• Qu Wenruo's avatar
    btrfs: rename BTRFS_ROOT_REF_COWS to BTRFS_ROOT_SHAREABLE · 92a7cc42
    Qu Wenruo authored
    The name BTRFS_ROOT_REF_COWS is not very clear about the meaning.
    
    In fact, that bit can only be set to those trees:
    
    - Subvolume roots
    - Data reloc root
    - Reloc roots for above roots
    
    All other trees won't get this bit set.  So just by the result, it is
    obvious that, roots with this bit set can have tree blocks shared with
    other trees.  Either shared by snapshots, or by reloc roots (an special
    snapshot created by relocation).
    
    This patch will rename BTRFS_ROOT_REF_COWS to BTRFS_ROOT_SHAREABLE to
    make it easier to understand, and update all comment mentioning
    "reference counted" to follow the rename.
    Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
    Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
    Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
    92a7cc42
extent-tree.c 155 KB