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| author | Ben Blum <bblum@andrew.cmu.edu> | 2011-05-27 01:25:18 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-27 02:12:34 +0200 |
| commit | 4714d1d32d97239fb5ae3e10521d3f133a899b66 (patch) | |
| tree | fb50707cefc386bf4e87cac9661a38dcfe3192df /block | |
| parent | Documentation: configfs examples crash fix (diff) | |
| download | linux-4714d1d32d97239fb5ae3e10521d3f133a899b66.tar.xz linux-4714d1d32d97239fb5ae3e10521d3f133a899b66.zip | |
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 'block')
0 files changed, 0 insertions, 0 deletions