From: Weng Meiling <wengmeiling.w...@huawei.com>
When we use memory subsystem, the memory.oom_control value we get like
this:
oom_kill_disable 0
under_oom 0
but we set the value just by writing a value(0 or 1) like this:
#echo 1 > memory.oom_control
so setting the value memory.oom_control by cgset --copy-from or
the config from cgsnapshot will fail, so before setting the control
file value, checking the value and resetting the value.
Signed-off-by: Weng Meiling <wengmeiling.w...@huawei.com>
---
src/api.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/src/api.c b/src/api.c
index e5e1959..72a285b 100644
--- a/src/api.c
+++ b/src/api.c
@@ -1351,6 +1351,25 @@ static int cg_create_control_group(const char *path)
}
/*
+ *
+ *cg_set_control_value_before()
+ *This is the function for deal with some sepcial control file value.
+ */
+static void cg_set_control_value_before(char *name, char *val)
+{
+ if (!strcmp("memory.oom_control", name) && strstr(val,
"oom_kill_disable")) {
+ /* get the control setting */
+ char *seps = " ,\n";
+ char *temp = NULL;
+ temp = strtok(val, seps);
+ temp = strtok(NULL, seps);
+ strcpy(val, temp);
+ return ;
+ }
+}
+
+
+/*
* set_control_value()
* This is the low level function for putting in a value in a control file.
* This function takes in the complete path and sets the value in val in that
@@ -1463,6 +1482,8 @@ int cgroup_modify_cgroup(struct cgroup *cgroup)
error = ECGOTHER;
goto err;
}
+
cg_set_control_value_before(cgroup->controller[i]->values[j]->name,
+ cgroup->controller[i]->values[j]->value);
error = cg_set_control_value(path,
cgroup->controller[i]->values[j]->value);
free(path);
@@ -1644,6 +1665,8 @@ int cgroup_create_cgroup(struct cgroup *cgroup, int
ignore_ownership)
error = ECGOTHER;
goto err;
}
+
cg_set_control_value_before(cgroup->controller[k]->values[j]->name,
+ cgroup->controller[k]->values[j]->value);
error = cg_set_control_value(path,
cgroup->controller[k]->values[j]->value);
/*
-- 1.7.1
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