From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi1-f198.google.com (mail-oi1-f198.google.com [209.85.167.198]) by kanga.kvack.org (Postfix) with ESMTP id BADB18E0001 for ; Mon, 28 Jan 2019 07:27:46 -0500 (EST) Received: by mail-oi1-f198.google.com with SMTP id a62so8866272oii.23 for ; Mon, 28 Jan 2019 04:27:46 -0800 (PST) Received: from huawei.com (szxga07-in.huawei.com. [45.249.212.35]) by mx.google.com with ESMTPS id v68si4781561oif.156.2019.01.28.04.27.43 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 28 Jan 2019 04:27:45 -0800 (PST) From: zhengbin Subject: [PATCH] mm/filemap: pass inclusive 'end_byte' parameter to filemap_range_has_page Date: Mon, 28 Jan 2019 20:31:19 +0800 Message-ID: <1548678679-18122-1-git-send-email-zhengbin13@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org, willy@infradead.org, darrick.wong@oracle.com, amir73il@gmail.com, david@fromorbit.com, hannes@cmpxchg.org, jrdr.linux@gmail.com, hughd@google.com, linux-mm@kvack.org Cc: houtao1@huawei.com, yi.zhang@huawei.com, zhengbin13@huawei.com The 'end_byte' parameter of filemap_range_has_page is required to be inclusive, so follow the rule. Signed-off-by: zhengbin --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index 9f5e323..a236bf3 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3081,7 +3081,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) if (iocb->ki_flags & IOCB_NOWAIT) { /* If there are pages to writeback, return */ if (filemap_range_has_page(inode->i_mapping, pos, - pos + write_len)) + pos + write_len - 1)) return -EAGAIN; } else { written = filemap_write_and_wait_range(mapping, pos, -- 2.7.4 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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE4B8C282C8 for ; Mon, 28 Jan 2019 12:27:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8003C2086C for ; Mon, 28 Jan 2019 12:27:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8003C2086C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id F40C78E0007; Mon, 28 Jan 2019 07:27:46 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id EEFAE8E0001; Mon, 28 Jan 2019 07:27:46 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DDD4D8E0007; Mon, 28 Jan 2019 07:27:46 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from mail-oi1-f198.google.com (mail-oi1-f198.google.com [209.85.167.198]) by kanga.kvack.org (Postfix) with ESMTP id BADB18E0001 for ; Mon, 28 Jan 2019 07:27:46 -0500 (EST) Received: by mail-oi1-f198.google.com with SMTP id a62so8866272oii.23 for ; Mon, 28 Jan 2019 04:27:46 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:mime-version; bh=IPsrxOh9fwpUlxI13AoEKO6stESu0pWTX5wGLwdEvPo=; b=GBsrn5YhlkS2GsshPf9/7J3DYNc7nGeIu80+7xU3PSY2QbRitlGstCPGZa5MnizO1X G1iucWSeMvhLVHesCCGotu1/XErze8EUlOcWTSidKYW6PpmUljnqUt8xASRLPvx9DIe5 AGaIro/Hv0erXKBOQ4NGmavUDWT6F1jG+MRJrq+duG2Bg/kN0g+nRZwuWNZEf3U2CaAV Ya+yaV+nctlANA2eAHjoXRv/6V9gmKUCri2VvgCthqr7vqec5Hf8g5/LnvIDZDpSmxFK gp7arA6KWGIxwsAcnHHU4h5908/LzQtZrNaUTyG4leq2BDiaYORGl4gzHi42FvY7dGhh tbLw== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of zhengbin13@huawei.com designates 45.249.212.35 as permitted sender) smtp.mailfrom=zhengbin13@huawei.com X-Gm-Message-State: AJcUukdeUh7jgIYcuCBIRRIZZHfysEQvFGZ/fUNy8vcLQGOqYpKUK9Ti /fXoZwXogUyB+2wcroAFPlskMAA6b0pThty64zUfESvlzGRXCVHbDJTYRoM3p2p1aF2j3TRIPPr /SzvG6gfCSJIGNv0TMCMyOtKlt2XEQOJV2kvm07t8WYiOP9e5lKP+VNlZtWw6hwz7zg== X-Received: by 2002:a9d:4c8b:: with SMTP id m11mr15349899otf.111.1548678466442; Mon, 28 Jan 2019 04:27:46 -0800 (PST) X-Google-Smtp-Source: ALg8bN6jtJy9XmCuOEu395r5EpepI9tc2Kegojn2NQHjDib0UL32+02nzYpBc7xRgWRkhwiDBCj6 X-Received: by 2002:a9d:4c8b:: with SMTP id m11mr15349877otf.111.1548678465729; Mon, 28 Jan 2019 04:27:45 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1548678465; cv=none; d=google.com; s=arc-20160816; b=tzEN1H6vRttXrIedcP18xddwbifu3GxX3yhbfo/lghedhlSxWJldWX0MlFNphqpCTS I+rTlQgnhs0dIXSk3zivMPsdX0GcSWgGLpJuKLizNYGxjcmXtUslegCrOKz3a6UIlPTz 1GeslumwiAC65Pvv4JBS35qU2yCn6VNT9O4MsCiO8ctNPChXJ2djHSVRAZRaZ4I1MZ3J QlAWb1s5ax7w1tOg+MfuVF5gKUggiKaRhPItqmh4l0se6Dly4V1sEVrK5saEEUirkoR6 lUqCkVbqO4LrlZIJWoKiMnEiA8S1R9LhTpnVDE6O8CGyA1angm+sazHnor8RF2S4Kg7j vTzQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:message-id:date:subject:cc:to:from; bh=IPsrxOh9fwpUlxI13AoEKO6stESu0pWTX5wGLwdEvPo=; b=vVfskvR28qux/hNTVZLlSti63KJK0WhzV3EHhYZkV6uMgZVqkLO5uMO8848ddAZfRz Ie9fBD4DYDo9PxxmeQEymIX3KBuBKdhDQhCVX/iWmCMRWCbu5h0Dn2g4FQflnuwYRXOa wr+pmGPnaJ870BuqFy7/mI4tj1NANnRgdyGMsI5LSWTa1QnXsHXX12IK5t8Xg2XIKcXO 6lrHjZNhcCLB92WFDOYFJHI/znjrpwL6mCh2qpl3jUd7yDsS+CyYEbi0GcmvT9d04ecg Yo8SPOCOxa2PYz1XqmM2lVmb0+byrVhRCUrUkKx74wMLROxg0x278eZF57waT58vSflv 6caA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of zhengbin13@huawei.com designates 45.249.212.35 as permitted sender) smtp.mailfrom=zhengbin13@huawei.com Received: from huawei.com (szxga07-in.huawei.com. [45.249.212.35]) by mx.google.com with ESMTPS id v68si4781561oif.156.2019.01.28.04.27.43 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 28 Jan 2019 04:27:45 -0800 (PST) Received-SPF: pass (google.com: domain of zhengbin13@huawei.com designates 45.249.212.35 as permitted sender) client-ip=45.249.212.35; Authentication-Results: mx.google.com; spf=pass (google.com: domain of zhengbin13@huawei.com designates 45.249.212.35 as permitted sender) smtp.mailfrom=zhengbin13@huawei.com Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 0DD3E6AAAB325446A95F; Mon, 28 Jan 2019 20:27:38 +0800 (CST) Received: from huawei.com (10.90.53.225) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.408.0; Mon, 28 Jan 2019 20:27:32 +0800 From: zhengbin To: , , , , , , , , CC: , , Subject: [PATCH] mm/filemap: pass inclusive 'end_byte' parameter to filemap_range_has_page Date: Mon, 28 Jan 2019 20:31:19 +0800 Message-ID: <1548678679-18122-1-git-send-email-zhengbin13@huawei.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Originating-IP: [10.90.53.225] X-CFilter-Loop: Reflected X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Message-ID: <20190128123119.hxJ3xj0-StIvzrug1FRQtS_TGwXaNbBBx2WdEhys25o@z> The 'end_byte' parameter of filemap_range_has_page is required to be inclusive, so follow the rule. Signed-off-by: zhengbin --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index 9f5e323..a236bf3 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3081,7 +3081,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) if (iocb->ki_flags & IOCB_NOWAIT) { /* If there are pages to writeback, return */ if (filemap_range_has_page(inode->i_mapping, pos, - pos + write_len)) + pos + write_len - 1)) return -EAGAIN; } else { written = filemap_write_and_wait_range(mapping, pos, -- 2.7.4