16  * @vec:	structure which receives pages / pfns of the addresses mapped.
19  * This function maps virtual addresses from @start and fills @vec structure
39 		     unsigned int gup_flags, struct frame_vector *vec)  in get_vaddr_frames()  argument
49 	if (WARN_ON_ONCE(nr_frames > vec->nr_allocated))  in get_vaddr_frames()
50 		nr_frames = vec->nr_allocated;  in get_vaddr_frames()
76 		vec->got_ref = true;  in get_vaddr_frames()
77 		vec->is_pfns = false;  in get_vaddr_frames()
79 			gup_flags, (struct page **)(vec->ptrs), &locked);  in get_vaddr_frames()
84 	vec->nr_frames = 0;  in get_vaddr_frames()
92 		vec->nr_frames = ret;  in get_vaddr_frames()
100  * @vec:	frame vector to put
106 void put_vaddr_frames(struct frame_vector *vec)  in put_vaddr_frames()  argument
110 	if (!vec->got_ref)  in put_vaddr_frames()
112 	pages = frame_vector_pages(vec);  in put_vaddr_frames()
115 	 * get_vaddr_frames() got pages but vec was later converted to pfns.  in put_vaddr_frames()
121 	unpin_user_pages(pages, vec->nr_frames);  in put_vaddr_frames()
122 	vec->got_ref = false;  in put_vaddr_frames()
124 	vec->nr_frames = 0;  in put_vaddr_frames()
130  * @vec:	frame vector to convert
132  * Convert @vec to contain array of page pointers.  If the conversion is
136 int frame_vector_to_pages(struct frame_vector *vec)  in frame_vector_to_pages()  argument
142 	if (!vec->is_pfns)  in frame_vector_to_pages()
144 	nums = frame_vector_pfns(vec);  in frame_vector_to_pages()
145 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
149 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
151 	vec->is_pfns = false;  in frame_vector_to_pages()
158  * @vec:	frame vector to convert
160  * Convert @vec to contain array of pfns.
162 void frame_vector_to_pfns(struct frame_vector *vec)  in frame_vector_to_pfns()  argument
168 	if (vec->is_pfns)  in frame_vector_to_pfns()
170 	pages = (struct page **)(vec->ptrs);  in frame_vector_to_pfns()
172 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pfns()
174 	vec->is_pfns = true;  in frame_vector_to_pfns()
187 	struct frame_vector *vec;  in frame_vector_create()  local
202 	vec = kvmalloc(size, GFP_KERNEL);  in frame_vector_create()
203 	if (!vec)  in frame_vector_create()
205 	vec->nr_allocated = nr_frames;  in frame_vector_create()
206 	vec->nr_frames = 0;  in frame_vector_create()
207 	return vec;  in frame_vector_create()
213  * @vec:	Frame vector to free
217 void frame_vector_destroy(struct frame_vector *vec)  in frame_vector_destroy()  argument
220 	VM_BUG_ON(vec->nr_frames > 0);  in frame_vector_destroy()
221 	kvfree(vec);  in frame_vector_destroy()