Ocfs2/move_extents: Adding new ioctl code 'OCFS2_IOC_MOVE_EXT' to ocfs2.

Patch also manages to add a manipulative struture for this ioctl. Signed-off-by: Tristan Ye <tristan.ye@oracle.com>

Ocfs2/move_extents: Adding new ioctl code 'OCFS2_IOC_MOVE_EXT' to ocfs2.
Patch also manages to add a manipulative struture for this ioctl. Signed-off-by: Tristan Ye <tristan.ye@oracle.com>
Tristan Ye
1 parent 3e19a25e05
Showing 1 changed file with 34 additions and 0 deletions Side-by-side Diff
fs/ocfs2/ocfs2_ioctl.h
@@ -205,5 +205,39 @@
  
 #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_threshold;	/* 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_PART_DEFRAG	(0x00000002)	/* Allow partial extent
+							   moving, is to make
+							   movement less likely
+							   to fail, may make fs
+							   even more fragmented */
+#define OCFS2_MOVE_EXT_FL_COMPLETE	(0x00000004)	/* Move or defragmenation
+							   completely gets done.
+							 */
+
+#define OCFS2_IOC_MOVE_EXT	_IOW('o', 6, struct ocfs2_move_extents)
+
 #endif /* OCFS2_IOCTL_H */
...	...	@@ -205,5 +205,39 @@
205	205
206	206	#define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info)
207	207
	208	+struct ocfs2_move_extents {
	209	+/* All values are in bytes */
	210	+ /* in */
	211	+ __u64 me_start; /* Virtual start in the file to move */
	212	+ __u64 me_len; /* Length of the extents to be moved */
	213	+ __u64 me_goal; /* Physical offset of the goal,
	214	+ it's in block unit */
	215	+ __u64 me_threshold; /* Maximum distance from goal or threshold
	216	+ for auto defragmentation */
	217	+ __u64 me_flags; /* Flags for the operation:
	218	+ * - auto defragmentation.
	219	+ * - refcount,xattr cases.
	220	+ */
	221	+ /* out */
	222	+ __u64 me_moved_len; /* Moved/defraged length */
	223	+ __u64 me_new_offset; /* Resulting physical location */
	224	+ __u32 me_reserved[2]; /* Reserved for futhure */
	225	+};
	226	+
	227	+#define OCFS2_MOVE_EXT_FL_AUTO_DEFRAG (0x00000001) /* Kernel manages to
	228	+ claim new clusters
	229	+ as the goal place
	230	+ for extents moving */
	231	+#define OCFS2_MOVE_EXT_FL_PART_DEFRAG (0x00000002) /* Allow partial extent
	232	+ moving, is to make
	233	+ movement less likely
	234	+ to fail, may make fs
	235	+ even more fragmented */
	236	+#define OCFS2_MOVE_EXT_FL_COMPLETE (0x00000004) /* Move or defragmenation
	237	+ completely gets done.
	238	+ */
	239	+
	240	+#define OCFS2_IOC_MOVE_EXT _IOW('o', 6, struct ocfs2_move_extents)
	241	+
208	242	#endif /* OCFS2_IOCTL_H */