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authorTristan Ye <tristan.ye@oracle.com>2011-05-25 14:23:43 +0800
committerTristan Ye <tristan.ye@oracle.com>2011-05-25 15:17:12 +0800
commit53069d4e76954e2e63c1b3c501051c6fbcf7298c (patch)
tree6b906eb22fef78636c7d4db7120370d7715f5aef /fs/ocfs2/move_extents.h
parentee16cc037e255801892481a2d0b7c1fff2adf1aa (diff)
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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>
Diffstat (limited to 'fs/ocfs2/move_extents.h')
-rw-r--r--fs/ocfs2/move_extents.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ocfs2/move_extents.h b/fs/ocfs2/move_extents.h
index 27570f7f690..4e143e81144 100644
--- a/fs/ocfs2/move_extents.h
+++ b/fs/ocfs2/move_extents.h
@@ -17,4 +17,6 @@
#ifndef OCFS2_MOVE_EXTENTS_H
#define OCFS2_MOVE_EXTENTS_H
+int ocfs2_ioctl_move_extents(struct file *filp, void __user *argp);
+
#endif /* OCFS2_MOVE_EXTENTS_H */