[XFS] kill v_vfsp member from struct bhv_vnode

We can easily get at the vfsp through the super_block but it will soon be
gone anyway.

SGI-PV: 969608
SGI-Modid: xfs-linux-melb:xfs-kern:29494a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index 8370770..1d72dbb 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -261,7 +261,7 @@
 	vma->vm_flags |= VM_CAN_NONLINEAR;
 
 #ifdef CONFIG_XFS_DMAPI
-	if (vn_from_inode(filp->f_path.dentry->d_inode)->v_vfsp->vfs_flag & VFS_DMI)
+	if (vfs_from_sb(filp->f_path.dentry->d_inode->i_sb)->vfs_flag & VFS_DMI)
 		vma->vm_ops = &xfs_dmapi_file_vm_ops;
 #endif /* CONFIG_XFS_DMAPI */
 
@@ -320,16 +320,14 @@
 	struct vm_area_struct *vma,
 	unsigned int	newflags)
 {
-	bhv_vnode_t	*vp = vn_from_inode(vma->vm_file->f_path.dentry->d_inode);
+	struct inode	*inode = vma->vm_file->f_path.dentry->d_inode;
+	bhv_vfs_t	*vfsp = vfs_from_sb(inode->i_sb);
 	int		error = 0;
 
-	if (vp->v_vfsp->vfs_flag & VFS_DMI) {
+	if (vfsp->vfs_flag & VFS_DMI) {
 		if ((vma->vm_flags & VM_MAYSHARE) &&
-		    (newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE)) {
-			xfs_mount_t	*mp = XFS_VFSTOM(vp->v_vfsp);
-
-			error = XFS_SEND_MMAP(mp, vma, VM_WRITE);
-		    }
+		    (newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE))
+			error = XFS_SEND_MMAP(XFS_VFSTOM(vfsp), vma, VM_WRITE);
 	}
 	return error;
 }
@@ -346,18 +344,17 @@
 xfs_file_open_exec(
 	struct inode	*inode)
 {
-	bhv_vnode_t	*vp = vn_from_inode(inode);
+	bhv_vfs_t	*vfsp = vfs_from_sb(inode->i_sb);
 
-	if (unlikely(vp->v_vfsp->vfs_flag & VFS_DMI)) {
-		xfs_mount_t	*mp = XFS_VFSTOM(vp->v_vfsp);
-		xfs_inode_t	*ip = xfs_vtoi(vp);
+	if (unlikely(vfsp->vfs_flag & VFS_DMI)) {
+		if (DM_EVENT_ENABLED(XFS_I(inode), DM_EVENT_READ)) {
+			bhv_vnode_t *vp = vn_from_inode(inode);
 
-		if (!ip)
-			return -EINVAL;
-		if (DM_EVENT_ENABLED(ip, DM_EVENT_READ))
-			return -XFS_SEND_DATA(mp, DM_EVENT_READ, vp,
-					       0, 0, 0, NULL);
+			return -XFS_SEND_DATA(XFS_VFSTOM(vfsp), DM_EVENT_READ,
+						vp, 0, 0, 0, NULL);
+		}
 	}
+
 	return 0;
 }
 #endif /* HAVE_FOP_OPEN_EXEC */