diff options
| author | Greg KH <gregkh@suse.de> | 2010-08-05 13:53:35 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-05 13:53:35 -0700 |
| commit | 676db4af043014e852f67ba0349dae0071bd11f3 (patch) | |
| tree | 63435bb80dc87454c54aec82e9ba78671b26e688 /kernel/cgroup.c | |
| parent | 45daef0fdcc44f6af86fdebc4fc7eb7c79375398 (diff) | |
cgroupfs: create /sys/fs/cgroup to mount cgroupfs on
We really shouldn't be asking userspace to create new root filesystems.
So follow along with all of the other in-kernel filesystems, and provide
a mount point in sysfs.
For cgroupfs, this should be in /sys/fs/cgroup/ This change provides
that mount point when the cgroup filesystem is registered in the kernel.
Acked-by: Paul Menage <menage@google.com>
Acked-by: Dhaval Giani <dhaval.giani@gmail.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index a8ce0995440..d83cab06da8 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1623,6 +1623,8 @@ static struct file_system_type cgroup_fs_type = { .kill_sb = cgroup_kill_sb, }; +static struct kobject *cgroup_kobj; + static inline struct cgroup *__d_cgrp(struct dentry *dentry) { return dentry->d_fsdata; @@ -3894,9 +3896,18 @@ int __init cgroup_init(void) hhead = css_set_hash(init_css_set.subsys); hlist_add_head(&init_css_set.hlist, hhead); BUG_ON(!init_root_id(&rootnode)); + + cgroup_kobj = kobject_create_and_add("cgroup", fs_kobj); + if (!cgroup_kobj) { + err = -ENOMEM; + goto out; + } + err = register_filesystem(&cgroup_fs_type); - if (err < 0) + if (err < 0) { + kobject_put(cgroup_kobj); goto out; + } proc_create("cgroups", 0, NULL, &proc_cgroupstats_operations); |