303 static inline int private_mapping_ok(struct vm_area_struct *vma)  in private_mapping_ok()  argument
305 	return vma->vm_flags & VM_MAYSHARE;  in private_mapping_ok()
309 static inline int private_mapping_ok(struct vm_area_struct *vma)  in private_mapping_ok()  argument
321 static int mmap_mem(struct file *file, struct vm_area_struct *vma)  in mmap_mem()  argument
323 	size_t size = vma->vm_end - vma->vm_start;  in mmap_mem()
325 	if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size))  in mmap_mem()
328 	if (!private_mapping_ok(vma))  in mmap_mem()
331 	if (!range_is_allowed(vma->vm_pgoff, size))  in mmap_mem()
334 	if (!phys_mem_access_prot_allowed(file, vma->vm_pgoff, size,  in mmap_mem()
335 						&vma->vm_page_prot))  in mmap_mem()
338 	vma->vm_page_prot = phys_mem_access_prot(file, vma->vm_pgoff,  in mmap_mem()
340 						 vma->vm_page_prot);  in mmap_mem()
342 	vma->vm_ops = &mmap_mem_ops;  in mmap_mem()
345 	if (remap_pfn_range(vma,  in mmap_mem()
346 			    vma->vm_start,  in mmap_mem()
347 			    vma->vm_pgoff,  in mmap_mem()
349 			    vma->vm_page_prot)) {  in mmap_mem()
355 static int mmap_kmem(struct file *file, struct vm_area_struct *vma)  in mmap_kmem()  argument
360 	pfn = __pa((u64)vma->vm_pgoff << PAGE_SHIFT) >> PAGE_SHIFT;  in mmap_kmem()
372 	vma->vm_pgoff = pfn;  in mmap_kmem()
373 	return mmap_mem(file, vma);  in mmap_kmem()
654 static int mmap_zero(struct file *file, struct vm_area_struct *vma)  in mmap_zero()  argument
659 	if (vma->vm_flags & VM_SHARED)  in mmap_zero()
660 		return shmem_zero_setup(vma);  in mmap_zero()