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 94CF8C6FD1D for ; Mon, 27 Mar 2023 18:05:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232429AbjC0SFE (ORCPT ); Mon, 27 Mar 2023 14:05:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229829AbjC0SE6 (ORCPT ); Mon, 27 Mar 2023 14:04:58 -0400 Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 271EB3A81 for ; Mon, 27 Mar 2023 11:04:58 -0700 (PDT) Received: by mail-io1-xd31.google.com with SMTP id ca18e2360f4ac-752fe6c6d5fso5196939f.1 for ; Mon, 27 Mar 2023 11:04:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; t=1679940297; 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=3EjGDt5/YbxFXYxnvhi7Sb3qTRKFQWxan3eGqdFzFwvjVRhSQCUim7vOVia6mKtAjd bB2vAUiuTmDg88jukpFFKOhOf381yB+jdqEIaEAjCOa9BIhuSI6tfu6XMXOgDIFFW+lo BhLxM4R0T4JwxYl3eSI+Nt0AT+feun3lGJlcuBrAV3m9Ic3HLE2VBO75LlUi5LIx4uau 5Q/dRKx2EHICHPwjSmaJjV7QLkk7isw9pSsr9vzWgoJRZ3QThXMK/Fz0338HcWGCK0jW OWVChrzYa2qhneTK2LBxyQlUu4Tn7u1W1INcdaG/iMHUPQrbwnoXP76JSszA1SoPrPFD MyJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679940297; 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=dpDYHh1bMNaPzhBGzM1KDHivSwCmtUhqqo1c1juSJeuWwbFhHMP5tRCIsMc4YGyaT1 z0rWEw1ktrkgI8Qam89F1aA2gx0j0RBaOlA089Mg8o5X0NEa0gcAHfWTv+m3oo4GZX6W sVD0sWADzkpyd3hyPzc/sB+kG7A27cpuU2Y9xUxBLPUlgh4nG23dagPyiGyOC6kVwaiD 3JNmBdZIp+HmU0bZAhq+7JP/bK3AG1x3qeXC7pY7ngnE1SRZV4AW5exMo+qN002ta7Sc bzfghgLXZxz3P+tPnwqbuBRe6vEl83myoONoTBSct1qwBEsn7ZYw04UHpSVnHDx6cwEV 2NZg== X-Gm-Message-State: AAQBX9e+DZy4OOohJ5XV2YhKGHSwUF4U/qWC7cO01duNN/v4WLeIKRCe koR4C6UJJLZ6GhFQhwS6Vy7YwhbRrOXfQbw/tjbTtA== X-Google-Smtp-Source: AKy350aQJmrR+de0MRoP9/0Z2RHP0l/2slVlUluaT0k+KFu9KsOl1biHEGzFLNH9eilmnJ70zDXboQ== X-Received: by 2002:a92:6701:0:b0:318:8674:be8 with SMTP id b1-20020a926701000000b0031886740be8mr5240414ilc.2.1679940297156; Mon, 27 Mar 2023 11:04:57 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id e28-20020a0566380cdc00b0040634c51861sm8853235jak.132.2023.03.27.11.04.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Mar 2023 11:04:56 -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 3/4] iov_iter: convert import_single_range() to ITER_UBUF Date: Mon, 27 Mar 2023 12:04:48 -0600 Message-Id: <20230327180449.87382-4-axboe@kernel.dk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230327180449.87382-1-axboe@kernel.dk> References: <20230327180449.87382-1-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