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(parent: d666f61) | patch
srcu: Merge ->srcu_state into ->srcu_gp_seq
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Wed, 22 Mar 2017 22:26:18 +0000 (15:26 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Tue, 18 Apr 2017 18:38:22 +0000 (11:38 -0700)
commit73a8efdfd8e9bd4a2cb584d849eca136c7f40f35
treee8140078439a4e0fda35fa54d000212be1f6f00etree | snapshot
parentd666f61be5c8d675722201d67cb6178f117fc104commit | diff
srcu: Merge ->srcu_state into ->srcu_gp_seq

Updating ->srcu_state and ->srcu_gp_seq will lead to extremely complex
race conditions given multiple callback queues, so this commit takes
advantage of the two-bit state now available in rcu_seq counters to
store the state in the bottom two bits of ->srcu_gp_seq.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
include/linux/srcu.h diff | blob | history
kernel/rcu/rcu.h diff | blob | history
kernel/rcu/srcu.c diff | blob | history
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