1 files changed, 1 insertions, 1 deletions

diff --git a/mm/cleancache.c b/mm/cleancache.c
index 32e6f4136fa2..d76ba74be2d0 100644
--- a/mm/cleancache.c
+++ b/mm/cleancache.c
@@ -89,7 +89,7 @@ static int cleancache_get_key(struct inode *inode,
                 fhfn = sb->s_export_op->encode_fh;
                 if  (fhfn) {
                         len = (*fhfn)(inode, &key->u.fh[0], &maxlen, NULL);
-                        if (len <= 0 || len == 255)
+                        if (len <= FILEID_ROOT || len == FILEID_INVALID)
                                 return -1;
                         if (maxlen > CLEANCACHE_KEY_MAX)
                                 return -1;