• Zheng Yan's avatar
    Btrfs: Full back reference support · 31840ae1
    Zheng Yan authored
    This patch makes the back reference system to explicit record the
    location of parent node for all types of extents. The location of
    parent node is placed into the offset field of backref key. Every
    time a tree block is balanced, the back references for the affected
    lower level extents are updated.
    Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>