From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig 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> References: <20230118094329.9553-1-hch@lst.de> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674035082; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=ewY31mbHxOfBtCPdgdKzYjQ0wPkqac5AmSjDkb40tFw=; b=SJ/dqckx6OAh048oUTAM7+JFXz9jqPF0H56MuIr37nBkAbGhqUMM9xSABBlxd9hYHxfqEV anE3/6b31FDszsnXvlWBUZfmOq40nQ6eJwor/rB/e9X7XMDZk3UUWd+hTramgIYgPDKOnh Dz2iUWiuV8QJGUfZzVtKMk5NEUuMNYc= In-Reply-To: <20230118094329.9553-1-hch@lst.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: cluster-devel-bounces@redhat.com Sender: "Cluster-devel" Content-Type: text/plain; charset="us-ascii"; x-default="true" To: Andrew Morton , Matthew Wilcox , Hugh Dickins Cc: linux-xfs@vger.kernel.org, linux-nilfs@vger.kernel.org, cluster-devel@redhat.com, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@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); -- 2.39.0