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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-01-15 01:10:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-01-16 10:25:22 +0100 |
| commit | 4c54005ca438a8b46dd542b497d4f0dc2ca375e8 (patch) | |
| tree | 4274fb9dcbd94480b93fecefcf83969db53461ba /Documentation/filesystems/dentry-locking.txt | |
| parent | rcu: Give different levels of the rcu_node hierarchy distinct lockdep names (diff) | |
| download | linux-4c54005ca438a8b46dd542b497d4f0dc2ca375e8.tar.xz linux-4c54005ca438a8b46dd542b497d4f0dc2ca375e8.zip | |
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/dentry-locking.txt')
| -rw-r--r-- | Documentation/filesystems/dentry-locking.txt | 3 |
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 This works in conjunction with hlist_for_each_rcu(), + which has since been replaced by hlist_for_each_entry_rcu(), while walking the hash chain.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 |