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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-01-14 16:10:57 -0800
committerIngo Molnar <mingo@elte.hu>2010-01-16 10:25:22 +0100
commit4c54005ca438a8b46dd542b497d4f0dc2ca375e8 (patch)
tree4274fb9dcbd94480b93fecefcf83969db53461ba /Documentation/filesystems
parentb6407e863934965cdc66cbc244d811ceeb6f4d77 (diff)
rcu: 1Q2010 update for RCU documentation
Add expedited functions. Review documentation and update obsolete verbiage. Also fix the advice for the RCU CPU-stall kernel configuration parameter, and document RCU CPU-stall warnings. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com LKML-Reference: <12635142581866-git-send-email-> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/dentry-locking.txt3
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/filesystems/dentry-locking.txt b/Documentation/filesystems/dentry-locking.txt
index 4c0c575a4012..79334ed5daa7 100644
--- a/Documentation/filesystems/dentry-locking.txt
+++ b/Documentation/filesystems/dentry-locking.txt
@@ -62,7 +62,8 @@ changes are :
2. Insertion of a dentry into the hash table is done using
hlist_add_head_rcu() which take care of ordering the writes - the
writes to the dentry must be visible before the dentry is
- inserted. This works in conjunction with hlist_for_each_rcu() while
+ inserted. This works in conjunction with hlist_for_each_rcu(),
+ which has since been replaced by hlist_for_each_entry_rcu(), while
walking the hash chain. The only requirement is that all
initialization to the dentry must be done before
hlist_add_head_rcu() since we don't have dcache_lock protection