Re: [PATCH v1 1/6] rcu: Add support for consolidated-RCU reader checking

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To: Oleg Nesterov <oleg@xxxxxxxxxx>
Subject: Re: [PATCH v1 1/6] rcu: Add support for consolidated-RCU reader checking
From: Joel Fernandes <joel@xxxxxxxxxxxxxxxxx>
Date: Fri, 12 Jul 2019 09:56:29 -0400
Cc: linux-kernel@xxxxxxxxxxxxxxx, Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, c0d1n61at3@xxxxxxxxx, "David S. Miller" <davem@xxxxxxxxxxxxx>, edumazet@xxxxxxxxxx, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Hideaki YOSHIFUJI <yoshfuji@xxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Josh Triplett <josh@xxxxxxxxxxxxxxxx>, keescook@xxxxxxxxxxxx, kernel-hardening@xxxxxxxxxxxxxxxxxx, Lai Jiangshan <jiangshanlai@xxxxxxxxx>, Len Brown <lenb@xxxxxxxxxx>, linux-acpi@xxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, linux-pm@xxxxxxxxxxxxxxx, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, neilb@xxxxxxxx, netdev@xxxxxxxxxxxxxxx, "Paul E. McKenney" <paulmck@xxxxxxxxxxxxx>, Pavel Machek <pavel@xxxxxx>, peterz@xxxxxxxxxxxxx, "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>, Rasmus Villemoes <rasmus.villemoes@xxxxxxxxx>, rcu@xxxxxxxxxxxxxxx, Steven Rostedt <rostedt@xxxxxxxxxxx>, Tejun Heo <tj@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, will@xxxxxxxxxx, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@xxxxxxxxxx>
In-reply-to: <20190712121200.GC21989@redhat.com>
References: <20190711234401.220336-1-joel@joelfernandes.org> <20190711234401.220336-2-joel@joelfernandes.org> <20190712121200.GC21989@redhat.com>
User-agent: Mutt/1.10.1 (2018-07-13)

On Fri, Jul 12, 2019 at 02:12:00PM +0200, Oleg Nesterov wrote:
> On 07/11, Joel Fernandes (Google) wrote:
> >
> > +int rcu_read_lock_any_held(void)
> 
> rcu_sync_is_idle() wants it. You have my ack in advance ;)

Cool, thanks ;)

- Joel

References:
- [PATCH v1 0/6] Harden list_for_each_entry_rcu() and family
  - From: Joel Fernandes (Google)
- [PATCH v1 1/6] rcu: Add support for consolidated-RCU reader checking
  - From: Joel Fernandes (Google)
- Re: [PATCH v1 1/6] rcu: Add support for consolidated-RCU reader checking
  - From: Oleg Nesterov

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