24 	z_stream strm;  member
61 	kvfree(workspace->strm.workspace);  in zlib_free_workspace()
77 	workspace->strm.workspace = kvmalloc(workspacesize, GFP_KERNEL);  in zlib_alloc_workspace()
80 	if (!workspace->strm.workspace || !workspace->buf)  in zlib_alloc_workspace()
115 	if (Z_OK != zlib_deflateInit(&workspace->strm, workspace->level)) {  in zlib_compress_pages()
121 	workspace->strm.total_in = 0;  in zlib_compress_pages()
122 	workspace->strm.total_out = 0;  in zlib_compress_pages()
136 	workspace->strm.next_in = data_in;  in zlib_compress_pages()
137 	workspace->strm.next_out = cpage_out;  in zlib_compress_pages()
138 	workspace->strm.avail_out = PAGE_SIZE;  in zlib_compress_pages()
139 	workspace->strm.avail_in = min(len, PAGE_SIZE);  in zlib_compress_pages()
141 	while (workspace->strm.total_in < len) {  in zlib_compress_pages()
142 		ret = zlib_deflate(&workspace->strm, Z_SYNC_FLUSH);  in zlib_compress_pages()
146 			zlib_deflateEnd(&workspace->strm);  in zlib_compress_pages()
152 		if (workspace->strm.total_in > 8192 &&  in zlib_compress_pages()
153 		    workspace->strm.total_in <  in zlib_compress_pages()
154 		    workspace->strm.total_out) {  in zlib_compress_pages()
162 		if (workspace->strm.avail_out == 0) {  in zlib_compress_pages()
177 			workspace->strm.avail_out = PAGE_SIZE;  in zlib_compress_pages()
178 			workspace->strm.next_out = cpage_out;  in zlib_compress_pages()
181 		if (workspace->strm.total_in >= len)  in zlib_compress_pages()
185 		if (workspace->strm.avail_in == 0) {  in zlib_compress_pages()
186 			if (workspace->strm.total_out > max_out)  in zlib_compress_pages()
189 			bytes_left = len - workspace->strm.total_in;  in zlib_compress_pages()
197 			workspace->strm.avail_in = min(bytes_left,  in zlib_compress_pages()
199 			workspace->strm.next_in = data_in;  in zlib_compress_pages()
202 	workspace->strm.avail_in = 0;  in zlib_compress_pages()
203 	ret = zlib_deflate(&workspace->strm, Z_FINISH);  in zlib_compress_pages()
204 	zlib_deflateEnd(&workspace->strm);  in zlib_compress_pages()
211 	if (workspace->strm.total_out >= workspace->strm.total_in) {  in zlib_compress_pages()
217 	*total_out = workspace->strm.total_out;  in zlib_compress_pages()
218 	*total_in = workspace->strm.total_in;  in zlib_compress_pages()
247 	workspace->strm.next_in = data_in;  in zlib_decompress_bio()
248 	workspace->strm.avail_in = min_t(size_t, srclen, PAGE_SIZE);  in zlib_decompress_bio()
249 	workspace->strm.total_in = 0;  in zlib_decompress_bio()
251 	workspace->strm.total_out = 0;  in zlib_decompress_bio()
252 	workspace->strm.next_out = workspace->buf;  in zlib_decompress_bio()
253 	workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress_bio()
262 		workspace->strm.next_in += 2;  in zlib_decompress_bio()
263 		workspace->strm.avail_in -= 2;  in zlib_decompress_bio()
266 	if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {  in zlib_decompress_bio()
271 	while (workspace->strm.total_in < srclen) {  in zlib_decompress_bio()
272 		ret = zlib_inflate(&workspace->strm, Z_NO_FLUSH);  in zlib_decompress_bio()
277 		total_out = workspace->strm.total_out;  in zlib_decompress_bio()
291 		workspace->strm.next_out = workspace->buf;  in zlib_decompress_bio()
292 		workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress_bio()
294 		if (workspace->strm.avail_in == 0) {  in zlib_decompress_bio()
303 			workspace->strm.next_in = data_in;  in zlib_decompress_bio()
304 			tmp = srclen - workspace->strm.total_in;  in zlib_decompress_bio()
305 			workspace->strm.avail_in = min(tmp,  in zlib_decompress_bio()
314 	zlib_inflateEnd(&workspace->strm);  in zlib_decompress_bio()
338 	workspace->strm.next_in = data_in;  in zlib_decompress()
339 	workspace->strm.avail_in = srclen;  in zlib_decompress()
340 	workspace->strm.total_in = 0;  in zlib_decompress()
342 	workspace->strm.next_out = workspace->buf;  in zlib_decompress()
343 	workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress()
344 	workspace->strm.total_out = 0;  in zlib_decompress()
352 		workspace->strm.next_in += 2;  in zlib_decompress()
353 		workspace->strm.avail_in -= 2;  in zlib_decompress()
356 	if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {  in zlib_decompress()
366 		ret = zlib_inflate(&workspace->strm, Z_NO_FLUSH);  in zlib_decompress()
371 		total_out = workspace->strm.total_out;  in zlib_decompress()
397 		workspace->strm.next_out = workspace->buf;  in zlib_decompress()
398 		workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress()
406 	zlib_inflateEnd(&workspace->strm);  in zlib_decompress()