Re: [PATCH 0/5] Remove CRYPTO_ALG_ALLOCATES_MEMORY flag

[Herbert Xu]

On Thu, Jun 01, 2023 at 12:23:58PM +0100, Giovanni Cabiddu wrote:
>
> BTW, some time ago we did an assessment of the users of
> !CRYPTO_ALG_ALLOCATES_MEMORY and we came to the conclusion that we
> cannot just update the documentation.
> dm-crypt uses scatterlists with at most 4 entries. dm-integrity,
> instead, might allocate memory for scatterlists with an arbitrary number
> of entries.

dm-integrity shouldn't be using ALLOCATES_MEMORY at all.  It's
using GFP_KERNEL allocations right next to the crypto operations.

But those are some seriously big crypto operations, 16 thousand
4K pages in one hit?

Cheers,
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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