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cgroup: warn if "xattr" is specified with "sane_behavior"

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Mount option "xattr" is no longer necessary as it's enabled by default
on kernfs.  Warn if "xattr" is specified with "sane_behavior" so that
the option can be removed in the future.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
This commit is contained in:
Tejun Heo 2014-02-12 09:29:48 -05:00
parent 2bd59d48eb
commit 86bf4b6875
2 changed files with 5 additions and 0 deletions
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2
include/linux/cgroup.h
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@ -264,6 +264,8 @@ enum {
* - "release_agent" and "notify_on_release" are removed.
* Replacement notification mechanism will be implemented.
*
* - "xattr" mount option is deprecated. kernfs always enables it.
*
* - cpuset: tasks will be kept in empty cpusets when hotplug happens
* and take masks of ancestors with non-empty cpus/mems, instead of
* being moved to an ancestor.

3
kernel/cgroup.c
View File

@ -1267,6 +1267,9 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
pr_err("cgroup: sane_behavior: clone_children is not allowed\n");
return -EINVAL;
}
if (opts->flags & CGRP_ROOT_XATTR)
pr_warning("cgroup: sane_behavior: xattr is always available, flag unnecessary\n");
}
/*