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authorLi Zefan <lizf@cn.fujitsu.com>2011-12-27 14:25:55 +0800
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-12 11:33:24 -0800
commitb5c66ace2892b73dc2a55c1d3360224f388841cc (patch)
treee64a92d753df18c0eabd873b007ced9def775584 /fs
parentcf2f03e57c607a7863e6010ca9e5c4d08bc5b48c (diff)
cgroup: fix to allow mounting a hierarchy by name
commit 0d19ea866562e46989412a0676412fa0983c9ce7 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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