84 	struct squashfs_xz *stream;  in squashfs_xz_init()  local
87 	stream = kmalloc(sizeof(*stream), GFP_KERNEL);  in squashfs_xz_init()
88 	if (stream == NULL) {  in squashfs_xz_init()
93 	stream->state = xz_dec_init(XZ_PREALLOC, comp_opts->dict_size);  in squashfs_xz_init()
94 	if (stream->state == NULL) {  in squashfs_xz_init()
95 		kfree(stream);  in squashfs_xz_init()
100 	return stream;  in squashfs_xz_init()
110 	struct squashfs_xz *stream = strm;  in squashfs_xz_free()  local
112 	if (stream) {  in squashfs_xz_free()
113 		xz_dec_end(stream->state);  in squashfs_xz_free()
114 		kfree(stream);  in squashfs_xz_free()
126 	struct squashfs_xz *stream = strm;  in squashfs_xz_uncompress()  local
128 	xz_dec_reset(stream->state);  in squashfs_xz_uncompress()
129 	stream->buf.in_pos = 0;  in squashfs_xz_uncompress()
130 	stream->buf.in_size = 0;  in squashfs_xz_uncompress()
131 	stream->buf.out_pos = 0;  in squashfs_xz_uncompress()
132 	stream->buf.out_size = PAGE_SIZE;  in squashfs_xz_uncompress()
133 	stream->buf.out = squashfs_first_page(output);  in squashfs_xz_uncompress()
134 	if (IS_ERR(stream->buf.out)) {  in squashfs_xz_uncompress()
135 		error = PTR_ERR(stream->buf.out);  in squashfs_xz_uncompress()
142 		if (stream->buf.in_pos == stream->buf.in_size) {  in squashfs_xz_uncompress()
155 			stream->buf.in = data + offset;  in squashfs_xz_uncompress()
156 			stream->buf.in_size = avail;  in squashfs_xz_uncompress()
157 			stream->buf.in_pos = 0;  in squashfs_xz_uncompress()
161 		if (stream->buf.out_pos == stream->buf.out_size) {  in squashfs_xz_uncompress()
162 			stream->buf.out = squashfs_next_page(output);  in squashfs_xz_uncompress()
163 			if (IS_ERR(stream->buf.out)) {  in squashfs_xz_uncompress()
164 				error = PTR_ERR(stream->buf.out);  in squashfs_xz_uncompress()
166 			} else if (stream->buf.out != NULL) {  in squashfs_xz_uncompress()
167 				stream->buf.out_pos = 0;  in squashfs_xz_uncompress()
172 		xz_err = xz_dec_run(stream->state, &stream->buf);  in squashfs_xz_uncompress()
184 	return error ? error : total + stream->buf.out_pos;  in squashfs_xz_uncompress()