tree 6b906eb22fef78636c7d4db7120370d7715f5aef
parent ee16cc037e255801892481a2d0b7c1fff2adf1aa
author Tristan Ye <tristan.ye@oracle.com> 1306304623 +0800
committer Tristan Ye <tristan.ye@oracle.com> 1306307832 +0800

Ocfs2/move_extents: move/defrag extents within a certain range.

the basic logic of moving extents for a file is pretty like punching-hole
sequence, walk the extents within the range as user specified, calculating
an appropriate len to defrag/move, then let ocfs2_defrag/move_extent() to
do the actual moving.

This func ends up setting 'OCFS2_MOVE_EXT_FL_COMPLETE' to userpace if operation
gets done successfully.

Signed-off-by: Tristan Ye <tristan.ye@oracle.com>