Commit 7dc5ba62 authored by Liam Howlett's avatar Liam Howlett Committed by Andrew Morton
Browse files

maple_tree: don't set a new maximum on the node when not reusing nodes 

In RCU mode, the node limits were being updated to the last pivot which
may not be correct and would cause the metadata to be set when it
shouldn't.  Fix this by not setting a new limit in this case.

Link: https://lkml.kernel.org/r/20221107163857.867377-1-Liam.Howlett@oracle.com


Signed-off-by: default avatarLiam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 9bbba563

lib/maple_tree.c

+1 −2
Original line number Diff line number Diff line
@@ -3603,8 +3603,7 @@ static inline int mas_commit_b_node(struct ma_wr_state *wr_mas, 
	node = mas_pop_node(wr_mas->mas);

	node->parent = mas_mn(wr_mas->mas)->parent;

	wr_mas->mas->node = mt_mk_node(node, b_type);

	mab_mas_cp(b_node, 0, b_end, wr_mas->mas, true);



	mab_mas_cp(b_node, 0, b_end, wr_mas->mas, false);

	mas_replace(wr_mas->mas, false);

reuse_node:

	mas_update_gap(wr_mas->mas);