From ab4cedb5930cb21f0a4810f64be0ab6cfca026f3 Mon Sep 17 00:00:00 2001
From: rtm <rtm>
Date: Fri, 31 Aug 2007 19:55:27 +0000
Subject: continuous quality management

---
 spinlock.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'spinlock.c')

diff --git a/spinlock.c b/spinlock.c
index 236235c..891f72c 100644
--- a/spinlock.c
+++ b/spinlock.c
@@ -20,8 +20,8 @@ initlock(struct spinlock *lock, char *name)
 
 // Acquire the lock.
 // Loops (spins) until the lock is acquired.
-// (Because contention is handled by spinning,
-// must not go to sleep holding any locks.)
+// Holding a lock for a long time may cause
+// other CPUs to waste time spinning to acquire it.
 void
 acquire(struct spinlock *lock)
 {
-- 
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