From patchwork Wed Jan 18 09:43:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13106079 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 52B0FC004D4 for ; Wed, 18 Jan 2023 10:40:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229883AbjARKkt (ORCPT ); Wed, 18 Jan 2023 05:40:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229849AbjARKkQ (ORCPT ); Wed, 18 Jan 2023 05:40:16 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 81EC1C4EB8; Wed, 18 Jan 2023 01:44:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=ewY31mbHxOfBtCPdgdKzYjQ0wPkqac5AmSjDkb40tFw=; b=mSCDCWinUY/HS19oiHLIYU7HTJ xzmM8Qtfxh3HIuymTISooTmX6MPgoflOa0QEqARdl58+fsr8DnAM2OmWVtGDhwxK56ZTcXRoTQBYc N7fS0PP9RlpPUqBe8Z+JfSMNivMFeCH8O7mEix/D9DJC2FhilwruTYNIfFp2CAtuxiaCqX8cB8ypc i6fXmBJvEW6wRvYpqVZjOFWDrJdIQ7/z/dJm65mWiD83UIjIo8LqP0ZpBFAIe1yPaI115hKSn+ooa r/wDnRGHqtfS0o2zlJoQ8uewHgGSm9sJ9WvQUpk1dqyVo0wKkPBdMHEn+BtUTrCt3neypSrdkLX+J OaMKoOxQ==; Received: from 213-147-167-250.nat.highway.webapn.at ([213.147.167.250] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1pI4zN-000ABI-Gv; Wed, 18 Jan 2023 09:44:14 +0000 From: Christoph Hellwig To: Andrew Morton , Matthew Wilcox , Hugh Dickins Cc: linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, cluster-devel@redhat.com, linux-mm@kvack.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-nilfs@vger.kernel.org Subject: [PATCH 8/9] btrfs: handle a NULL folio in extent_range_redirty_for_io Date: Wed, 18 Jan 2023 10:43:28 +0100 Message-Id: <20230118094329.9553-9-hch@lst.de> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230118094329.9553-1-hch@lst.de> References: <20230118094329.9553-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org filemap_get_folio can return NULL, skip those cases. Signed-off-by: Christoph Hellwig --- fs/btrfs/extent_io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index d55e4531ffd212..a54d2cf74ba020 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -230,6 +230,8 @@ void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end) while (index <= end_index) { folio = filemap_get_folio(mapping, index); + if (!folio) + continue; filemap_dirty_folio(mapping, folio); folio_account_redirty(folio); index += folio_nr_pages(folio);