On Sat, Oct 19, 2024 at 02:37:11AM +0000, Wei Yang wrote: >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. Forget to say, this is still based on yesterday's master. 4d939780b705 2024-10-17 Merge tag 'mm-hotfixes-stable-2024-10-17-16-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm > >[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 -- Wei Yang Help you, Help me
