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| author | Paul E. McKenney | 2013-02-12 16:56:27 +0100 |
|---|---|---|
| committer | Paul E. McKenney | 2013-03-12 22:09:01 +0100 |
| commit | 4357fb570b3709c145384065d04b698a30dc722e (patch) | |
| tree | 2a245674b59344110301402516240d5e77b5bb18 /Documentation/RCU/whatisRCU.txt | |
| parent | Linux 3.9-rc2 (diff) | |
| download | kernel-qcow2-linux-4357fb570b3709c145384065d04b698a30dc722e.tar.gz kernel-qcow2-linux-4357fb570b3709c145384065d04b698a30dc722e.tar.xz kernel-qcow2-linux-4357fb570b3709c145384065d04b698a30dc722e.zip | |
rcu: Make bugginess of code sample more evident
One of the code samples in whatisRCU.txt shows a bug, but someone scanning
the document quickly might mistake it for a valid use of RCU. Add some
screaming comments to help keep speed-readers on track.
Reported-by: Nathan Zimmer <nzimmer@sgi.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/RCU/whatisRCU.txt')
| -rw-r--r-- | Documentation/RCU/whatisRCU.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/RCU/whatisRCU.txt b/Documentation/RCU/whatisRCU.txt index 0cc7820967f4..10df0b82f459 100644 --- a/Documentation/RCU/whatisRCU.txt +++ b/Documentation/RCU/whatisRCU.txt @@ -265,9 +265,9 @@ rcu_dereference() rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); - x = p->address; + x = p->address; /* BUG!!! */ rcu_read_lock(); - y = p->data; + y = p->data; /* BUG!!! */ rcu_read_unlock(); Holding a reference from one RCU read-side critical section |