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SubjectRe: [BUGFIX] dm-crypt: Fix a bug of async cryption complete function
On Fri, Feb 27, 2009 at 01:28:46PM +0100, Milan Broz wrote:
>
> Like this?
>
> struct ablkcipher_request *req = (char *)dmreq - cc->dmreq_start;
> mempool_free(req, cc->req_pool);

Exactly. You could also embed the ablkcipher_request at the
end of dmreq, as in

struct dm_crypt_request {
struct scatterlist sg_in;
struct scatterlist sg_out;
struct ablkcipher_request req;
};

Then you can use container_of.

Cheers,
--
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