[XFS] pass inode to xfs_ioc_space(), simplify some code. There is trivial

"inode => vnode => inode" conversion, but only flags and mode of final
inode are looked at. Pass original inode instead.

SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:26395a
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

fs/xfs/linux-2.6/xfs_ioctl.c

@@ -653,7 +653,7 @@ xfs_attrmulti_by_handle(
 STATIC int
 xfs_ioc_space(
 	bhv_desc_t		*bdp,
-	bhv_vnode_t		*vp,
+	struct inode		*inode,
 	struct file		*filp,
 	int			flags,
 	unsigned int		cmd,
@@ -735,7 +735,7 @@ xfs_ioctl(
 		    !capable(CAP_SYS_ADMIN))
 			return -EPERM;
 
-		return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg);
+		return xfs_ioc_space(bdp, inode, filp, ioflags, cmd, arg);
 
 	case XFS_IOC_DIOINFO: {
 		struct dioattr	da;
@@ -957,7 +957,7 @@ xfs_ioctl(
 STATIC int
 xfs_ioc_space(
 	bhv_desc_t		*bdp,
-	bhv_vnode_t		*vp,
+	struct inode		*inode,
 	struct file		*filp,
 	int			ioflags,
 	unsigned int		cmd,
@@ -967,13 +967,13 @@ xfs_ioc_space(
 	int			attr_flags = 0;
 	int			error;
 
-	if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND))
+	if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
 		return -XFS_ERROR(EPERM);
 
 	if (!(filp->f_mode & FMODE_WRITE))
 		return -XFS_ERROR(EBADF);
 
-	if (!VN_ISREG(vp))
+	if (!S_ISREG(inode->i_mode))
 		return -XFS_ERROR(EINVAL);
 
 	if (copy_from_user(&bf, arg, sizeof(bf)))