From patchwork Fri Jul 16 15:00:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 12382389 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 ABF82C12002 for ; Fri, 16 Jul 2021 15:02:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8E05D6128C for ; Fri, 16 Jul 2021 15:02:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236986AbhGPPFg (ORCPT ); Fri, 16 Jul 2021 11:05:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232861AbhGPPFf (ORCPT ); Fri, 16 Jul 2021 11:05:35 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2884C06175F; Fri, 16 Jul 2021 08:02:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=qu55q+Wr3c7nhfV+FWSDuP1bQTjuk+H0uzhdHS2+IkU=; b=MQxqwRDBGj/PAKh/l7fZFZzlSh 1UZ0IMYIjMZueoCINAu+PJtkqnKREZjdnohgCGsI/PAC/B2ueDFZICpqBtq6LLBNpY6Xdo8T8IUW4 /2GrIOUfDX9stzRA2FD4N8x4WR4EM+X03WV73VhDG883Q8u/ZoG9Pm/OEfZ4wJwDOKtCt5U1q4rj4 lDuIai9pXCpu8KlGHtewBCl+kkXv34wNUJeh4n3lM5B9QPzGA7xeiRoFyvleHRsWKKmvjjLF0bVpx 1xXWh8SesJtPYfVs1vy3z+hOQbw2PA5FpoynPThmdEVFNZBe72hE0sgdh2+9hXjUpimUBjB181Dhb wcWaZzrg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m4PKO-004ZZS-U6; Fri, 16 Jul 2021 15:01:09 +0000 From: "Matthew Wilcox (Oracle)" To: Andreas Gruenbacher , Christoph Hellwig , "Darrick J . Wong" Cc: "Matthew Wilcox (Oracle)" , linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, Gao Xiang , linux-erofs@lists.ozlabs.org, stable@vger.kernel.org Subject: [PATCH] iomap: Add missing flush_dcache_page Date: Fri, 16 Jul 2021 16:00:32 +0100 Message-Id: <20210716150032.1089982-1-willy@infradead.org> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Inline data needs to be flushed from the kernel's view of a page before it's mapped by userspace. Cc: stable@vger.kernel.org Fixes: 19e0c58f6552 ("iomap: generic inline data handling") Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Gao Xiang --- fs/iomap/buffered-io.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 41da4f14c00b..fe60c603f4ca 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -222,6 +222,7 @@ iomap_read_inline_data(struct inode *inode, struct page *page, memcpy(addr, iomap->inline_data, size); memset(addr + size, 0, PAGE_SIZE - size); kunmap_atomic(addr); + flush_dcache_page(page); SetPageUptodate(page); }