Merge git://git.linux-nfs.org/pub/linux/nfs-2.6

* git://git.linux-nfs.org/pub/linux/nfs-2.6: (51 commits)
  nfs: remove nfs_put_link()
  nfs-build-fix-99
  git-nfs-build-fixes
  Merge branch 'odirect'
  NFS: alloc nfs_read/write_data as direct I/O is scheduled
  NFS: Eliminate nfs_get_user_pages()
  NFS: refactor nfs_direct_free_user_pages
  NFS: remove user_addr, user_count, and pos from nfs_direct_req
  NFS: "open code" the NFS direct write rescheduler
  NFS: Separate functions for counting outstanding NFS direct I/Os
  NLM: Fix reclaim races
  NLM: sem to mutex conversion
  locks.c: add the fl_owner to nlm_compare_locks
  NFS: Display the chosen RPCSEC_GSS security flavour in /proc/mounts
  NFS: Split fs/nfs/inode.c
  NFS: Fix typo in nfs_do_clone_mount()
  NFS: Fix compile errors introduced by referrals patches
  NFSv4: Ensure that referral mounts bind to a reserved port
  NFSv4: A root pathname is sent as a zero component4
  NFSv4: Follow a referral
  ...

1 files changed, 17 insertions, 1 deletions

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index cae74dd4c7f5..3ddda6f7ecc2 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -528,7 +528,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 
         lock_kernel();
 
-        res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
+        res = nfs_revalidate_mapping(inode, filp->f_mapping);
         if (res < 0) {
                 unlock_kernel();
                 return res;
@@ -868,6 +868,17 @@ int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
         return (nd->intent.open.flags & O_EXCL) != 0;
 }
 
+static inline int nfs_reval_fsid(struct inode *dir,
+                struct nfs_fh *fh, struct nfs_fattr *fattr)
+{
+        struct nfs_server *server = NFS_SERVER(dir);
+
+        if (!nfs_fsid_equal(&server->fsid, &fattr->fsid))
+                /* Revalidate fsid on root dir */
+                return __nfs_revalidate_inode(server, dir->i_sb->s_root->d_inode);
+        return 0;
+}
+
 static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
 {
         struct dentry *res;
@@ -900,6 +911,11 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
                 res = ERR_PTR(error);
                 goto out_unlock;
         }
+        error = nfs_reval_fsid(dir, &fhandle, &fattr);
+        if (error < 0) {
+                res = ERR_PTR(error);
+                goto out_unlock;
+        }
         inode = nfs_fhget(dentry->d_sb, &fhandle, &fattr);
         res = (struct dentry *)inode;
         if (IS_ERR(res))