projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: eaf797a) | patch
cgroup: drop task_lock() protection around task->cgroups
authorTejun Heo <tj@kernel.org>
Tue, 25 Feb 2014 15:04:03 +0000 (10:04 -0500)
committerTejun Heo <tj@kernel.org>
Tue, 25 Feb 2014 15:04:03 +0000 (10:04 -0500)
commit0e1d768f1b1873272ec4e8dc1482bb5281855017
tree8c8156afaa83e9d647c0202d63112b4be6a240d1tree | snapshot (tar.gz zip)
parenteaf797abc53b0ab3f0a02d4ef873a565fcce6daacommit | diff
cgroup: drop task_lock() protection around task->cgroups

For optimization, task_lock() is additionally used to protect
task->cgroups.  The optimization is pretty dubious as either
css_set_rwsem is grabbed anyway or PF_EXITING already protects
task->cgroups.  It adds only overhead and confusion at this point.
Let's drop task_[un]lock() and update comments accordingly.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
include/linux/cgroup.h diff | blob | blame | history
kernel/cgroup.c diff | blob | blame | history