31 static int compress_open(BlockDriverState *bs, QDict *options, int flags,  in compress_open()  argument
34     int ret = bdrv_open_file_child(NULL, options, "file", bs, errp);  in compress_open()
41     if (!bs->file->bs->drv || !block_driver_can_compress(bs->file->bs->drv)) {  in compress_open()
44                    bdrv_get_format_name(bs->file->bs) ?: "(no format)");  in compress_open()
49     bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |  in compress_open()
50         (BDRV_REQ_FUA & bs->file->bs->supported_write_flags);  in compress_open()
52     bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |  in compress_open()
54             bs->file->bs->supported_zero_flags);  in compress_open()
61 compress_co_getlength(BlockDriverState *bs)  in compress_co_getlength()  argument
63     return bdrv_co_getlength(bs->file->bs);  in compress_co_getlength()
68 compress_co_preadv_part(BlockDriverState *bs, int64_t offset, int64_t bytes,  in compress_co_preadv_part()  argument
72     return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,  in compress_co_preadv_part()
78 compress_co_pwritev_part(BlockDriverState *bs, int64_t offset, int64_t bytes,  in compress_co_pwritev_part()  argument
82     return bdrv_co_pwritev_part(bs->file, offset, bytes, qiov, qiov_offset,  in compress_co_pwritev_part()
88 compress_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes,  in compress_co_pwrite_zeroes()  argument
91     return bdrv_co_pwrite_zeroes(bs->file, offset, bytes, flags);  in compress_co_pwrite_zeroes()
96 compress_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes)  in compress_co_pdiscard()  argument
98     return bdrv_co_pdiscard(bs->file, offset, bytes);  in compress_co_pdiscard()
103 compress_refresh_limits(BlockDriverState *bs, Error **errp)  in compress_refresh_limits()  argument
108     if (!bs->file) {  in compress_refresh_limits()
112     ret = bdrv_get_info(bs->file->bs, &bdi);  in compress_refresh_limits()
117     bs->bl.request_alignment = bdi.cluster_size;  in compress_refresh_limits()
122 compress_co_eject(BlockDriverState *bs, bool eject_flag)  in compress_co_eject()  argument
124     bdrv_co_eject(bs->file->bs, eject_flag);  in compress_co_eject()
129 compress_co_lock_medium(BlockDriverState *bs, bool locked)  in compress_co_lock_medium()  argument
131     bdrv_co_lock_medium(bs->file->bs, locked);  in compress_co_lock_medium()