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 6ED96C7619A for ; Wed, 12 Apr 2023 04:20:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229536AbjDLEU1 (ORCPT ); Wed, 12 Apr 2023 00:20:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49466 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229516AbjDLEUY (ORCPT ); Wed, 12 Apr 2023 00:20:24 -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 850DE268A; Tue, 11 Apr 2023 21:20:23 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id y11-20020a17090a600b00b0024693e96b58so9267722pji.1; Tue, 11 Apr 2023 21:20:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681273223; x=1683865223; 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=Y4IOmy3b56e4fr9kImeRiAKyUprXNmIrwZPgWk/ZeOk=; b=dafrD2NrCOk26li468Xsgot84smh8BLDTUdYDWr3D/p55vYOuemvPTHGnZygXfR2M2 fQ5C6T83yKDDfhLgjgRVXbU+1PfKDbFig7d7461nNb2hBAQ6rUwckfxk/lBT9mJOoU6x 9N+MbmA8znk1NnZe8GfV2y8PLAzK7u2k8dB2ZutKoDcCmeTg8VY5uThJ0xGW/79S9XEG RyUcCCAuGOipOf0ikQkHkrPB+WB0IpfNi5T/E3sqhzMTOlhLdr5mfC5EI+G9z5htv8rG N2Vm4k84+bdtYDKf071fHK8+kzm7j/iPrawTGisLB1vOFhJgtnDRv39dbe5QnzbY773j Z6gg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1681273223; x=1683865223; 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=Y4IOmy3b56e4fr9kImeRiAKyUprXNmIrwZPgWk/ZeOk=; b=u7OaJTMT++am1hVplJnBtXG++KzVzYeBjvwZooLSTOX1PiqaS5X2FtXZTZldEFdURZ EbXkjs1X3dOLBI8BGHyoeTv6NtL6LVZwTY5+AjZghrq+vOa++kptdF4HHSpvwup4E/bI NQqxv8s6PAXfWBxMQNlWAmmxliMgZ5LdWcH73Y8MYSpFsNEVJrrri6O90cIvf0can7/G +QzJyzVc1RJSN2O8h4vzjmp9y1JkwPIi7UZrJSJozN8u+hO6h8MiEUOTlcD5Cax2tIwr mU9kQshhaRHuxWej1KJJQb4+OKjyFqHsrzM9N8PEMZrmiWI3LGI/98tnMfwUSwywVLCi 3Dzg== X-Gm-Message-State: AAQBX9cuI9kqbq3+PMI6tseepgYhg4Wxxd4ZHe75Sohg9xhGqbGTe5gv 3L7x1MkN0JH2aYtBJmDPwWqc0eQ5K9lVIA== X-Google-Smtp-Source: AKy350anle5fekcfSDTPpaFOciAdChyPE+/RMnJfCpMLBXYaAOVzt1S5VhispkFplPQV7yqKnYU9RA== X-Received: by 2002:a17:903:186:b0:19d:20a:a219 with SMTP id z6-20020a170903018600b0019d020aa219mr5229941plg.66.1681273222785; Tue, 11 Apr 2023 21:20:22 -0700 (PDT) Received: from virtualbox.www.tendawifi.com ([47.96.236.37]) by smtp.gmail.com with ESMTPSA id t13-20020a1709028c8d00b001a19196af48sm10412381plo.64.2023.04.11.21.20.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Apr 2023 21:20:22 -0700 (PDT) From: Yang Bo X-Google-Original-From: Yang Bo To: stable@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, mszeredi@redhat.com, Yang Bo Subject: [PATCH 4/6] fuse: fix attr version comparison in fuse_read_update_size() Date: Wed, 12 Apr 2023 12:19:33 +0800 Message-Id: <20230412041935.1556-5-yb203166@antfin.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230412041935.1556-1-yb203166@antfin.com> References: <20230412041935.1556-1-yb203166@antfin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Miklos Szeredi commit 484ce65715b06aead8c4901f01ca32c5a240bc71 upstream. [backport for 5.10.y] A READ request returning a short count is taken as indication of EOF, and the cached file size is modified accordingly. Fix the attribute version checking to allow for changes to fc->attr_version on other inodes. Signed-off-by: Miklos Szeredi Signed-off-by: Yang Bo --- fs/fuse/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 504389568dac..94fe2c690676 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -782,7 +782,7 @@ static void fuse_read_update_size(struct inode *inode, loff_t size, struct fuse_inode *fi = get_fuse_inode(inode); spin_lock(&fi->lock); - if (attr_ver == fi->attr_version && size < inode->i_size && + if (attr_ver >= fi->attr_version && size < inode->i_size && !test_bit(FUSE_I_SIZE_UNSTABLE, &fi->state)) { fi->attr_version = atomic64_inc_return(&fc->attr_version); i_size_write(inode, size); -- 2.40.0