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-rw-r--r--fs/exportfs/expfs.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 329a5d103846..645158dc33f1 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -435,6 +435,15 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
if (IS_ERR_OR_NULL(result))
return ERR_PTR(-ESTALE);
+ /*
+ * If no acceptance criteria was specified by caller, a disconnected
+ * dentry is also accepatable. Callers may use this mode to query if
+ * file handle is stale or to get a reference to an inode without
+ * risking the high overhead caused by directory reconnect.
+ */
+ if (!acceptable)
+ return result;
+
if (d_is_dir(result)) {
/*
* This request is for a directory.