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cgroup: move cgroup_clear_directory() call out of cgroup_populate_dir() 

cgroup_populate_dir() currently clears all files and then repopulate
the directory; however, the clearing part is only useful when it's
called from cgroup_remount().  Relocate the invocation to
cgroup_remount().

This is to prepare for further cgroup file handling updates.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
This commit is contained in:
Tejun Heo 2012-04-01 12:09:54 -07:00
parent 8b5a5a9dbc
commit ff4c8d503e
1 changed files with 2 additions and 4 deletions
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6
kernel/cgroup.c
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@ -1313,7 +1313,8 @@ static int cgroup_remount(struct super_block *sb, int *flags, char *data)
goto out_unlock;
}
/* (re)populate subsystem files */
/* clear out any existing files and repopulate subsystem files */
cgroup_clear_directory(cgrp->dentry);
cgroup_populate_dir(cgrp);
if (opts.release_agent)
@ -3644,9 +3645,6 @@ static int cgroup_populate_dir(struct cgroup *cgrp)
int err;
struct cgroup_subsys *ss;
/* First clear out any existing files */
cgroup_clear_directory(cgrp->dentry);
err = cgroup_add_files(cgrp, NULL, files, ARRAY_SIZE(files));
if (err < 0)
return err;