Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu, 4 Aug 2022 06:52:23 -0400
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Linus Torvalds <torvalds@linux-foundation.org>
Cc:     Matthew Wilcox <willy@infradead.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [git pull] vfs.git pile 3 - dcache
Message-ID: <20220804065223.209ac060@gandalf.local.home>
In-Reply-To: <CAHk-=wiMFU1+pyG9AgbGSZfxNpoOzOEmjVyy87J6Q8aPKAJ7jQ@mail.gmail.com>
References: <YurA3aSb4GRr4wlW@ZenIV>
        <CAHk-=wizUgMbZKnOjvyeZT5E+WZM0sV+zS5Qxt84wp=BsRk3eQ@mail.gmail.com>
        <YuruqoGHJONpdZcK@home.goodmis.org>
        <CAHk-=whJvgykcTnR+BMJNwd+me5wvg+CxjSBeiPYTR1B2g5NpQ@mail.gmail.com>
        <20220803185936.228dc690@gandalf.local.home>
        <YusDmF39ykDmfSkF@casper.infradead.org>
        <CAHk-=wh6VSqsnANHkQpw=yD-Hkt90Y1LX=ad9+r+SusfriUOfA@mail.gmail.com>
        <YusV8cr382PeBNLM@casper.infradead.org>
        <20220803213255.3ab719e3@gandalf.local.home>
        <CAHk-=wiMFU1+pyG9AgbGSZfxNpoOzOEmjVyy87J6Q8aPKAJ7jQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Wed, 3 Aug 2022 19:16:12 -0700
Linus Torvalds <torvalds@linux-foundation.org> wrote:

> > I wonder if raw_preempt_disable() would be another name to use?  
> 
> NO!
> 
> The point is that normal non-RT code does *not* disable preemption at
> all, because it is already disabled thanks to the earlier spinlock.
> 
> So we definitely do *not* want to call this "raw_preempt_disable()",
> because it's actually not supposed to normally disable anything at
> all. Only for RT, where the spinlock code doesn't do it.

Yeah, I'm just brainstorming ideas on what we could use to make that name a
little shorter, and I'm not coming up with much.

OK, I'm becoming colorblind with this shed.

-- Steve