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()
73 		vec->got_ref = true;  in get_vaddr_frames()
74 		vec->is_pfns = false;  in get_vaddr_frames()
76 			gup_flags, (struct page **)(vec->ptrs), &locked);  in get_vaddr_frames()
80 	vec->got_ref = false;  in get_vaddr_frames()
81 	vec->is_pfns = true;  in get_vaddr_frames()
83 		unsigned long *nums = frame_vector_pfns(vec);  in get_vaddr_frames()
109 		vec->nr_frames = ret;  in get_vaddr_frames()
117  * @vec:	frame vector to put
123 void put_vaddr_frames(struct frame_vector *vec)  in put_vaddr_frames()  argument
127 	if (!vec->got_ref)  in put_vaddr_frames()
129 	pages = frame_vector_pages(vec);  in put_vaddr_frames()
132 	 * get_vaddr_frames() got pages but vec was later converted to pfns.  in put_vaddr_frames()
138 	unpin_user_pages(pages, vec->nr_frames);  in put_vaddr_frames()
139 	vec->got_ref = false;  in put_vaddr_frames()
141 	vec->nr_frames = 0;  in put_vaddr_frames()
147  * @vec:	frame vector to convert
149  * Convert @vec to contain array of page pointers.  If the conversion is
153 int frame_vector_to_pages(struct frame_vector *vec)  in frame_vector_to_pages()  argument
159 	if (!vec->is_pfns)  in frame_vector_to_pages()
161 	nums = frame_vector_pfns(vec);  in frame_vector_to_pages()
162 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
166 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pages()
168 	vec->is_pfns = false;  in frame_vector_to_pages()
175  * @vec:	frame vector to convert
177  * Convert @vec to contain array of pfns.
179 void frame_vector_to_pfns(struct frame_vector *vec)  in frame_vector_to_pfns()  argument
185 	if (vec->is_pfns)  in frame_vector_to_pfns()
187 	pages = (struct page **)(vec->ptrs);  in frame_vector_to_pfns()
189 	for (i = 0; i < vec->nr_frames; i++)  in frame_vector_to_pfns()
191 	vec->is_pfns = true;  in frame_vector_to_pfns()
204 	struct frame_vector *vec;  in frame_vector_create()  local
219 	vec = kvmalloc(size, GFP_KERNEL);  in frame_vector_create()
220 	if (!vec)  in frame_vector_create()
222 	vec->nr_allocated = nr_frames;  in frame_vector_create()
223 	vec->nr_frames = 0;  in frame_vector_create()
224 	return vec;  in frame_vector_create()
230  * @vec:	Frame vector to free
234 void frame_vector_destroy(struct frame_vector *vec)  in frame_vector_destroy()  argument
237 	VM_BUG_ON(vec->nr_frames > 0);  in frame_vector_destroy()
238 	kvfree(vec);  in frame_vector_destroy()