linux-kernel - [PATCH 0/3] rcu - removing superfluous rcu_read_lock

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Date:	Mon,  1 Nov 2010 20:15:06 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	dhowells@...hat.com, lizf@...fujitsu.com, paul.moore@...com,
	johannes@...solutions.net, dipankar@...ibm.com
Cc:	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, kvm@...r.kernel.org,
	Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH 0/3] rcu - removing superfluous rcu_read_lock_held check

hi,

the rcu_dereference_check is defined as

  #define rcu_dereference_check(p, c) \
     __rcu_dereference_check((p), rcu_read_lock_held() || (c), __rcu)

so the caller does not need to specify rcu_read_lock_held()
condition.

Several places in kernel are spcifying rcu_read_lock_held as
rcu_dereference_check condition parameter.  I separated them
into 3 patches:

1/3 - cgroup - removing superfluous rcu_read_lock_held check
2/3 - kernel,cred,kvm,security - removing superfluous rcu_read_lock_held check
3/3 - net - removing superfluous rcu_read_lock_held check


sry if I might missed or added somebody wrongly to recipients

wbr,
jirka


Signed-off-by: Jiri Olsa <jolsa@...hat.com>
---
 include/linux/cgroup.h             |    1 -
 include/linux/cred.h               |    1 -
 include/linux/fdtable.h            |    1 -
 include/linux/kvm_host.h           |    1 -
 include/linux/rtnetlink.h          |    3 +--
 include/net/sock.h                 |    3 +--
 kernel/cgroup.c                    |    6 ++----
 kernel/exit.c                      |    1 -
 kernel/pid.c                       |    1 -
 kernel/rcutorture.c                |    2 --
 net/mac80211/sta_info.c            |    4 ----
 net/netlabel/netlabel_domainhash.c |    3 +--
 net/netlabel/netlabel_unlabeled.c  |    3 +--
 security/keys/keyring.c            |    1 -
 14 files changed, 6 insertions(+), 25 deletions(-)
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