src/patches/suse-2.6.27.31/patches.fixes/nfs-05-Correct-the-NFS-mount-path-when-following-a-referral

   1 From b88f8a546f5dba213938fdfc11e66bc5c2421623 Mon Sep 17 00:00:00 2001
   2 From: Trond Myklebust <Trond.Myklebust@netapp.com>
   3 Date: Mon, 22 Jun 2009 15:09:14 -0400
   4 Subject: [PATCH 5/5] NFS: Correct the NFS mount path when following a referral
   5
   6 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
   7 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
   8 Acked-by: NeilBrown <neilb@suse.de>
   9 ---
  10  fs/nfs/super.c |   24 ++++++++++++++++++++++++
  11  1 file changed, 24 insertions(+)
  12
  13 --- linux-2.6.27-SLE11_BRANCH.orig/fs/nfs/super.c
  14 +++ linux-2.6.27-SLE11_BRANCH/fs/nfs/super.c
  15 @@ -2420,6 +2420,27 @@ static struct vfsmount *nfs_do_root_moun
  16         return root_mnt;
  17  }
  18
  19 +static void nfs_fix_devname(const struct path *path, struct vfsmount *mnt)
  20 +{
  21 +       char *page = (char *) __get_free_page(GFP_KERNEL);
  22 +       char *devname, *tmp;
  23 +
  24 +       if (page == NULL)
  25 +               return;
  26 +       devname = nfs_path(path->mnt->mnt_devname,
  27 +                       path->mnt->mnt_root, path->dentry,
  28 +                       page, PAGE_SIZE);
  29 +       if (devname == NULL)
  30 +               goto out_freepage;
  31 +       tmp = kstrdup(devname, GFP_KERNEL);
  32 +       if (tmp == NULL)
  33 +               goto out_freepage;
  34 +       kfree(mnt->mnt_devname);
  35 +       mnt->mnt_devname = tmp;
  36 +out_freepage:
  37 +       free_page((unsigned long)page);
  38 +}
  39 +
  40  static int nfs_follow_remote_path(struct vfsmount *root_mnt,
  41                 const char *export_path, struct vfsmount *mnt_target)
  42  {
  43 @@ -2446,6 +2467,9 @@ static int nfs_follow_remote_path(struct
  44         mnt_target->mnt_sb = s;
  45         mnt_target->mnt_root = dget(nd.path.dentry);
  46
  47 +       /* Correct the device pathname */
  48 +       nfs_fix_devname(&nd.path, mnt_target);
  49 +
  50         path_put(&nd.path);
  51         down_write(&s->s_umount);
  52         return 0;