From: Weng Meiling <wengmeiling.w...@huawei.com>
When we use cgclear to unload the cgroup filesystem, we still can
see the umounted cgroup by using mount command. So fix the problem
by call system.
From: Weng Meiling <wengmeiling.w...@huawei.com>
---
src/config.c | 18 ++++++++++++++++--
1 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/src/config.c b/src/config.c
index 06f559b..967b3f7 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1141,6 +1141,20 @@ err_mnt:
return error;
}
+/* umounts given mount */
+static int umount_system(char *path)
+{
+ char cmd[FILENAME_MAX + 7];
+ int err = -1;
+
+ snprintf(cmd, sizeof(cmd), "%s %s", "umount", path);
+ err = system(cmd);
+ if (err != -1 && WIFEXITED(err) && !WEXITSTATUS(err))
+ err = 0;
+ return err;
+
+}
+
/* unmounts given mount, but only if it is empty */
static int cgroup_config_try_unmount(struct cg_mount_table_s *mount_info)
{
@@ -1197,7 +1211,7 @@ static int cgroup_config_try_unmount(struct
cg_mount_table_s *mount_info)
int err;
cgroup_dbg("unmounting %s at %s\n", mount_info->name,
mount->path);
- err = umount(mount->path);
+ err = umount_system(mount->path);
if (err && !ret) {
ret = ECGOTHER;
@@ -1305,7 +1319,7 @@ static int cgroup_config_unload_controller(const struct
cgroup_mount_point *moun
ret = cgroup_get_subsys_mount_point_begin(mount_info->name, &handle,
path);
while (ret == 0) {
- error = umount(path);
+ error = umount_system(path);
if (error) {
cgroup_warn("Warning: cannot unmount controller %s on
%s: %s\n",
mount_info->name, path,
-- 1.7.1
------------------------------------------------------------------------------
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