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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-30 09:31:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-30 09:31:59 -0700
commit748e7fc20983fccd742e93c5b6a38ece1f71f80f (patch)
treea097b9e7875647416ca3a0661809a3ed63d2d21a /arch/s390/defconfig
parentMerge tag 'hwmon-for-linus-v4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging (diff)
parentcgroup: reduce read locked section of cgroup_threadgroup_rwsem during fork (diff)
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Merge branch 'for-4.8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo: "Two fixes for cgroup. - There still was a hole in enforcing cpuset rules, fixed by Li. - The recent switch to global percpu_rwseom for threadgroup locking revealed a couple issues in how percpu_rwsem is implemented and used by cgroup. Balbir found that the read locking section was too wide unnecessarily including operations which can often depend on IOs. With percpu_rwsem updates (coming through a different tree) and reduction of read locking section, all the reported locking latency issues, including the android one, are resolved. It looks like we can keep global percpu_rwsem locking for now. If there actually are cases which can't be resolved, we can go back to more complex per-signal_struct locking" * 'for-4.8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: reduce read locked section of cgroup_threadgroup_rwsem during fork cpuset: make sure new tasks conform to the current config of the cpuset
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