111 int cryptodev_adjust_sg_array(struct csession *ses, int pagecount)  in cryptodev_adjust_sg_array()  argument
117 	for (array_size = ses->array_size; array_size < pagecount;  in cryptodev_adjust_sg_array()
121 			ses->array_size, array_size);  in cryptodev_adjust_sg_array()
122 	pages = krealloc(ses->pages, array_size * sizeof(struct page *),  in cryptodev_adjust_sg_array()
126 	ses->pages = pages;  in cryptodev_adjust_sg_array()
127 	sg = krealloc(ses->sg, array_size * sizeof(struct scatterlist),  in cryptodev_adjust_sg_array()
131 	ses->sg = sg;  in cryptodev_adjust_sg_array()
132 	ses->array_size = array_size;  in cryptodev_adjust_sg_array()
137 void cryptodev_release_user_pages(struct csession *ses)  in cryptodev_release_user_pages()  argument
141 	for (i = 0; i < ses->used_pages; i++) {  in cryptodev_release_user_pages()
142 		if (!PageReserved(ses->pages[i]))  in cryptodev_release_user_pages()
143 			SetPageDirty(ses->pages[i]);  in cryptodev_release_user_pages()
145 		if (ses->readonly_pages == 0)  in cryptodev_release_user_pages()
146 			flush_dcache_page(ses->pages[i]);  in cryptodev_release_user_pages()
148 			ses->readonly_pages--;  in cryptodev_release_user_pages()
150 		put_page(ses->pages[i]);  in cryptodev_release_user_pages()
152 	ses->used_pages = 0;  in cryptodev_release_user_pages()
158 int cryptodev_get_userbuf(struct csession *ses,  in cryptodev_get_userbuf()  argument
181 	ses->used_pages = (src == dst) ? max(src_pagecount, dst_pagecount)  in cryptodev_get_userbuf()
184 	ses->readonly_pages = (src == dst) ? 0 : src_pagecount;  in cryptodev_get_userbuf()
186 	if (ses->used_pages > ses->array_size) {  in cryptodev_get_userbuf()
187 		rc = cryptodev_adjust_sg_array(ses, ses->used_pages);  in cryptodev_get_userbuf()
197 		rc = __cryptodev_get_userbuf(src, src_len, 1, ses->used_pages,  in cryptodev_get_userbuf()
198 			               ses->pages, ses->sg, task, mm);  in cryptodev_get_userbuf()
203 		(*src_sg) = (*dst_sg) = ses->sg;  in cryptodev_get_userbuf()
211 		rc = __cryptodev_get_userbuf(src, src_len, 0, ses->readonly_pages,  in cryptodev_get_userbuf()
212 					   ses->pages, ses->sg, task, mm);  in cryptodev_get_userbuf()
217 		*src_sg = ses->sg;  in cryptodev_get_userbuf()
222 			ses->used_pages - ses->readonly_pages;  in cryptodev_get_userbuf()
223 		struct page **dst_pages = ses->pages + ses->readonly_pages;  in cryptodev_get_userbuf()
224 		*dst_sg = ses->sg + ses->readonly_pages;  in cryptodev_get_userbuf()
230 			cryptodev_release_user_pages(ses);  /* FIXME: use __release_userbuf(src, ...) */  in cryptodev_get_userbuf()