autofs4 - fix lockdep splat in autofs

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / pid.c

diff --git a/kernel/pid.c b/kernel/pid.c
index fa5f72227e5f432127c4f3b1383e3c93abcd0eaa..ce8e00deaccb38452188436438dc942313bd6c44 100644 (file)
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -137,7 +137,9 @@ static int pid_before(int base, int a, int b)
 }
 
 /*
- * We might be racing with someone else trying to set pid_ns->last_pid.
+ * We might be racing with someone else trying to set pid_ns->last_pid
+ * at the pid allocation time (there's also a sysctl for this, but racing
+ * with this one is OK, see comment in kernel/pid_namespace.c about it).
  * We want the winner to have the "later" value, because if the
  * "earlier" value prevails, then a pid may get reused immediately.
  *