From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ipmail07.adl2.internode.on.net ([150.101.137.131]:55865 "EHLO ipmail07.adl2.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729428AbeKTHa5 (ORCPT ); Tue, 20 Nov 2018 02:30:57 -0500 Received: from discord.disaster.area ([192.168.1.111]) by dastard with esmtp (Exim 4.80) (envelope-from ) id 1gOqj7-0000XR-3J for linux-xfs@vger.kernel.org; Tue, 20 Nov 2018 08:05:01 +1100 Received: from dave by discord.disaster.area with local (Exim 4.91) (envelope-from ) id 1gOqj7-0002G2-22 for linux-xfs@vger.kernel.org; Tue, 20 Nov 2018 08:05:01 +1100 From: Dave Chinner Subject: [PATCH 5/7] xfs: extent shifting doesn't fully invalidate page cache Date: Tue, 20 Nov 2018 08:04:57 +1100 Message-Id: <20181119210459.8506-6-david@fromorbit.com> In-Reply-To: <20181119210459.8506-1-david@fromorbit.com> References: <20181119210459.8506-1-david@fromorbit.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org From: Dave Chinner The extent shifting code uses a flush and invalidate mechainsm prior to shifting extents around. This is similar to what xfs_free_file_space() does, but it doesn't take into account things like page cache vs block size differences, and it will fail if there is a page that it currently busy. xfs_flush_unmap_range() handles all of these cases, so just convert xfs_prepare_shift() to us that mechanism rather than having it's own special sauce. Signed-off-by: Dave Chinner --- fs/xfs/xfs_bmap_util.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 5d263dfdb3bc..167ff4297e5c 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1195,13 +1195,7 @@ xfs_prepare_shift( * Writeback and invalidate cache for the remainder of the file as we're * about to shift down every extent from offset to EOF. */ - error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, offset, -1); - if (error) - return error; - error = invalidate_inode_pages2_range(VFS_I(ip)->i_mapping, - offset >> PAGE_SHIFT, -1); - if (error) - return error; + error = xfs_flush_unmap_range(ip, offset, XFS_ISIZE(ip)); /* * Clean out anything hanging around in the cow fork now that -- 2.19.1