diff options
Diffstat (limited to 'lib/test_maple_tree.c')
| -rw-r--r-- | lib/test_maple_tree.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/test_maple_tree.c b/lib/test_maple_tree.c index 13e2a10d7554..cb3936595b0d 100644 --- a/lib/test_maple_tree.c +++ b/lib/test_maple_tree.c @@ -3177,6 +3177,7 @@ static noinline void __init check_state_handling(struct maple_tree *mt) void *entry, *ptr = (void *) 0x1234500; void *ptr2 = &ptr; void *ptr3 = &ptr2; + unsigned long index; /* Check MAS_ROOT First */ mtree_store_range(mt, 0, 0, ptr, GFP_KERNEL); @@ -3707,6 +3708,37 @@ static noinline void __init check_state_handling(struct maple_tree *mt) MT_BUG_ON(mt, !mas_is_active(&mas)); mas_unlock(&mas); + mtree_destroy(mt); + + mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE); + mas_lock(&mas); + for (int count = 0; count < 30; count++) { + mas_set(&mas, count); + mas_store_gfp(&mas, xa_mk_value(count), GFP_KERNEL); + } + + /* Ensure mas_find works with MA_UNDERFLOW */ + mas_set(&mas, 0); + entry = mas_walk(&mas); + mas_set(&mas, 0); + mas_prev(&mas, 0); + MT_BUG_ON(mt, mas.status != ma_underflow); + MT_BUG_ON(mt, mas_find(&mas, ULONG_MAX) != entry); + + /* Restore active on mas_next */ + entry = mas_next(&mas, ULONG_MAX); + index = mas.index; + mas_prev(&mas, index); + MT_BUG_ON(mt, mas.status != ma_underflow); + MT_BUG_ON(mt, mas_next(&mas, ULONG_MAX) != entry); + + /* Ensure overflow -> active works */ + mas_prev(&mas, 0); + mas_next(&mas, index - 1); + MT_BUG_ON(mt, mas.status != ma_overflow); + MT_BUG_ON(mt, mas_next(&mas, ULONG_MAX) != entry); + + mas_unlock(&mas); } static noinline void __init alloc_cyclic_testing(struct maple_tree *mt) |