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 5707AC6FD20 for ; Fri, 24 Mar 2023 20:45:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232245AbjCXUo7 (ORCPT ); Fri, 24 Mar 2023 16:44:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232282AbjCXUoy (ORCPT ); Fri, 24 Mar 2023 16:44:54 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C76FAF38 for ; Fri, 24 Mar 2023 13:44:50 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id x15so2524496pjk.2 for ; Fri, 24 Mar 2023 13:44:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; t=1679690689; x=1682282689; 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=1jQI1rntbGp4LT8Q/vDlFUvDa8D1jBQ+wWLS4DUAwTf9EwaNgwc/yImIbXtM63rDLC 2AeLgfc94BtGCbJYOzjucQa2FAe7BFANf2WRJRDzA8zbY5zIjEvejivqdOk21lVhKA9R 9X+9lJUk036RvdxvFYkkYttu44mUgJ60VKdMLqfcAxrtXfXtEvyGx/pc9vzxQvzkzX9D HmuwFUv1h7y1MO4Qu3wwXO96Fg0GEx2Oc/luCJgWs61OBxXVEbvZq/AbyAjAYKBQovRI pCyfO4t+LIehUZwX+OI0brDVerUhaA3ceDIV4ZGcJcUOEpWBj9zNF+5Sg6I4IZgBElUP mt7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679690689; x=1682282689; 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=ZGigI6TUDbPrPZRKbarBTDyBm7fp9Bx1shANj3BLVVf+Fz78rBGAu5/CJXXSQTJtje FWVOaz+2AgzAorCmLwNLdo8qK9axUBwLdxwVFMIrmsedqFYPZZ0Y/p52H6zzPdUcQAqr eDoPuIHIghkt6r4Glst8r8BYWWQGRtgcD6EnfQJkQoogpsHgQFcXzkmFZYsMLKsH3dkI okTC026IksoQGbat21NuHHPy/bPR+CcHv3vM7yjOMtCDi4zAu/+ikfKNInirXgsB7/JD 7Qhna6L8Tcq04rPCySh4jnUhcChIcYF9QkLATo2QicWmJ2vOat8BcbB2JUQEbW0l85sh lX1g== X-Gm-Message-State: AAQBX9dfaJfO4Yn5yt7acI1CFxQxihammqicTIJZ7vmAW3nfKoMQzrEG 3XmXaAAYy/ruPi+qpEwEjrjQ2Hsdj+1VSnfEYBOcPw== X-Google-Smtp-Source: AKy350ajPLouZV/V5pcUyPa5q49J8SiHt+D2LmNTScm3eGWKsnp68sbw937uXZuu6QA83L0977U6OA== X-Received: by 2002:a17:902:7c0d:b0:1a0:7663:731b with SMTP id x13-20020a1709027c0d00b001a07663731bmr3294395pll.5.1679690688920; Fri, 24 Mar 2023 13:44:48 -0700 (PDT) Received: from localhost.localdomain ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id jc9-20020a17090325c900b0019a87ede846sm14605344plb.285.2023.03.24.13.44.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Mar 2023 13:44:48 -0700 (PDT) From: Jens Axboe To: linux-fsdevel@vger.kernel.org Cc: torvalds@linux-foundation.org, brauner@kernel.org, Jens Axboe Subject: [PATCH 1/2] iov_iter: convert import_single_range() to ITER_UBUF Date: Fri, 24 Mar 2023 14:44:42 -0600 Message-Id: <20230324204443.45950-2-axboe@kernel.dk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230324204443.45950-1-axboe@kernel.dk> References: <20230324204443.45950-1-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