Currently xfs_flush_unmap_range() does a flush for full FS blocks. Extend
this to cover full RT extents so that any range overlap with start/end of
the modification are clean and idle.
This code change is originally from Dave Chinner.
Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx>
---
fs/xfs/xfs_bmap_util.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 2e6f08198c07..da67c52d5f94 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -802,12 +802,16 @@ xfs_flush_unmap_range(
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);
+ /*
+ * 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 = round_down(offset, rounding);
end = round_up(offset + len, rounding) - 1;
--
2.31.1
