nfsd4: cast readlink() bug argument

As we already do in readv, writev.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index a9269f1..e76a17e 100644 (file)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1581,7 +1581,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
         */
 
        oldfs = get_fs(); set_fs(KERNEL_DS);
-       host_err = inode->i_op->readlink(path.dentry, buf, *lenp);
+       host_err = inode->i_op->readlink(path.dentry, (char __user *)buf, *lenp);
        set_fs(oldfs);
 
        if (host_err < 0)