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| author | Liam Howlett <liam.howlett@oracle.com> | 2022-12-19 16:20:15 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-21 14:31:52 -0800 |
| commit | c5651b31f51584bd1199b3a552c8211a8523d6e1 (patch) | |
| tree | 9958d5bee4a43c3f22847ce286525b3c424736f7 /lib/test_maple_tree.c | |
| parent | 0abb964aae3da746ea2fd4301599a6fa26da58db (diff) | |
| download | lwn-c5651b31f51584bd1199b3a552c8211a8523d6e1.tar.gz lwn-c5651b31f51584bd1199b3a552c8211a8523d6e1.zip | |
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 <Liam.Howlett@oracle.com>
Cc: Andrei Vagin <avagin@gmail.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/test_maple_tree.c')
| -rw-r--r-- | lib/test_maple_tree.c | 23 |
1 files changed, 23 insertions, 0 deletions
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 |