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authorGao feng <gaofeng@cn.fujitsu.com>2012-12-06 14:38:57 +0800
committerTejun Heo <tj@kernel.org>2012-12-06 08:58:11 -0800
commitf33fddc2b9573d8359f1007d4bbe5cd587a0c093 (patch)
treea970a2cd9d59ed0bc80eea8e9392978c38517772 /kernel/cgroup.c
parent7083d0378a1746f2b45729cae494c6b92e75d73f (diff)
downloadop-kernel-dev-f33fddc2b9573d8359f1007d4bbe5cd587a0c093.zip
op-kernel-dev-f33fddc2b9573d8359f1007d4bbe5cd587a0c093.tar.gz
cgroup_rm_file: don't delete the uncreated files
in cgroup_add_file,when creating files for cgroup, some of creation may be skipped. So we need to avoid deleting these uncreated files in cgroup_rm_file, otherwise the warning msg will be triggered. "cgroup_addrm_files: failed to remove memory_pressure_enabled, err=-2" Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Acked-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@redhat.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'kernel/cgroup.c')
-rw-r--r--kernel/cgroup.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 5cc3724..f34c41b 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2724,12 +2724,6 @@ static int cgroup_add_file(struct cgroup *cgrp, struct cgroup_subsys *subsys,
simple_xattrs_init(&cft->xattrs);
- /* does @cft->flags tell us to skip creation on @cgrp? */
- if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgrp->parent)
- return 0;
- if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgrp->parent)
- return 0;
-
if (subsys && !test_bit(ROOT_NOPREFIX, &cgrp->root->flags)) {
strcpy(name, subsys->name);
strcat(name, ".");
@@ -2770,6 +2764,12 @@ static int cgroup_addrm_files(struct cgroup *cgrp, struct cgroup_subsys *subsys,
int err, ret = 0;
for (cft = cfts; cft->name[0] != '\0'; cft++) {
+ /* does cft->flags tell us to skip this file on @cgrp? */
+ if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgrp->parent)
+ continue;
+ if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgrp->parent)
+ continue;
+
if (is_add)
err = cgroup_add_file(cgrp, subsys, cft);
else
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