From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Wed, 18 Jan 2023 10:43:28 +0100 Subject: [Cluster-devel] [PATCH 8/9] btrfs: handle a NULL folio in extent_range_redirty_for_io In-Reply-To: <20230118094329.9553-1-hch@lst.de> References: <20230118094329.9553-1-hch@lst.de> Message-ID: <20230118094329.9553-9-hch@lst.de> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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