Re: [PATCH 2/3] crypto: api - adjust meaning of CRYPTO_ALG_ALLOCATES_MEMORY

[Eric Biggers <ebiggers@kernel.org>]

On Wed, Jul 05, 2023 at 05:40:08PM +0100, Giovanni Cabiddu wrote:

> Algorithms that do not set this flag will guarantee

"will guarantee" => "guarantee"
 
> that memory is not allocated during request processing, except in
> the avoidable exception cases described below.

"avoidable exception cases" => "exception cases"

Whether they are avoidable depends on the user.

> * Users can request an algorithm with this flag unset if they can't handle
> * memory allocation failures or sleeping during request processing.

Why add the "sleeping during request processing" part?  Isn't that controlled on
a per-request basis by CRYPTO_TFM_REQ_MAY_SLEEP which is a separate thing?

> * They should also follow the constraints below.

"should" => "must"

> + *	- The input and output scatterlists must have no more than 4 entries.
> + *	  If the scatterlists contain more than 4 entries, the algorithm may
> + *	  allocate memory.

"If the scatterlists contains" => "If either scatterlist contains"

Otherwise it is unclear whether this is talking about the length of each
scatterlist individually, or the sum of their lengths.

- Eric