So we can add new cgroupfs interfaces for sane_behavior only.
Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
---
include/linux/cgroup.h | 1 +
kernel/cgroup.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 3aac34d..7ba7764 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -411,6 +411,7 @@ enum {
CFTYPE_ONLY_ON_ROOT = (1 << 0), /* only create on root cgrp */
CFTYPE_NOT_ON_ROOT = (1 << 1), /* don't create on root cgrp */
CFTYPE_INSANE = (1 << 2), /* don't create if sane_behavior */
+ CFTYPE_SANE = (1 << 3), /* only create if sane_behavior */
};
#define MAX_CFTYPE_NAME 64
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 737d752..6c770ee 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2809,6 +2809,8 @@ static int cgroup_addrm_files(struct cgroup *cgrp, struct cftype cfts[],
/* does cft->flags tell us to skip this file on @cgrp? */
if ((cft->flags & CFTYPE_INSANE) && cgroup_sane_behavior(cgrp))
continue;
+ if ((cft->flags & CFTYPE_SANE) && !cgroup_sane_behavior(cgrp))
+ continue;
if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgrp->parent)
continue;
if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgrp->parent)
--
1.8.0.2
--
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