[XFS] Use xfs_statfs type to statfs operation, to support multiple kernels more easily.

SGI Modid: 2.5.x-xfs:slinx:162331a

fs/xfs/linux/xfs_vfs.c

@@ -134,7 +134,7 @@ vfs_root(
 int
 vfs_statvfs(
 	struct bhv_desc		*bdp,
-	struct kstatfs		*sp,
+	xfs_statfs_t		*sp,
 	struct vnode		*vp)
 {
 	struct bhv_desc		*next = bdp;

fs/xfs/linux/xfs_vfs.h

@@ -42,6 +42,8 @@ struct seq_file;
 struct super_block;
 struct xfs_mount_args;
 
+typedef struct kstatfs xfs_statfs_t;
+
 typedef struct vfs {
 	u_int			vfs_flag;	/* flags */
 	fsid_t			vfs_fsid;	/* file system ID */
@@ -101,7 +103,7 @@ typedef int	(*vfs_unmount_t)(bhv_desc_t *, int, struct cred *);
 typedef int	(*vfs_mntupdate_t)(bhv_desc_t *, int *,
 				struct xfs_mount_args *);
 typedef int	(*vfs_root_t)(bhv_desc_t *, struct vnode **);
-typedef int	(*vfs_statvfs_t)(bhv_desc_t *, struct kstatfs *, struct vnode *);
+typedef int	(*vfs_statvfs_t)(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
 typedef int	(*vfs_sync_t)(bhv_desc_t *, int, struct cred *);
 typedef int	(*vfs_vget_t)(bhv_desc_t *, struct vnode **, struct fid *);
 typedef int	(*vfs_dmapiops_t)(bhv_desc_t *, caddr_t);
@@ -168,7 +170,7 @@ extern int vfs_showargs(bhv_desc_t *, struct seq_file *);
 extern int vfs_unmount(bhv_desc_t *, int, struct cred *);
 extern int vfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
 extern int vfs_root(bhv_desc_t *, struct vnode **);
-extern int vfs_statvfs(bhv_desc_t *, struct kstatfs *, struct vnode *);
+extern int vfs_statvfs(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
 extern int vfs_sync(bhv_desc_t *, int, struct cred *);
 extern int vfs_vget(bhv_desc_t *, struct vnode **, struct fid *);
 extern int vfs_dmapiops(bhv_desc_t *, caddr_t);

fs/xfs/xfs_vfsops.c

@@ -743,7 +743,7 @@ xfs_root(
 STATIC int
 xfs_statvfs(
 	bhv_desc_t	*bdp,
-	struct kstatfs	*statp,
+	xfs_statfs_t	*statp,
 	vnode_t		*vp)
 {
 	__uint64_t	fakeinos;