17  * @vec:	structure which receives pages / pfns of the addresses mapped.
20  * This function maps virtual addresses from @start and fills @vec structure
36 		     struct frame_vector *vec)  in get_vaddr_frames()  argument
46 	if (WARN_ON_ONCE(nr_frames > vec->nr_allocated))  in get_vaddr_frames()
47 		nr_frames = vec->nr_allocated;  in get_vaddr_frames()
53 				  (struct page **)(vec->ptrs));  in get_vaddr_frames()
55 		vec->got_ref = true;  in get_vaddr_frames()
56 		vec->is_pfns = false;  in get_vaddr_frames()
61 	vec->got_ref = false;  in get_vaddr_frames()
62 	vec->is_pfns = true;  in get_vaddr_frames()
65 		unsigned long *nums = frame_vector_pfns(vec);  in get_vaddr_frames()
91 		vec->nr_frames = ret;  in get_vaddr_frames()
99  * @vec:	frame vector to put
105 void put_vaddr_frames(struct frame_vector *vec)  in put_vaddr_frames()  argument
109 	if (!vec->got_ref)  in put_vaddr_frames()
111 	pages = frame_vector_pages(vec);  in put_vaddr_frames()
114 	 * get_vaddr_frames() got pages but vec was later converted to pfns.  in put_vaddr_frames()
120 	unpin_user_pages(pages, vec->nr_frames);  in put_vaddr_frames()
121 	vec->got_ref = false;  in put_vaddr_frames()
123 	vec->nr_frames = 0;  in put_vaddr_frames()
129  * @vec:	frame vector to convert
131  * Convert @vec to contain array of page pointers.  If the conversion is
135 int frame_vector_to_pages(struct frame_vector *vec)  in frame_vector_to_pages()  argument
141 	if (!vec->is_pfns)  in frame_vector_to_pages()
143 	nums = frame_vector_pfns(vec);  in frame_vector_to_pages()
144 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
148 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
150 	vec->is_pfns = false;  in frame_vector_to_pages()
157  * @vec:	frame vector to convert
159  * Convert @vec to contain array of pfns.
161 void frame_vector_to_pfns(struct frame_vector *vec)  in frame_vector_to_pfns()  argument
167 	if (vec->is_pfns)  in frame_vector_to_pfns()
169 	pages = (struct page **)(vec->ptrs);  in frame_vector_to_pfns()
171 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pfns()
173 	vec->is_pfns = true;  in frame_vector_to_pfns()
186 	struct frame_vector *vec;  in frame_vector_create()  local
201 	vec = kvmalloc(size, GFP_KERNEL);  in frame_vector_create()
202 	if (!vec)  in frame_vector_create()
204 	vec->nr_allocated = nr_frames;  in frame_vector_create()
205 	vec->nr_frames = 0;  in frame_vector_create()
206 	return vec;  in frame_vector_create()
212  * @vec:	Frame vector to free
216 void frame_vector_destroy(struct frame_vector *vec)  in frame_vector_destroy()  argument
219 	VM_BUG_ON(vec->nr_frames > 0);  in frame_vector_destroy()
220 	kvfree(vec);  in frame_vector_destroy()