On Fri, Jun 26, 2020 at 07:09:03PM +1200, Barry Song wrote: > > + mutex_lock(&acomp_ctx->mutex); > + > + src = kmap(page); > + dst = acomp_ctx->dstmem; > + sg_init_one(&input, src, PAGE_SIZE); > + /* zswap_dstmem is of size (PAGE_SIZE * 2). Reflect same in sg_list */ > + sg_init_one(&output, dst, PAGE_SIZE * 2); > + acomp_request_set_params(acomp_ctx->req, &input, &output, PAGE_SIZE, dlen); > + ret = crypto_wait_req(crypto_acomp_compress(acomp_ctx->req), &acomp_ctx->wait); > + dlen = acomp_ctx->req->dlen; > + kunmap(page); Waiting on an async request like this is just silly. This defeats the whole purpose of having a fallback. Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
