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    Btrfs: superblock duplication · a512bbf8
    Yan Zheng 提交于
    This patch implements superblock duplication. Superblocks
    are stored at offset 16K, 64M and 256G on every devices.
    Spaces used by superblocks are preserved by the allocator,
    which uses a reverse mapping function to find the logical
    addresses that correspond to superblocks. Thank you,
    Signed-off-by: NYan Zheng <zheng.yan@oracle.com>
    a512bbf8
transaction.c 29.7 KB