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()
125 	struct squashfs_xz *stream = strm;  in squashfs_xz_uncompress()  local
127 	xz_dec_reset(stream->state);  in squashfs_xz_uncompress()
128 	stream->buf.in_pos = 0;  in squashfs_xz_uncompress()
129 	stream->buf.in_size = 0;  in squashfs_xz_uncompress()
130 	stream->buf.out_pos = 0;  in squashfs_xz_uncompress()
131 	stream->buf.out_size = PAGE_SIZE;  in squashfs_xz_uncompress()
132 	stream->buf.out = squashfs_first_page(output);  in squashfs_xz_uncompress()
135 		if (stream->buf.in_pos == stream->buf.in_size && k < b) {  in squashfs_xz_uncompress()
138 			stream->buf.in = bh[k]->b_data + offset;  in squashfs_xz_uncompress()
139 			stream->buf.in_size = avail;  in squashfs_xz_uncompress()
140 			stream->buf.in_pos = 0;  in squashfs_xz_uncompress()
144 		if (stream->buf.out_pos == stream->buf.out_size) {  in squashfs_xz_uncompress()
145 			stream->buf.out = squashfs_next_page(output);  in squashfs_xz_uncompress()
146 			if (stream->buf.out != NULL) {  in squashfs_xz_uncompress()
147 				stream->buf.out_pos = 0;  in squashfs_xz_uncompress()
152 		xz_err = xz_dec_run(stream->state, &stream->buf);  in squashfs_xz_uncompress()
154 		if (stream->buf.in_pos == stream->buf.in_size && k < b)  in squashfs_xz_uncompress()
163 	return total + stream->buf.out_pos;  in squashfs_xz_uncompress()