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    ocfs2: Make ocfs2_extent_tree the first-class representation of a tree. · f99b9b7c
    Joel Becker 提交于
    We now have three different kinds of extent trees in ocfs2: inode data
    (dinode), extended attributes (xattr_tree), and extended attribute
    values (xattr_value).  There is a nice abstraction for them,
    ocfs2_extent_tree, but it is hidden in alloc.c.  All the calling
    functions have to pick amongst a varied API and pass in type bits and
    often extraneous pointers.
    
    A better way is to make ocfs2_extent_tree a first-class object.
    Everyone converts their object to an ocfs2_extent_tree() via the
    ocfs2_get_*_extent_tree() calls, then uses the ocfs2_extent_tree for all
    tree calls to alloc.c.
    
    This simplifies a lot of callers, making for readability.  It also
    provides an easy way to add additional extent tree types, as they only
    need to be defined in alloc.c with a ocfs2_get_<new>_extent_tree()
    function.
    Signed-off-by: NJoel Becker <joel.becker@oracle.com>
    Signed-off-by: NMark Fasheh <mfasheh@suse.com>
    f99b9b7c
aops.c 49.3 KB