netdev - Re: [RFC PATCH 23/28] algif: Remove hash

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Message-ID: <ZB69A2xf/UfP9bX2@gondor.apana.org.au>
Date:   Sat, 25 Mar 2023 17:21:07 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     David Howells <dhowells@...hat.com>
Cc:     willy@...radead.org, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, viro@...iv.linux.org.uk,
        hch@...radead.org, axboe@...nel.dk, jlayton@...nel.org,
        brauner@...nel.org, torvalds@...ux-foundation.org,
        netdev@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-crypto@...r.kernel.org
Subject: Re: [RFC PATCH 23/28] algif: Remove hash_sendpage*()

On Sat, Mar 25, 2023 at 07:44:14AM +0000, David Howells wrote:
>
> Okay.  Btw, how much of a hard limit is ALG_MAX_PAGES?  Multipage folios can
> exceed the current limit (16 pages, 64K) in size.  Is it just to prevent too
> much memory being pinned at once?

Yes, we don't want user-space to be able to pin an unlimited
amount of memory.

Cheers,
-- 
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