From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A70CC6FD1D for ; Mon, 27 Mar 2023 23:27:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230288AbjC0X1p (ORCPT ); Mon, 27 Mar 2023 19:27:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36754 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230273AbjC0X1h (ORCPT ); Mon, 27 Mar 2023 19:27:37 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8BB7E2D4E for ; Mon, 27 Mar 2023 16:27:27 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id p3-20020a17090a74c300b0023f69bc7a68so10678087pjl.4 for ; Mon, 27 Mar 2023 16:27:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; t=1679959646; x=1682551646; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=oNiZElylqd4oRsTQgc5WV3Ag1/Bvc2tTEOYDdozkUio=; b=IajKLrMCXCjOZDwYufESbCKzfN53bE1qXlW3mAtwzWljdMtwRNMjPIkIMXMXItNH6r akEIBdQUNDvnIeQxVtxGvrZNVzEHKjSZLObDzxwGFILMaROEPn1w9bxYevtNn4CeAM7h Cte8OXuRU/hf7cmQxs1mLz+Y4MpoZLerSoLKlTtXPQOAbCwpD7KFFOpJamb9e6VWVYou wUYrdwpW1l4AP+jksxsnlnJBiCQY8CqaJd11f6UrXteXEDzg0c9glWP3o/j4afRx8Ncd xLlYU7XYIJ/fgW+LwTcKdA3IWPU86kZjegW043uFr+kbNo2LD1RZSveOf9gSPVTy6KFM arEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679959646; x=1682551646; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=oNiZElylqd4oRsTQgc5WV3Ag1/Bvc2tTEOYDdozkUio=; b=NDC5Ui+QiKfvWhbQh52bimXTuXHfAp+TMXDCxQzMBsd1c5LI+aPM9AVQ/mHjeoxMJx 4xK09aXQejUx0TzL+mPsu6ltzgs5oOoLwA8MfkJSMAbz69Vnu2Yd9gvmKnpb20SQaK3b UQx6XWpUGIoa5XgR6LczzgF4XCKCD5pGoJtamzJOmF/dwWuXBetf3cARI2ce90ithPYx 7qlSDV02mVYPTUlqddNDmuYVHihjUnD7X88V0noB+wixpJyr+t31ATv665cUOn9IVOFJ wmeLiDfX7sLcssdBbQaM+M2OFcTcRj1TyybtQhyCIGBdV6mabmbKu7BsqFokBhPDo0vb P9LQ== X-Gm-Message-State: AAQBX9cW7wF/jLHndVmxtdWpWyELSJuNuzndKMlDuayRUa+pCScmp900 zM1+LZJG36r6fFM092WyA4HY7xi9qy5N3NHBb1ZX5w== X-Google-Smtp-Source: AKy350bIVuvrrc+yJODeBmexe/uN1gyoPZzM/3KsQCh0w6lJ4Jh1Jl0uRDUKlk2TcjOyEQcZaSWkgA== X-Received: by 2002:a17:90a:644b:b0:233:b57f:23c5 with SMTP id y11-20020a17090a644b00b00233b57f23c5mr11511967pjm.2.1679959646443; Mon, 27 Mar 2023 16:27:26 -0700 (PDT) Received: from localhost.localdomain ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id s14-20020a170902b18e00b001a1ccb37847sm15534222plr.146.2023.03.27.16.27.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Mar 2023 16:27:25 -0700 (PDT) From: Jens Axboe To: linux-fsdevel@vger.kernel.org Cc: torvalds@linux-foundation.org, brauner@kernel.org, viro@zeniv.linux.org.uk, Jens Axboe Subject: [PATCH 2/3] iov_iter: convert import_single_range() to ITER_UBUF Date: Mon, 27 Mar 2023 17:27:12 -0600 Message-Id: <20230327232713.313974-3-axboe@kernel.dk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230327232713.313974-1-axboe@kernel.dk> References: <20230327232713.313974-1-axboe@kernel.dk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Since we're just importing a single vector, we don't have to turn it into an ITER_IOVEC. Instead turn it into an ITER_UBUF, which is cheaper to iterate. Signed-off-by: Jens Axboe --- lib/iov_iter.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 274014e4eafe..fc82cc42ffe6 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1866,9 +1866,7 @@ int import_single_range(int rw, void __user *buf, size_t len, if (unlikely(!access_ok(buf, len))) return -EFAULT; - iov->iov_base = buf; - iov->iov_len = len; - iov_iter_init(i, rw, iov, 1, len); + iov_iter_ubuf(i, rw, buf, len); return 0; } EXPORT_SYMBOL(import_single_range); -- 2.39.2