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| author | Li Zefan <lizf@cn.fujitsu.com> | 2011-12-27 14:25:55 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-01-05 09:59:46 -0800 |
| commit | 0d19ea866562e46989412a0676412fa0983c9ce7 (patch) | |
| tree | 335439bc9d13da86a7b6955907a92ddab03ceb57 /kernel/cgroup.c | |
| parent | 305f3c8b20ba1ca94829329acdbf22e689304dba (diff) | |
| download | lwn-0d19ea866562e46989412a0676412fa0983c9ce7.tar.gz lwn-0d19ea866562e46989412a0676412fa0983c9ce7.zip | |
cgroup: fix to allow mounting a hierarchy by name
If we mount a hierarchy with a specified name, the name is unique,
and we can use it to mount the hierarchy without specifying its
set of subsystem names. This feature is documented is
Documentation/cgroups/cgroups.txt section 2.3
Here's an example:
# mount -t cgroup -o cpuset,name=myhier xxx /cgroup1
# mount -t cgroup -o name=myhier xxx /cgroup2
But it was broken by commit 32a8cf235e2f192eb002755076994525cdbaa35a
(cgroup: make the mount options parsing more accurate)
This fixes the regression.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index bab5c17e7781..39c7caef085a 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1193,10 +1193,10 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts) /* * If the 'all' option was specified select all the subsystems, - * otherwise 'all, 'none' and a subsystem name options were not - * specified, let's default to 'all' + * otherwise if 'none', 'name=' and a subsystem name options + * were not specified, let's default to 'all' */ - if (all_ss || (!all_ss && !one_ss && !opts->none)) { + if (all_ss || (!one_ss && !opts->none && !opts->name)) { for (i = 0; i < CGROUP_SUBSYS_COUNT; i++) { struct cgroup_subsys *ss = subsys[i]; if (ss == NULL) |