linux-kernel - Re: [RFC PATCH 2/2] regmap: Reject fast_io regmap configurations with RBTREE and MAPLE caches

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Message-ID: <7e50d739-fffe-48e7-9da1-baa761419820@roeck-us.net>
Date:   Fri, 21 Jul 2023 09:16:46 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Mark Brown <broonie@...nel.org>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        Heiko Stuebner <heiko@...ech.de>,
        Andy Yan <andy.yan@...k-chips.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Dan Carpenter <dan.carpenter@...aro.org>
Subject: Re: [RFC PATCH 2/2] regmap: Reject fast_io regmap configurations
 with RBTREE and MAPLE caches

On Fri, Jul 21, 2023 at 05:14:42PM +0100, Mark Brown wrote:
> On Fri, Jul 21, 2023 at 09:01:03AM -0700, Guenter Roeck wrote:
> > On 7/21/23 08:13, Mark Brown wrote:
> 
> > > Yeah.  You *can* use the dynamically allocating caches safely if you
> > > ensure that no new cache nodes are allocated during I/O.  I'd not
> > > realised people were actually doing this.
> 
> > Ok.
> 
> > Dan, let me know if you don't have time to send a proper patch.
> > I have one based on your suggestion prepared that I could send out
> > if needed.
> 
> Dan sent the patch already, assuming my CI doesn't blow up unexpectedly
> it should be applied tonight.

Excellent.

Thanks,
Guenter