27 	z_stream strm;  member
50 	kvfree(workspace->strm.workspace);  in zlib_free_workspace()
66 	workspace->strm.workspace = kvzalloc(workspacesize, GFP_KERNEL | __GFP_NOWARN);  in zlib_alloc_workspace()
83 	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()
133 	workspace->strm.next_in = workspace->buf;  in zlib_compress_pages()
134 	workspace->strm.avail_in = 0;  in zlib_compress_pages()
135 	workspace->strm.next_out = cpage_out;  in zlib_compress_pages()
136 	workspace->strm.avail_out = PAGE_SIZE;  in zlib_compress_pages()
138 	while (workspace->strm.total_in < len) {  in zlib_compress_pages()
143 		if (workspace->strm.avail_in == 0) {  in zlib_compress_pages()
144 			bytes_left = len - workspace->strm.total_in;  in zlib_compress_pages()
162 				workspace->strm.next_in = workspace->buf;  in zlib_compress_pages()
172 				workspace->strm.next_in = data_in;  in zlib_compress_pages()
174 			workspace->strm.avail_in = min(bytes_left,  in zlib_compress_pages()
178 		ret = zlib_deflate(&workspace->strm, Z_SYNC_FLUSH);  in zlib_compress_pages()
182 			zlib_deflateEnd(&workspace->strm);  in zlib_compress_pages()
188 		if (workspace->strm.total_in > 8192 &&  in zlib_compress_pages()
189 		    workspace->strm.total_in <  in zlib_compress_pages()
190 		    workspace->strm.total_out) {  in zlib_compress_pages()
198 		if (workspace->strm.avail_out == 0) {  in zlib_compress_pages()
211 			workspace->strm.avail_out = PAGE_SIZE;  in zlib_compress_pages()
212 			workspace->strm.next_out = cpage_out;  in zlib_compress_pages()
215 		if (workspace->strm.total_in >= len)  in zlib_compress_pages()
217 		if (workspace->strm.total_out > max_out)  in zlib_compress_pages()
220 	workspace->strm.avail_in = 0;  in zlib_compress_pages()
226 		ret = zlib_deflate(&workspace->strm, Z_FINISH);  in zlib_compress_pages()
230 			zlib_deflateEnd(&workspace->strm);  in zlib_compress_pages()
233 		} else if (workspace->strm.avail_out == 0) {  in zlib_compress_pages()
247 			workspace->strm.avail_out = PAGE_SIZE;  in zlib_compress_pages()
248 			workspace->strm.next_out = cpage_out;  in zlib_compress_pages()
251 	zlib_deflateEnd(&workspace->strm);  in zlib_compress_pages()
253 	if (workspace->strm.total_out >= workspace->strm.total_in) {  in zlib_compress_pages()
259 	*total_out = workspace->strm.total_out;  in zlib_compress_pages()
260 	*total_in = workspace->strm.total_in;  in zlib_compress_pages()
285 	workspace->strm.next_in = data_in;  in zlib_decompress_bio()
286 	workspace->strm.avail_in = min_t(size_t, srclen, PAGE_SIZE);  in zlib_decompress_bio()
287 	workspace->strm.total_in = 0;  in zlib_decompress_bio()
289 	workspace->strm.total_out = 0;  in zlib_decompress_bio()
290 	workspace->strm.next_out = workspace->buf;  in zlib_decompress_bio()
291 	workspace->strm.avail_out = workspace->buf_size;  in zlib_decompress_bio()
300 		workspace->strm.next_in += 2;  in zlib_decompress_bio()
301 		workspace->strm.avail_in -= 2;  in zlib_decompress_bio()
304 	if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {  in zlib_decompress_bio()
309 	while (workspace->strm.total_in < srclen) {  in zlib_decompress_bio()
310 		ret = zlib_inflate(&workspace->strm, Z_NO_FLUSH);  in zlib_decompress_bio()
315 		total_out = workspace->strm.total_out;  in zlib_decompress_bio()
328 		workspace->strm.next_out = workspace->buf;  in zlib_decompress_bio()
329 		workspace->strm.avail_out = workspace->buf_size;  in zlib_decompress_bio()
331 		if (workspace->strm.avail_in == 0) {  in zlib_decompress_bio()
340 			workspace->strm.next_in = data_in;  in zlib_decompress_bio()
341 			tmp = srclen - workspace->strm.total_in;  in zlib_decompress_bio()
342 			workspace->strm.avail_in = min(tmp, PAGE_SIZE);  in zlib_decompress_bio()
350 	zlib_inflateEnd(&workspace->strm);  in zlib_decompress_bio()
370 	workspace->strm.next_in = data_in;  in zlib_decompress()
371 	workspace->strm.avail_in = srclen;  in zlib_decompress()
372 	workspace->strm.total_in = 0;  in zlib_decompress()
374 	workspace->strm.next_out = workspace->buf;  in zlib_decompress()
375 	workspace->strm.avail_out = workspace->buf_size;  in zlib_decompress()
376 	workspace->strm.total_out = 0;  in zlib_decompress()
384 		workspace->strm.next_in += 2;  in zlib_decompress()
385 		workspace->strm.avail_in -= 2;  in zlib_decompress()
388 	if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {  in zlib_decompress()
398 		ret = zlib_inflate(&workspace->strm, Z_NO_FLUSH);  in zlib_decompress()
403 		total_out = workspace->strm.total_out;  in zlib_decompress()
428 		workspace->strm.next_out = workspace->buf;  in zlib_decompress()
429 		workspace->strm.avail_out = workspace->buf_size;  in zlib_decompress()
437 	zlib_inflateEnd(&workspace->strm);  in zlib_decompress()