24 	z_stream strm;  member
34 	kvfree(workspace->strm.workspace);  in zlib_free_workspace()
50 	workspace->strm.workspace = kvmalloc(workspacesize, GFP_KERNEL);  in zlib_alloc_workspace()
52 	if (!workspace->strm.workspace || !workspace->buf)  in zlib_alloc_workspace()
87 	if (Z_OK != zlib_deflateInit(&workspace->strm, workspace->level)) {  in zlib_compress_pages()
93 	workspace->strm.total_in = 0;  in zlib_compress_pages()
94 	workspace->strm.total_out = 0;  in zlib_compress_pages()
108 	workspace->strm.next_in = data_in;  in zlib_compress_pages()
109 	workspace->strm.next_out = cpage_out;  in zlib_compress_pages()
110 	workspace->strm.avail_out = PAGE_SIZE;  in zlib_compress_pages()
111 	workspace->strm.avail_in = min(len, PAGE_SIZE);  in zlib_compress_pages()
113 	while (workspace->strm.total_in < len) {  in zlib_compress_pages()
114 		ret = zlib_deflate(&workspace->strm, Z_SYNC_FLUSH);  in zlib_compress_pages()
118 			zlib_deflateEnd(&workspace->strm);  in zlib_compress_pages()
124 		if (workspace->strm.total_in > 8192 &&  in zlib_compress_pages()
125 		    workspace->strm.total_in <  in zlib_compress_pages()
126 		    workspace->strm.total_out) {  in zlib_compress_pages()
134 		if (workspace->strm.avail_out == 0) {  in zlib_compress_pages()
149 			workspace->strm.avail_out = PAGE_SIZE;  in zlib_compress_pages()
150 			workspace->strm.next_out = cpage_out;  in zlib_compress_pages()
153 		if (workspace->strm.total_in >= len)  in zlib_compress_pages()
157 		if (workspace->strm.avail_in == 0) {  in zlib_compress_pages()
158 			if (workspace->strm.total_out > max_out)  in zlib_compress_pages()
161 			bytes_left = len - workspace->strm.total_in;  in zlib_compress_pages()
169 			workspace->strm.avail_in = min(bytes_left,  in zlib_compress_pages()
171 			workspace->strm.next_in = data_in;  in zlib_compress_pages()
174 	workspace->strm.avail_in = 0;  in zlib_compress_pages()
175 	ret = zlib_deflate(&workspace->strm, Z_FINISH);  in zlib_compress_pages()
176 	zlib_deflateEnd(&workspace->strm);  in zlib_compress_pages()
183 	if (workspace->strm.total_out >= workspace->strm.total_in) {  in zlib_compress_pages()
189 	*total_out = workspace->strm.total_out;  in zlib_compress_pages()
190 	*total_in = workspace->strm.total_in;  in zlib_compress_pages()
219 	workspace->strm.next_in = data_in;  in zlib_decompress_bio()
220 	workspace->strm.avail_in = min_t(size_t, srclen, PAGE_SIZE);  in zlib_decompress_bio()
221 	workspace->strm.total_in = 0;  in zlib_decompress_bio()
223 	workspace->strm.total_out = 0;  in zlib_decompress_bio()
224 	workspace->strm.next_out = workspace->buf;  in zlib_decompress_bio()
225 	workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress_bio()
234 		workspace->strm.next_in += 2;  in zlib_decompress_bio()
235 		workspace->strm.avail_in -= 2;  in zlib_decompress_bio()
238 	if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {  in zlib_decompress_bio()
243 	while (workspace->strm.total_in < srclen) {  in zlib_decompress_bio()
244 		ret = zlib_inflate(&workspace->strm, Z_NO_FLUSH);  in zlib_decompress_bio()
249 		total_out = workspace->strm.total_out;  in zlib_decompress_bio()
263 		workspace->strm.next_out = workspace->buf;  in zlib_decompress_bio()
264 		workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress_bio()
266 		if (workspace->strm.avail_in == 0) {  in zlib_decompress_bio()
275 			workspace->strm.next_in = data_in;  in zlib_decompress_bio()
276 			tmp = srclen - workspace->strm.total_in;  in zlib_decompress_bio()
277 			workspace->strm.avail_in = min(tmp,  in zlib_decompress_bio()
286 	zlib_inflateEnd(&workspace->strm);  in zlib_decompress_bio()
310 	workspace->strm.next_in = data_in;  in zlib_decompress()
311 	workspace->strm.avail_in = srclen;  in zlib_decompress()
312 	workspace->strm.total_in = 0;  in zlib_decompress()
314 	workspace->strm.next_out = workspace->buf;  in zlib_decompress()
315 	workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress()
316 	workspace->strm.total_out = 0;  in zlib_decompress()
324 		workspace->strm.next_in += 2;  in zlib_decompress()
325 		workspace->strm.avail_in -= 2;  in zlib_decompress()
328 	if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {  in zlib_decompress()
338 		ret = zlib_inflate(&workspace->strm, Z_NO_FLUSH);  in zlib_decompress()
343 		total_out = workspace->strm.total_out;  in zlib_decompress()
369 		workspace->strm.next_out = workspace->buf;  in zlib_decompress()
370 		workspace->strm.avail_out = PAGE_SIZE;  in zlib_decompress()
378 	zlib_inflateEnd(&workspace->strm);  in zlib_decompress()