linux-kernel - Re: [PATCH 1/9] crypto: add zbufsize() interface

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Message-ID: <20211207062754.GA12622@gondor.apana.org.au>
Date:   Tue, 7 Dec 2021 17:27:55 +1100
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Geliang Tang <geliangtang@...il.com>,
        Arnd Bergmann <arnd@...db.de>, Haren Myneni <haren@...ibm.com>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        linux-crypto <linux-crypto@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/9] crypto: add zbufsize() interface

On Mon, Dec 06, 2021 at 10:24:47PM -0800, Dmitry Torokhov wrote:
>
> That is what I am confused about: why can't it be a part of API? Users
> that are running in atomic contexts would not be able to use it, but we
> have a lot of precedents for it. See for example spi_sync() vs
> spi_async(). Callers have a choice as to which one to use, based on
> their needs.

We already have a helper in the form of crypto_wait_req.  If you
have any suggestions of making this easier to use then I'm more than
happy to consider them.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt