On Tue, 15 Feb 2022 14:37:44 +0000 Liam Howlett <liam.howlett@xxxxxxxxxx> wrote: > The maple tree is an RCU-safe range based B-tree designed to use modern > processor cache efficiently. There are a number of places in the kernel > that a non-overlapping range-based tree would be beneficial, especially > one with a simple interface. The first user that is covered in this > patch set is the vm_area_struct, where three data structures are > replaced by the maple tree: the augmented rbtree, the vma cache, and the > linked list of VMAs in the mm_struct. The long term goal is to reduce > or remove the mmap_sem contention. Has a path been chosen which gets us from here to significant reduction in mmap_lock overhead? If so, what's the plan and what must be done? Thanks.
