From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Mon, 1 Jul 2019 23:54:25 +0200 Subject: [Cluster-devel] [PATCH 01/15] FOLD: iomap: make the discard_page method optional In-Reply-To: <20190701215439.19162-1-hch@lst.de> References: <20190701215439.19162-1-hch@lst.de> Message-ID: <20190701215439.19162-2-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 For file system that do not support delayed allocations there is nothing to discard here, so don't require them to implement the method. Signed-off-by: Christoph Hellwig --- fs/iomap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/iomap.c b/fs/iomap.c index 72ba3962acf3..ebfff663b2a9 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -2545,7 +2545,8 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, */ if (unlikely(error)) { if (!count) { - wpc->ops->discard_page(page); + if (wpc->ops->discard_page) + wpc->ops->discard_page(page); ClearPageUptodate(page); unlock_page(page); goto done; -- 2.20.1