rcu/nocb: Use separate flag to indicate disabled ->cblist

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NULLing the RCU_NEXT_TAIL pointer was a clever way to save a byte, but
forward-progress considerations would require that this pointer be both
NULL and non-NULL, which, absent a quantum-computer port of the Linux
kernel, simply won't happen.  This commit therefore creates as separate
->enabled flag to replace the current NULL checks.

[ paulmck: Add include files per 0day test robot and -next. ]
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>

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Paul E. McKenney 2019-04-12 12:34:41 -07:00

parent 18cd8c93e6

commit 1bb5f9b95a

4 changed files with 8 additions and 3 deletions

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4

include/linux/rcu_segcblist.h

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3

kernel/rcu/rcu_segcblist.c

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2

kernel/rcu/rcu_segcblist.h

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2

kernel/rcu/tree_plugin.h

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