lkml.org 
[lkml]   [2012]   [Feb]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 1/2] kernel: cgroup: push rcu read locking from css_is_ancestor() to callsite
Johannes Weiner wrote:
> Library functions should not grab locks when the callsites can do it,
> even if the lock nests like the rcu read-side lock does.
>
> Push the rcu_read_lock() from css_is_ancestor() to its single user,
> mem_cgroup_same_or_subtree() in preparation for another user that may
> already hold the rcu read-side lock.
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>

Acked-by: Li Zefan <lizf@cn.fujitsu.com>


\
 
 \ /
  Last update: 2012-03-01 02:37    [from the cache]
©2003-2011 Jasper Spaans