1 files changed, 15 insertions, 5 deletions

diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 0eb464a39aae..7011d62acfc8 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -566,13 +566,23 @@ enum fsid_source fsid_source(struct svc_fh *fhp)
         case FSID_DEV:
         case FSID_ENCODE_DEV:
         case FSID_MAJOR_MINOR:
-                return FSIDSOURCE_DEV;
+                if (fhp->fh_export->ex_dentry->d_inode->i_sb->s_type->fs_flags
+                    & FS_REQUIRES_DEV)
+                        return FSIDSOURCE_DEV;
+                break;
         case FSID_NUM:
-                return FSIDSOURCE_FSID;
-        default:
                 if (fhp->fh_export->ex_flags & NFSEXP_FSID)
                         return FSIDSOURCE_FSID;
-                else
-                        return FSIDSOURCE_UUID;
+                break;
+        default:
+                break;
         }
+        /* either a UUID type filehandle, or the filehandle doesn't
+         * match the export.
+         */
+        if (fhp->fh_export->ex_flags & NFSEXP_FSID)
+                return FSIDSOURCE_FSID;
+        if (fhp->fh_export->ex_uuid)
+                return FSIDSOURCE_UUID;
+        return FSIDSOURCE_DEV;
 }