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[tip/core/rcu,1/4] Documentation: Fix memory-barriers.txt example

Message ID 1351613076-22022-1-git-send-email-paulmck@linux.vnet.ibm.com
State Accepted
Commit f191eec58803e1e16c3421638cdcc9195c425851
Headers show

Commit Message

Paul E. McKenney Oct. 30, 2012, 4:04 p.m. UTC 
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>

This commit fixes a broken example of overlapping stores in the
Documentation/memory-barriers.txt file.

Reported-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 Documentation/memory-barriers.txt |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)
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Patch

diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index 2759f7c..3c4e1b3 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -251,12 +251,13 @@  And there are a number of things that _must_ or _must_not_ be assumed:
 
      And for:
 
-	*A = X; Y = *A;
+	*A = X; *(A + 4) = Y;
 
-     we may get either of:
+     we may get any of:
 
-	STORE *A = X; Y = LOAD *A;
-	STORE *A = Y = X;
+	STORE *A = X; STORE *(A + 4) = Y;
+	STORE *(A + 4) = Y; STORE *A = X;
+	STORE {*A, *(A + 4) } = {X, Y};
 
 
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