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    Btrfs: mark delayed refs as for cow · 66d7e7f0
    Arne Jansen 提交于
    Add a for_cow parameter to add_delayed_*_ref and pass the appropriate value
    from every call site. The for_cow parameter will later on be used to
    determine if a ref will change anything with respect to qgroups.
    
    Delayed refs coming from relocation are always counted as for_cow, as they
    don't change subvol quota.
    
    Also pass in the fs_info for later use.
    
    btrfs_find_all_roots() will use this as an optimization, as changes that are
    for_cow will not change anything with respect to which root points to a
    certain leaf. Thus, we don't need to add the current sequence number to
    those delayed refs.
    Signed-off-by: NArne Jansen <sensille@gmx.net>
    Signed-off-by: NJan Schmidt <list.btrfs@jan-o-sch.net>
    66d7e7f0
ctree.c 111.0 KB