[RFC PATCH 9/9] cgroup: rework cgroup_path
From: Gao feng <hidden>
Date: 2012-12-17 06:43:35
Subsystem:
the rest · Maintainer:
Linus Torvalds
use cgrp == cgrp->top_cgroup instead of cgrp == NULL Signed-off-by: Gao feng <redacted> --- kernel/cgroup.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index b0caa1d..c111cf9 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c@@ -1976,12 +1976,14 @@ int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen) if ((start -= len) < buf) return -ENAMETOOLONG; memcpy(start, dentry->d_name.name, len); - cgrp = cgrp->parent; - if (!cgrp) + + if (cgrp == cgrp->top_cgroup) break; + cgrp = cgrp->parent; dentry = cgrp->dentry; - if (!cgrp->parent) + + if (cgrp == cgrp->top_cgroup) continue; if (--start < buf) return -ENAMETOOLONG;
--
1.7.7.6