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yaml --- r: 333259 b: refs/heads/master c: e6b5c08 h: refs/heads/master i: 333257: 3970163 333255: d610329 v: v3
git-mirror · Sep 26, 2012 · ae01aef · ae01aef
1 parent eb5d282
commit ae01aef
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3eab7315c8dd6685f58acba00319dd8b80a21d7a
+refs/heads/master: e6b5c0822bcf43b91a2cdcb535ea828e953b6590
diff --git a/trunk/Documentation/percpu-rw-semaphore.txt b/trunk/Documentation/percpu-rw-semaphore.txt
@@ -9,10 +9,10 @@ cores take the lock for reading, the cache line containing the semaphore
 is bouncing between L1 caches of the cores, causing performance
 degradation.
 
-Locking for reading it very fast, it uses RCU and it avoids any atomic
+Locking for reading is very fast, it uses RCU and it avoids any atomic
 instruction in the lock and unlock path. On the other hand, locking for
 writing is very expensive, it calls synchronize_rcu() that can take
-hundreds of microseconds.
+hundreds of milliseconds.
 
 The lock is declared with "struct percpu_rw_semaphore" type.
 The lock is initialized percpu_init_rwsem, it returns 0 on success and