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authorBen Blum <bblum@andrew.cmu.edu>2011-05-26 16:25:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-26 17:12:34 -0700
commit4714d1d32d97239fb5ae3e10521d3f133a899b66 (patch)
treefb50707cefc386bf4e87cac9661a38dcfe3192df /security/device_cgroup.c
parentdcb3a08e69629ea65a3e9647da730bfaf670497d (diff)
cgroups: read-write lock CLONE_THREAD forking per threadgroup
Adds functionality to read/write lock CLONE_THREAD fork()ing per-threadgroup Add an rwsem that lives in a threadgroup's signal_struct that's taken for reading in the fork path, under CONFIG_CGROUPS. If another part of the kernel later wants to use such a locking mechanism, the CONFIG_CGROUPS ifdefs should be changed to a higher-up flag that CGROUPS and the other system would both depend on. This is a pre-patch for cgroup-procs-write.patch. Signed-off-by: Ben Blum <bblum@andrew.cmu.edu> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Matt Helsley <matthltc@us.ibm.com> Reviewed-by: Paul Menage <menage@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/device_cgroup.c')
0 files changed, 0 insertions, 0 deletions