Commit bcf6de1b authored by Tejun Heo's avatar Tejun Heo
Browse files

cgroup: make ->pre_destroy() return void



All ->pre_destory() implementations return 0 now, which is the only
allowed return value.  Make it return void.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Reviewed-by: default avatarMichal Hocko <mhocko@suse.cz>
Acked-by: default avatarKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: default avatarLi Zefan <lizefan@huawei.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
parent 9d093cb1
......@@ -600,7 +600,7 @@ struct cftype blkcg_files[] = {
*
* This is the blkcg counterpart of ioc_release_fn().
*/
static int blkcg_pre_destroy(struct cgroup *cgroup)
static void blkcg_pre_destroy(struct cgroup *cgroup)
{
struct blkcg *blkcg = cgroup_to_blkcg(cgroup);
......@@ -622,7 +622,6 @@ static int blkcg_pre_destroy(struct cgroup *cgroup)
}
spin_unlock_irq(&blkcg->lock);
return 0;
}
static void blkcg_destroy(struct cgroup *cgroup)
......
......@@ -436,7 +436,7 @@ int cgroup_taskset_size(struct cgroup_taskset *tset);
struct cgroup_subsys {
struct cgroup_subsys_state *(*create)(struct cgroup *cgrp);
int (*pre_destroy)(struct cgroup *cgrp);
void (*pre_destroy)(struct cgroup *cgrp);
void (*destroy)(struct cgroup *cgrp);
int (*can_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset);
void (*cancel_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset);
......
......@@ -4054,7 +4054,7 @@ static int cgroup_rmdir(struct inode *unused_dir, struct dentry *dentry)
mutex_unlock(&cgroup_mutex);
for_each_subsys(cgrp->root, ss)
if (ss->pre_destroy)
WARN_ON_ONCE(ss->pre_destroy(cgrp));
ss->pre_destroy(cgrp);
mutex_lock(&cgroup_mutex);
/*
......
......@@ -155,7 +155,7 @@ out:
* Force the hugetlb cgroup to empty the hugetlb resources by moving them to
* the parent cgroup.
*/
static int hugetlb_cgroup_pre_destroy(struct cgroup *cgroup)
static void hugetlb_cgroup_pre_destroy(struct cgroup *cgroup)
{
struct hstate *h;
struct page *page;
......@@ -172,8 +172,6 @@ static int hugetlb_cgroup_pre_destroy(struct cgroup *cgroup)
}
cond_resched();
} while (hugetlb_cgroup_have_usage(cgroup));
return 0;
}
int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
......
......@@ -5002,12 +5002,11 @@ free_out:
return ERR_PTR(error);
}
static int mem_cgroup_pre_destroy(struct cgroup *cont)
static void mem_cgroup_pre_destroy(struct cgroup *cont)
{
struct mem_cgroup *memcg = mem_cgroup_from_cont(cont);
mem_cgroup_reparent_charges(memcg);
return 0;
}
static void mem_cgroup_destroy(struct cgroup *cont)
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment