The original thread[1] thoughts it is a problem in mas_new_root(). But after
discussion, this should be an improvement on storing NULL.
Patch 1/2 preparation for refine.
Patch 3 remove redundant check in mas_new_root().
Patch 4 refine mas_store_root() to improve memory efficiency and remove
possible consecutive NULL slot.
Patch 5 adds a test for storing NULL.
[1]: https://lkml.kernel.org/r/20241015233909.23592-1-richard.weiyang@xxxxxxxxx
v4:
patch 3 add a WARN_ON_ONCE()
patch 4 add a comment and simplify the logic a little
v3:
patch 4 move the change into mas_store_root()
patch 5 move test into lib/test_maple_tree.c
Wei Yang (5):
maple_tree: print empty for an empty tree on mt_dump()
maple_tree: the return value of mas_root_expand() is not used
maple_tree: not necessary to check index/last again
maple_tree: refine mas_store_root() on storing NULL
maple_tree: add a test checking storing null
lib/maple_tree.c | 29 ++++++++++----
lib/test_maple_tree.c | 90 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 112 insertions(+), 7 deletions(-)
--
2.34.1
