ocfs2: Support xfs style space reservation ioctls

[linux-2.6-omap-h63xx.git] / fs / ocfs2 / ocfs2_fs.h

diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index c20a74b99d87da366cbd3f267a5d5ff3b3878aa8..82f8a75b207e4b015a65bb3de1acbc0a4a41502e 100644 (file)
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -174,6 +174,32 @@
 #define OCFS2_IOC32_GETFLAGS   _IOR('f', 1, int)
 #define OCFS2_IOC32_SETFLAGS   _IOW('f', 2, int)
 
+/*
+ * Space reservation / allocation / free ioctls and argument structure
+ * are designed to be compatible with XFS.
+ *
+ * ALLOCSP* and FREESP* are not and will never be supported, but are
+ * included here for completeness.
+ */
+struct ocfs2_space_resv {
+       __s16           l_type;
+       __s16           l_whence;
+       __s64           l_start;
+       __s64           l_len;          /* len == 0 means until end of file */
+       __s32           l_sysid;
+       __u32           l_pid;
+       __s32           l_pad[4];       /* reserve area                     */
+};
+
+#define OCFS2_IOC_ALLOCSP              _IOW ('X', 10, struct ocfs2_space_resv)
+#define OCFS2_IOC_FREESP               _IOW ('X', 11, struct ocfs2_space_resv)
+#define OCFS2_IOC_RESVSP               _IOW ('X', 40, struct ocfs2_space_resv)
+#define OCFS2_IOC_UNRESVSP     _IOW ('X', 41, struct ocfs2_space_resv)
+#define OCFS2_IOC_ALLOCSP64    _IOW ('X', 36, struct ocfs2_space_resv)
+#define OCFS2_IOC_FREESP64     _IOW ('X', 37, struct ocfs2_space_resv)
+#define OCFS2_IOC_RESVSP64     _IOW ('X', 42, struct ocfs2_space_resv)
+#define OCFS2_IOC_UNRESVSP64   _IOW ('X', 43, struct ocfs2_space_resv)
+
 /*
  * Journal Flags (ocfs2_dinode.id1.journal1.i_flags)
  */