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 J0O/4sNH 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overwriting the whole range on a ^^^^^- stale value. I thought you were saying it was stalling which did not make sense. > maple tree with only root node. The reason is we didn't set the only > root node dead during destroy. > > Add a test case to verify this is not recreated. > > Signed-off-by: Wei Yang > CC: Liam R. Howlett > --- > tools/testing/radix-tree/maple.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c > index bc30050227fd..1e293e4d856d 100644 > --- a/tools/testing/radix-tree/maple.c > +++ b/tools/testing/radix-tree/maple.c > @@ -35256,6 +35256,30 @@ static noinline void __init check_rcu_simulated(struct maple_tree *mt) > MT_BUG_ON(mt, mas_prev(&mas_reader, 0) != xa_mk_value(val)); > rcu_read_unlock(); > > + /* Clear out tree & create one with only root node */ > + mas_lock(&mas_writer); > + mas_set_range(&mas_writer, 0, ULONG_MAX); > + mas_store_gfp(&mas_writer, NULL, GFP_KERNEL); > + mas_set_range(&mas_writer, 0, 0); > + for (i = 0; i <= 5; i++) { > + mas_writer.index = i * 10; > + mas_writer.last = i * 10 + 5; > + mas_store_gfp(&mas_writer, xa_mk_value(i), GFP_KERNEL); > + } > + mas_unlock(&mas_writer); > + target = 10; > + mas_set_range(&mas_reader, target, target); > + rcu_read_lock(); > + MT_BUG_ON(mt, mas_walk(&mas_reader) != xa_mk_value(target/10)); > + > + /* Overwrite the whole range */ > + mas_lock(&mas_writer); > + mas_set_range(&mas_writer, 0, ULONG_MAX); > + mas_store_gfp(&mas_writer, xa_mk_value(val), GFP_KERNEL); > + mas_unlock(&mas_writer); > + MT_BUG_ON(mt, mas_walk(&mas_reader) != xa_mk_value(val)); > + rcu_read_unlock(); > + > rcu_unregister_thread(); > } > > -- > 2.34.1 >