1 files changed, 3 insertions, 3 deletions

diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index e3f3bbea8ae7..ca96ede30a10 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -312,8 +312,8 @@ int
 fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, struct svc_fh *ref_fh)
 {
         /* ref_fh is a reference file handle.
-         * if it is non-null, then we should compose a filehandle which is
-         * of the same version, where possible.
+         * if it is non-null and for the same filesystem, then we should compose
+         * a filehandle which is of the same version, where possible.
          * Currently, that means that if ref_fh->fh_handle.fh_version == 0xca
          * Then create a 32byte filehandle using nfs_fhbase_old
          *
@@ -332,7 +332,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, st
                 parent->d_name.name, dentry->d_name.name,
                 (inode ? inode->i_ino : 0));
 
-        if (ref_fh) {
+        if (ref_fh && ref_fh->fh_export == exp) {
                 ref_fh_version = ref_fh->fh_handle.fh_version;
                 if (ref_fh_version == 0xca)
                         ref_fh_fsid_type = 0;