• Darrick J. Wong's avatar
    ocfs2: implement the VFS clone_range, copy_range, and dedupe_range features · 29ac8e85
    Darrick J. Wong authored
    Connect the new VFS clone_range, copy_range, and dedupe_range features
    to the existing reflink capability of ocfs2.  Compared to the existing
    ocfs2 reflink ioctl We have to do things a little differently to support
    the VFS semantics (we can clone subranges of a file but we don't clone
    xattrs), but the VFS ioctls are more broadly supported.
    Signed-off-by: 's avatarDarrick J. Wong <darrick.wong@oracle.com>
    ---
    v2: Convert inline data files to extents files before reflinking,
    and fix i_blocks so that stat(2) output is correct.
    v3: Make zero-length dedupe consistent with btrfs behavior.
    v4: Use VFS double-inode lock routines and remove MAX_DEDUPE_LEN.
    29ac8e85