diff options
| author | Liam R. Howlett <Liam.Howlett@oracle.com> | 2025-06-16 14:45:21 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-09 22:42:12 -0700 |
| commit | ec3681e873132831ba2a9c0de43f2839c9533e94 (patch) | |
| tree | d6388acc9160ca8322ec9778837be909f061eec5 /tools/testing/radix-tree/maple.c | |
| parent | f687fd5af8bf0358259278319f5bc18fc8c547cb (diff) | |
tools/testing/radix-tree: test maple tree chaining mas_preallocate() calls
Testing calling multiple mas_preallocate() calls in a row after adjusting
the maple state. Ensures new calls to mas_preallocate() will change the
number of allocated nodes.
Link: https://lkml.kernel.org/r/20250616184521.3382795-4-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Acked-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Hailong Liu <hailong.liu@oppo.com>
Cc: "Liam R. Howlett" <howlett@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/radix-tree/maple.c')
| -rw-r--r-- | tools/testing/radix-tree/maple.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c index f6f923c9dc10..172700fb7784 100644 --- a/tools/testing/radix-tree/maple.c +++ b/tools/testing/radix-tree/maple.c @@ -35669,6 +35669,18 @@ static noinline void __init check_prealloc(struct maple_tree *mt) allocated = mas_allocated(&mas); height = mas_mt_height(&mas); MT_BUG_ON(mt, allocated != 0); + + /* Chaining multiple preallocations */ + mt_set_in_rcu(mt); + mas_set_range(&mas, 800, 805); /* Slot store, should be 0 allocations */ + MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0); + allocated = mas_allocated(&mas); + MT_BUG_ON(mt, allocated != 0); + mas.last = 809; /* Node store */ + MT_BUG_ON(mt, mas_preallocate(&mas, ptr, GFP_KERNEL) != 0); + allocated = mas_allocated(&mas); + MT_BUG_ON(mt, allocated != 1); + mas_store_prealloc(&mas, ptr); } /* End of preallocation testing */ |