linux-kernel - Re: [PATCH 0/9] Replace PREEMPT_RT ifdefs with preempt_[dis|en]able

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Message-ID: <Yv32aXMKwqmVMR1F@worktop.programming.kicks-ass.net>
Date:   Thu, 18 Aug 2022 10:20:57 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH 0/9] Replace PREEMPT_RT ifdefs with
 preempt_[dis|en]able_nested().

On Wed, Aug 17, 2022 at 06:26:54PM +0200, Sebastian Andrzej Siewior wrote:
> Folks,
> 
> this is the follow up to the "vfs.git pile 3 - dcache" pull request [0].
> It was concluded that the introduction of
> 	preempt_disable_nested()
> 
> in general makes sense and should be used in places where preemption on
> !RT is disabled by other means and PREEMPT_RT need to explicitly disable
> it.
> 
> This series introduces the macro and converts already existing users to
> that macro. The u64_stat interface was simplified to make the change
> simpler and code easier to follow.
> 
> [0] https://lore.kernel.org/all/YurA3aSb4GRr4wlW@ZenIV/

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>