Adds functionality to read/write lock CLONE_THREAD fork()ing per-threadgroup
From: Ben Blum bb...@andrew.cmu.edu
This patch adds 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
Adds functionality to read/write lock CLONE_THREAD fork()ing per-threadgroup
From: Ben Blum bb...@andrew.cmu.edu
This patch adds an rwsem that lives in a threadgroup's sighand_struct (next to
the sighand's atomic count, to piggyback on its cacheline), and two functions
in kernel/cgroup.c (for
