Add the missing declaration in head file fs/nfs/nfs4_fs.h to fix this. Signed-off-by: Alex <zgxgoo@xxxxxxxxx> --- fs/nfs/nfs4_fs.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 0c9505dc852c..0cb79afa0a63 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -656,4 +656,10 @@ static inline void nfs4_xattr_cache_zap(struct inode *inode) #endif /* CONFIG_NFS_V4 */ + +/* nfs4file.c */ +#ifdef CONFIG_NFS_V4_2 +struct file *nfs42_ssc_open(struct vfsmount *ss_mnt, struct nfs_fh *src_fh, nfs4_stateid *stateid); +void nfs42_ssc_close(struct file *filep); +#endif #endif /* __LINUX_FS_NFS_NFS4_FS.H */ -- 2.25.1