[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/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 5eb392d..7ebbfa0 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -230,7 +230,7 @@
 
 	vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
 
-	if (vp->v_vfsp->vfs_flag & VFS_RDONLY)
+	if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)
 		return XFS_ERROR(EROFS);
 
 	/*
@@ -1515,7 +1515,7 @@
 		return 0;
 
 	/* If this is a read-only mount, don't do this (would generate I/O) */
-	if (vp->v_vfsp->vfs_flag & VFS_RDONLY)
+	if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)
 		return 0;
 
 	if (!XFS_FORCED_SHUTDOWN(mp)) {
@@ -1621,7 +1621,7 @@
 	error = 0;
 
 	/* If this is a read-only mount, don't do this (would generate I/O) */
-	if (vp->v_vfsp->vfs_flag & VFS_RDONLY)
+	if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)
 		goto out;
 
 	if (ip->i_d.di_nlink != 0) {