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| author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2012-11-29 16:46:08 +0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-02-07 15:17:45 -0800 |
| commit | 49271ca60645d64197b28c0835fed39f74b1a2d7 (patch) | |
| tree | 361a1243a600d76ab94b44c7a9dd1d9dcc97c6b2 /kernel/srcu.c | |
| parent | 34a64b6bb64b5cf193932e2b4394c5284732e008 (diff) | |
| download | lwn-49271ca60645d64197b28c0835fed39f74b1a2d7.tar.gz lwn-49271ca60645d64197b28c0835fed39f74b1a2d7.zip | |
srcu: Update synchronize_srcu_expedited()'s comments
Because synchronize_srcu_expedited() no longer uses
synchronize_rcu_sched_expedited(), synchronize_srcu_expedited() no longer
indirectly acquires any CPU-hotplug-related locks. This commit therefore
updates the comments accordingly.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/srcu.c')
| -rw-r--r-- | kernel/srcu.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/kernel/srcu.c b/kernel/srcu.c index f098f1768215..e34f2991ed41 100644 --- a/kernel/srcu.c +++ b/kernel/srcu.c @@ -477,12 +477,11 @@ EXPORT_SYMBOL_GPL(synchronize_srcu); * Wait for an SRCU grace period to elapse, but be more aggressive about * spinning rather than blocking when waiting. * - * Note that it is illegal to call this function while holding any lock - * that is acquired by a CPU-hotplug notifier. It is also illegal to call - * synchronize_srcu_expedited() from the corresponding SRCU read-side - * critical section; doing so will result in deadlock. However, it is - * perfectly legal to call synchronize_srcu_expedited() on one srcu_struct - * from some other srcu_struct's read-side critical section, as long as + * Note that it is also illegal to call synchronize_srcu_expedited() + * from the corresponding SRCU read-side critical section; + * doing so will result in deadlock. However, it is perfectly legal + * to call synchronize_srcu_expedited() on one srcu_struct from some + * other srcu_struct's read-side critical section, as long as * the resulting graph of srcu_structs is acyclic. */ void synchronize_srcu_expedited(struct srcu_struct *sp) |