Quelle  rebalance_format.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_REBALANCE_FORMAT_H
#define _BCACHEFS_REBALANCE_FORMAT_H

struct bch_extent_rebalance {
#if defined(__LITTLE_ENDIAN_BITFIELD)
 __u64   type:6,
    unused:3,

    promote_target_from_inode:1,
    erasure_code_from_inode:1,
    data_checksum_from_inode:1,
    background_compression_from_inode:1,
    data_replicas_from_inode:1,
    background_target_from_inode:1,

    promote_target:16,
    erasure_code:1,
    data_checksum:4,
    data_replicas:4,
    background_compression:8, /* enum bch_compression_opt */
    background_target:16;
#elif defined (__BIG_ENDIAN_BITFIELD)
 __u64   background_target:16,
    background_compression:8,
    data_replicas:4,
    data_checksum:4,
    erasure_code:1,
    promote_target:16,

    background_target_from_inode:1,
    data_replicas_from_inode:1,
    background_compression_from_inode:1,
    data_checksum_from_inode:1,
    erasure_code_from_inode:1,
    promote_target_from_inode:1,

    unused:3,
    type:6;
#endif
};

/* subset of BCH_INODE_OPTS */
#define BCH_REBALANCE_OPTS()   \
 x(data_checksum)   \
 x(background_compression)  \
 x(data_replicas)   \
 x(promote_target)   \
 x(background_target)   \
 x(erasure_code)

#endif /* _BCACHEFS_REBALANCE_FORMAT_H */