_flags = vma->vm_flags;
1028 		new_flags = new_flags & ~VM_RAND_READ & ~VM_SEQ_READ;
1031 		new_flags = (new_flags & ~VM_RAND_READ) | VM_SEQ_READ;
1034 		new_flags = (new_flags & ~VM_SEQ_READ) | VM_RAND_READ;
1037 		new_flags |= VM_DONTCOPY;
1042 		new_flags &= ~VM_DONTCOPY;
1048 		new_flags |= VM_WIPEONFORK;
1051 		new_flags &= ~VM_WIPEONFORK;
1054 		new_flags |= VM_DONTDUMP;
1057 		if (!is_vm_hugetlb_page(vma) && new_flags & VM_SPECIAL)
1059 		new_flags &= ~VM_DONTDUMP;
1063 		error = ksm_madvise(vma, start, end, behavior, &new_flags);
1069 		error = hugepage_madvise(vma, &new_flags, behavior);
1079 	error = madvise_update_vma(vma, prev, start, end, new_flags,