Pull hotplug into release branch

[sfrench/cifs-2.6.git] / fs / nfs / super.c

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index fa517ae9207f6d04f66fcf4c0b12ef229bc5a176..2426e713b77f19567f82824c39126acacb59721d 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1054,10 +1054,11 @@ static int nfs_validate_mount_data(void *options,
 {
        struct nfs_mount_data *data = (struct nfs_mount_data *)options;
 
+       memset(args, 0, sizeof(*args));
+
        if (data == NULL)
                goto out_no_data;
 
-       memset(args, 0, sizeof(*args));
        args->flags             = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP);
        args->rsize             = NFS_MAX_FILE_IO_SIZE;
        args->wsize             = NFS_MAX_FILE_IO_SIZE;
@@ -1474,6 +1475,11 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags,
                error = PTR_ERR(mntroot);
                goto error_splat_super;
        }
+       if (mntroot->d_inode->i_op != &nfs_dir_inode_operations) {
+               dput(mntroot);
+               error = -ESTALE;
+               goto error_splat_super;
+       }
 
        s->s_flags |= MS_ACTIVE;
        mnt->mnt_sb = s;
@@ -1531,10 +1537,11 @@ static int nfs4_validate_mount_data(void *options,
        struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
        char *c;
 
+       memset(args, 0, sizeof(*args));
+
        if (data == NULL)
                goto out_no_data;
 
-       memset(args, 0, sizeof(*args));
        args->rsize             = NFS_MAX_FILE_IO_SIZE;
        args->wsize             = NFS_MAX_FILE_IO_SIZE;
        args->timeo             = 600;