[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>

6 files changed, 21 insertions, 23 deletions

diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index 83707708ebb1..1d72dbb1a73d 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/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 */
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index 9bba9f8be1eb..8ff465db909b 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/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) {
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index fb04b11bb815..5b95a7297fd1 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/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;
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 42d6ed1788ff..650c24ab27e2 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/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;
         }
diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c
index ad0494c5c0d1..342c57879901 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.c
+++ b/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 *
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h
index 5abcbd198d73..0f9ba6585c86 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.h
+++ b/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 */