Patch also manages to add a manipulative struture for this ioctl.
Signed-off-by: Tristan Ye <[email protected]>
---
fs/ocfs2/ocfs2_ioctl.h | 29 +++++++++++++++++++++++++++++
1 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/fs/ocfs2/ocfs2_ioctl.h b/fs/ocfs2/ocfs2_ioctl.h
index b46f39b..f2be820 100644
--- a/fs/ocfs2/ocfs2_ioctl.h
+++ b/fs/ocfs2/ocfs2_ioctl.h
@@ -171,4 +171,33 @@ enum ocfs2_info_type {
#define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info)
+struct ocfs2_move_extents {
+/* All values are in bytes */
+ /* in */
+ __u64 me_start; /* Virtual start in the file to move */
+ __u64 me_len; /* Length of the extents to be moved */
+ __u64 me_goal; /* Physical offset of the goal,
+ it's in block unit */
+ __u64 me_thresh; /* Maximum distance from goal or threshold
+ for auto defragmentation */
+ __u64 me_flags; /* Flags for the operation:
+ * - auto defragmentation.
+ * - refcount,xattr cases.
+ */
+ /* out */
+ __u64 me_moved_len; /* Moved/defraged length */
+ __u64 me_new_offset; /* Resulting physical location */
+ __u32 me_reserved[2]; /* Reserved for futhure */
+};
+
+#define OCFS2_MOVE_EXT_FL_AUTO_DEFRAG (0x00000001) /* Kernel manages to
+ claim new clusters
+ as the goal place
+ for extents moving */
+#define OCFS2_MOVE_EXT_FL_COMPLETE (0x00000002) /* Move or
defragmenation
+ completely gets done.
+ */
+
+#define OCFS2_IOC_MOVE_EXT _IOW('o', 6, struct ocfs2_move_extents)
+
#endif /* OCFS2_IOCTL_H */
--
1.5.5
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