linux-kernel - [PATCH v2 0/2] rcu_dereference_check

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Message-ID: <20140111181908.GA7358@redhat.com>
Date:	Sat, 11 Jan 2014 19:19:08 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...IV.linux.org.uk>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Eric Dumazet <edumazet@...gle.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/2] rcu_dereference_check_fdtable fix/cleanups

On 01/10, Paul E. McKenney wrote:
>
> On Fri, Jan 10, 2014 at 04:34:59PM +0100, Oleg Nesterov wrote:
> >
> > doesn't this look much simpler than adding the "bool unshared" argument
> > and changing the callers?
>
> I might be being too paranoid, but my concern with using rcu_lock_acquire()
> and rcu_lock_release()

And I agree, I no longer suggest to use rcu_lock_acquire/release.

It seems that you misunderstood me, let me send v2 for review.

Oleg.

 fs/file.c                |   30 +++++++++++-------------------
 include/linux/fdtable.h  |   35 +++++++++++++++++++++--------------
 include/linux/rcupdate.h |    2 --
 kernel/rcu/update.c      |   11 -----------
 4 files changed, 32 insertions(+), 46 deletions(-)

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