From c5651b31f51584bd1199b3a552c8211a8523d6e1 Mon Sep 17 00:00:00 2001 From: Liam Howlett Date: Mon, 19 Dec 2022 16:20:15 +0000 Subject: test_maple_tree: add test for mas_spanning_rebalance() on insufficient data Add a test to the maple tree test suite for the spanning rebalance insufficient node issue does not go undetected again. Link: https://lkml.kernel.org/r/20221219161922.2708732-3-Liam.Howlett@oracle.com Fixes: 54a611b60590 ("Maple Tree: add new data structure") Signed-off-by: Liam R. Howlett Cc: Andrei Vagin Cc: Mike Rapoport Cc: Muhammad Usama Anjum Cc: Signed-off-by: Andrew Morton --- lib/test_maple_tree.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'lib') diff --git a/lib/test_maple_tree.c b/lib/test_maple_tree.c index f425f169ef08..497fc93ccf9e 100644 --- a/lib/test_maple_tree.c +++ b/lib/test_maple_tree.c @@ -2498,6 +2498,25 @@ static noinline void check_dup(struct maple_tree *mt) } } +static noinline void check_bnode_min_spanning(struct maple_tree *mt) +{ + int i = 50; + MA_STATE(mas, mt, 0, 0); + + mt_set_non_kernel(9999); + mas_lock(&mas); + do { + mas_set_range(&mas, i*10, i*10+9); + mas_store(&mas, check_bnode_min_spanning); + } while (i--); + + mas_set_range(&mas, 240, 509); + mas_store(&mas, NULL); + mas_unlock(&mas); + mas_destroy(&mas); + mt_set_non_kernel(0); +} + static DEFINE_MTREE(tree); static int maple_tree_seed(void) { @@ -2742,6 +2761,10 @@ static int maple_tree_seed(void) check_dup(&tree); mtree_destroy(&tree); + mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE); + check_bnode_min_spanning(&tree); + mtree_destroy(&tree); + #if defined(BENCH) skip: #endif -- cgit v1.2.3