kvfree_rcu: Use [READ/WRITE]_ONCE() macros to access to nr_bkv_objs

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nr_bkv_objs is a count of the objects in the kvfree_rcu page cache.
Accessing it requires holding the ->lock.  Switch to READ_ONCE() and
WRITE_ONCE() macros to provide lockless access to this counter.
This lockless access is used for the shrinker.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Uladzislau Rezki (Sony) 2021-04-15 19:19:57 +02:00 • committed by Paul E. McKenney

parent d0bfa8b3c4

commit ac7625ebd5

1 changed files with 4 additions and 10 deletions

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kernel/rcu/tree.c

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