16  * @vec:	structure which receives pages / pfns of the addresses mapped.
19  * This function maps virtual addresses from @start and fills @vec structure
35 		     unsigned int gup_flags, 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()
71 		vec->got_ref = true;  in get_vaddr_frames()
72 		vec->is_pfns = false;  in get_vaddr_frames()
74 			gup_flags, (struct page **)(vec->ptrs), &locked);  in get_vaddr_frames()
78 	vec->got_ref = false;  in get_vaddr_frames()
79 	vec->is_pfns = true;  in get_vaddr_frames()
81 		unsigned long *nums = frame_vector_pfns(vec);  in get_vaddr_frames()
107 		vec->nr_frames = ret;  in get_vaddr_frames()
115  * @vec:	frame vector to put
121 void put_vaddr_frames(struct frame_vector *vec)  in put_vaddr_frames()  argument
126 	if (!vec->got_ref)  in put_vaddr_frames()
128 	pages = frame_vector_pages(vec);  in put_vaddr_frames()
131 	 * get_vaddr_frames() got pages but vec was later converted to pfns.  in put_vaddr_frames()
136 	for (i = 0; i < vec->nr_frames; i++)  in put_vaddr_frames()
138 	vec->got_ref = false;  in put_vaddr_frames()
140 	vec->nr_frames = 0;  in put_vaddr_frames()
146  * @vec:	frame vector to convert
148  * Convert @vec to contain array of page pointers.  If the conversion is
152 int frame_vector_to_pages(struct frame_vector *vec)  in frame_vector_to_pages()  argument
158 	if (!vec->is_pfns)  in frame_vector_to_pages()
160 	nums = frame_vector_pfns(vec);  in frame_vector_to_pages()
161 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
165 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
167 	vec->is_pfns = false;  in frame_vector_to_pages()
174  * @vec:	frame vector to convert
176  * Convert @vec to contain array of pfns.
178 void frame_vector_to_pfns(struct frame_vector *vec)  in frame_vector_to_pfns()  argument
184 	if (vec->is_pfns)  in frame_vector_to_pfns()
186 	pages = (struct page **)(vec->ptrs);  in frame_vector_to_pfns()
188 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pfns()
190 	vec->is_pfns = true;  in frame_vector_to_pfns()
203 	struct frame_vector *vec;  in frame_vector_create()  local
218 	vec = kvmalloc(size, GFP_KERNEL);  in frame_vector_create()
219 	if (!vec)  in frame_vector_create()
221 	vec->nr_allocated = nr_frames;  in frame_vector_create()
222 	vec->nr_frames = 0;  in frame_vector_create()
223 	return vec;  in frame_vector_create()
229  * @vec:	Frame vector to free
233 void frame_vector_destroy(struct frame_vector *vec)  in frame_vector_destroy()  argument
236 	VM_BUG_ON(vec->nr_frames > 0);  in frame_vector_destroy()
237 	kvfree(vec);  in frame_vector_destroy()