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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-10-05 14:03:02 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-10-05 14:03:02 -0700 |
| commit | 773e3f93577ffb493fb7c39b1a6ecf39b5748e87 (patch) | |
| tree | 78340c40e26e3dbcbde66b013710b6c916ecc05b | |
| parent | b3a084b9b684622b149e8dcf03855bf0d5fb588b (diff) | |
| download | linux-773e3f93577ffb493fb7c39b1a6ecf39b5748e87.tar.gz linux-773e3f93577ffb493fb7c39b1a6ecf39b5748e87.tar.bz2 linux-773e3f93577ffb493fb7c39b1a6ecf39b5748e87.zip | |
rcu: move check from rcu_dereference_bh to rcu_read_lock_bh_held
As suggested by Linus, push the irqs_disabled() down to the
rcu_read_lock_bh_held() level so that all callers get the benefit
of the correct check.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| -rw-r--r-- | include/linux/rcupdate.h | 2 | ||||
| -rw-r--r-- | kernel/rcupdate.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 83af1f8d8b74..9fbc54a2585d 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -454,7 +454,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) * Makes rcu_dereference_check() do the dirty work. */ #define rcu_dereference_bh(p) \ - rcu_dereference_check(p, rcu_read_lock_bh_held() || irqs_disabled()) + rcu_dereference_check(p, rcu_read_lock_bh_held()) /** * rcu_dereference_sched - fetch RCU-protected pointer, checking for RCU-sched diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index 4d169835fb36..0af1dc70fece 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -86,7 +86,7 @@ int rcu_read_lock_bh_held(void) { if (!debug_lockdep_rcu_enabled()) return 1; - return in_softirq(); + return in_softirq() || irqs_disabled(); } EXPORT_SYMBOL_GPL(rcu_read_lock_bh_held); |