Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 21/28] cgroupfs: create /sys/fs/cgroup to mount cgroupfs on | Date | Thu, 5 Aug 2010 15:24:11 -0700 |
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From: Greg KH <gregkh@suse.de>
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> --- kernel/cgroup.c | 13 ++++++++++++- 1 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index a8ce099..d83cab0 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); -- 1.7.2
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