David Howells [off-list ref] wrote:

Remove hash_sendpage*() and use hash_sendmsg() as the latter seems to just
use the source pages directly anyway.

...

-       if (!(flags & MSG_MORE)) {
-               if (ctx->more)
-                       err = crypto_ahash_finup(&ctx->req);
-               else
-                       err = crypto_ahash_digest(&ctx->req);

You've just removed the optimised path from user-space to
finup/digest.  You need to add them back to sendmsg if you
want to eliminate sendpage.

Cheers,
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt