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authorLinus Torvalds <torvalds@linux-foundation.org>2014-07-19 20:27:55 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-07-19 20:27:55 +0400
commitd057190925d994b808e1d07e6c76b90a32caac77 (patch)
tree1f2d104f879435881d77f0d8d1e48c3224264d53 /fs/nfs/symlink.c
parentd1743b810d7a306d1dd837e086d18124bc38b575 (diff)
parent9de8033f1bbcce5ed23fe5da9ca1a5060207f7ed (diff)
downloadlinux-d057190925d994b808e1d07e6c76b90a32caac77.tar.xz
Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner: "The locking department delivers: - A rather large and intrusive bundle of fixes to address serious performance regressions introduced by the new rwsem / mcs technology. Simpler solutions have been discussed, but they would have been ugly bandaids with more risk than doing the right thing. - Make the rwsem spin on owner technology opt-in for architectures and enable it only on the known to work ones. - A few fixes to the lockdep userspace library" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER locking/mutex: Disable optimistic spinning on some architectures locking/rwsem: Reduce the size of struct rw_semaphore locking/rwsem: Rename 'activity' to 'count' locking/spinlocks/mcs: Micro-optimize osq_unlock() locking/spinlocks/mcs: Introduce and use init macro and function for osq locks locking/spinlocks/mcs: Convert osq lock to atomic_t to reduce overhead locking/spinlocks/mcs: Rename optimistic_spin_queue() to optimistic_spin_node() locking/rwsem: Allow conservative optimistic spinning when readers have lock tools/liblockdep: Account for bitfield changes in lockdeps lock_acquire tools/liblockdep: Remove debug print left over from development tools/liblockdep: Fix comparison of a boolean value with a value of 2
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