From: John Garry john.g.garry@oracle.com
[ Upstream commit d3b689d7c711a9f36d3e48db9eaa75784a892f4c ]
Currently xfs_flush_unmap_range() does unmap for a full RT extent range, which we also want to ensure is clean and idle.
This code change is originally from Dave Chinner.
Reviewed-by: Christoph Hellwig hch@lst.de4 Reviewed-by: Darrick J. Wong djwong@kernel.org Signed-off-by: John Garry john.g.garry@oracle.com Signed-off-by: Chandan Babu R chandanbabu@kernel.org Signed-off-by: Leah Rumancik leah.rumancik@gmail.com Acked-by: "Darrick J. Wong" djwong@kernel.org --- fs/xfs/xfs_bmap_util.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 62b92e92a685..dabae6323c50 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -961,18 +961,22 @@ int xfs_flush_unmap_range( struct xfs_inode *ip, xfs_off_t offset, xfs_off_t len) { - struct xfs_mount *mp = ip->i_mount; struct inode *inode = VFS_I(ip); xfs_off_t rounding, start, end; int error;
- rounding = max_t(xfs_off_t, mp->m_sb.sb_blocksize, PAGE_SIZE); - start = round_down(offset, rounding); - end = round_up(offset + len, rounding) - 1; + /* + * Make sure we extend the flush out to extent alignment + * boundaries so any extent range overlapping the start/end + * of the modification we are about to do is clean and idle. + */ + rounding = max_t(xfs_off_t, xfs_inode_alloc_unitsize(ip), PAGE_SIZE); + start = rounddown_64(offset, rounding); + end = roundup_64(offset + len, rounding) - 1;
error = filemap_write_and_wait_range(inode->i_mapping, start, end); if (error) return error; truncate_pagecache_range(inode, start, end);