From fc258f4b8bb578c39223ff572b4dec8d56a2ed81 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 9 Nov 2017 09:11:41 -0800 Subject: [PATCH] xfs: add some comments to xfs_iext_insert/xfs_iext_insert_node Reported-by: Brian Foster Signed-off-by: Christoph Hellwig Reviewed-by: Brian Foster Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_iext_tree.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/xfs/libxfs/xfs_iext_tree.c b/fs/xfs/libxfs/xfs_iext_tree.c index 85d7f70..c28a24a 100644 --- a/fs/xfs/libxfs/xfs_iext_tree.c +++ b/fs/xfs/libxfs/xfs_iext_tree.c @@ -525,6 +525,10 @@ again: if (nr_entries == KEYS_PER_NODE) new = xfs_iext_split_node(&node, &pos, &nr_entries); + /* + * Update the pointers in higher levels if the first entry changes + * in an existing node. + */ if (node != new && pos == 0 && nr_entries > 0) xfs_iext_update_node(ifp, node->keys[0], offset, level, node); @@ -643,6 +647,10 @@ xfs_iext_insert( if (nr_entries == RECS_PER_LEAF) new = xfs_iext_split_leaf(cur, &nr_entries); + /* + * Update the pointers in higher levels if the first entry changes + * in an existing node. + */ if (cur->leaf != new && cur->pos == 0 && nr_entries > 0) { xfs_iext_update_node(ifp, xfs_iext_leaf_key(cur->leaf, 0), offset, 1, cur->leaf); -- 2.7.4