[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>

fs/xfs/linux-2.6/xfs_file.c

@@ -261,7 +261,7 @@ xfs_file_mmap(
 	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 @@ xfs_vm_mprotect(
 	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 @@ STATIC int
 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 */

fs/xfs/linux-2.6/xfs_ioctl.c

@@ -138,7 +138,8 @@ xfs_find_handle(
 	vp = vn_from_inode(inode);
 
 	/* now we can grab the fsid */
-	memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t));
+	memcpy(&handle.ha_fsid, XFS_MTOVFS(XFS_I(inode)->i_mount)->vfs_altfsid,
+			sizeof(xfs_fsid_t));
 	hsize = sizeof(xfs_fsid_t);
 
 	if (cmd != XFS_IOC_PATH_TO_FSHANDLE) {

fs/xfs/linux-2.6/xfs_lrw.c

@@ -621,7 +621,7 @@ xfs_write(
 	io = &xip->i_iocore;
 	mp = io->io_mount;
 
-	vfs_wait_for_freeze(vp->v_vfsp, SB_FREEZE_WRITE);
+	vfs_wait_for_freeze(XFS_MTOVFS(mp), SB_FREEZE_WRITE);
 
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return -EIO;

fs/xfs/linux-2.6/xfs_super.c

@@ -210,7 +210,6 @@ xfs_initialize_vnode(
 	struct inode		*inode = vn_to_inode(vp);
 
 	if (!ip->i_vnode) {
-		vp->v_vfsp = bhvtovfs(bdp);
 		ip->i_vnode = vp;
 		inode->i_private = ip;
 	}

fs/xfs/linux-2.6/xfs_vnode.c

@@ -69,8 +69,10 @@ vn_ioerror(
 	char		*f,
 	int		l)
 {
+	bhv_vfs_t	*vfsp = vfs_from_sb(vp->v_inode.i_sb);
+
 	if (unlikely(error == -ENODEV))
-		bhv_vfs_force_shutdown(vp->v_vfsp, SHUTDOWN_DEVICE_REQ, f, l);
+		bhv_vfs_force_shutdown(vfsp, SHUTDOWN_DEVICE_REQ, f, l);
 }
 
 bhv_vnode_t *

fs/xfs/linux-2.6/xfs_vnode.h

@@ -35,11 +35,10 @@ typedef enum bhv_vflags {
 
 /*
  * MP locking protocols:
- *	v_flag, v_vfsp				VN_LOCK/VN_UNLOCK
+ *	v_flag, 				VN_LOCK/VN_UNLOCK
  */
 typedef struct bhv_vnode {
 	bhv_vflags_t	v_flag;			/* vnode flags (see above) */
-	bhv_vfs_t	*v_vfsp;		/* ptr to containing VFS */
 	bhv_vnumber_t	v_number;		/* in-core vnode number */
 	spinlock_t	v_lock;			/* VN_LOCK/VN_UNLOCK */
 	atomic_t	v_iocount;		/* outstanding I/O count */

fs/xfs/xfs_acl.c

@@ -372,6 +372,7 @@ xfs_acl_allow_set(
 	bhv_vnode_t	*vp,
 	int		kind)
 {
+	xfs_inode_t	*ip = xfs_vtoi(vp);
 	bhv_vattr_t	va;
 	int		error;
 
@@ -379,10 +380,10 @@ xfs_acl_allow_set(
 		return EPERM;
 	if (kind == _ACL_TYPE_DEFAULT && !VN_ISDIR(vp))
 		return ENOTDIR;
-	if (vp->v_vfsp->vfs_flag & VFS_RDONLY)
+	if (vp->v_inode.i_sb->s_flags & MS_RDONLY)
 		return EROFS;
 	va.va_mask = XFS_AT_UID;
-	error = xfs_getattr(xfs_vtoi(vp), &va, 0);
+	error = xfs_getattr(ip, &va, 0);
 	if (error)
 		return error;
 	if (va.va_uid != current->fsuid && !capable(CAP_FOWNER))

fs/xfs/xfs_inode.c

@@ -1154,7 +1154,7 @@ xfs_ialloc(
 	if ((prid != 0) && (ip->i_d.di_version == XFS_DINODE_VERSION_1))
 		xfs_bump_ino_vers2(tp, ip);
 
-	if (pip && XFS_INHERIT_GID(pip, vp->v_vfsp)) {
+	if (pip && XFS_INHERIT_GID(pip, XFS_MTOVFS(pip->i_mount))) {
 		ip->i_d.di_gid = pip->i_d.di_gid;
 		if ((pip->i_d.di_mode & S_ISGID) && (mode & S_IFMT) == S_IFDIR) {
 			ip->i_d.di_mode |= S_ISGID;

fs/xfs/xfs_vnodeops.c

@@ -230,7 +230,7 @@ xfs_setattr(
 
 	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 @@ xfs_release(
 		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 @@ xfs_inactive(
 	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) {