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-rw-r--r--mm/cleancache.c2
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;