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| author | Lai Jiangshan <laijs@linux.alibaba.com> | 2019-11-01 14:06:22 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2020-01-24 21:27:33 +0300 |
| commit | 2eeba5838fd8c5e19bb91e25624116936348e7af (patch) | |
| tree | 2b353e5078dbf4b377b776924771983cb70fbb77 /net/unix/af_unix.c | |
| parent | c130d2dc93cd03323494d82dbe7b5fb0d101ab62 (diff) | |
| download | linux-2eeba5838fd8c5e19bb91e25624116936348e7af.tar.xz | |
rcu: Clear .exp_hint only when deferred quiescent state has been reported
Currently, the .exp_hint flag is cleared in rcu_read_unlock_special(),
which works, but which can also prevent subsequent rcu_read_unlock() calls
from helping expedite the quiescent state needed by an ongoing expedited
RCU grace period. This commit therefore defers clearing of .exp_hint
from rcu_read_unlock_special() to rcu_preempt_deferred_qs_irqrestore(),
thus ensuring that intervening calls to rcu_read_unlock() have a chance
to help end the expedited grace period.
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions