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Explore the challenges and potential solutions for addressing mmap_sem contention in large-scale systems during this Linux Plumbers Conference talk. Delve into the complexities of managing memory layouts shared by thousands of CPU threads and examine various attempts to mitigate or eliminate mmap_sem contention. Learn about emerging solutions, including split lock mechanisms and the potential use of Maple Trees to replace VMA data structures. Gain insights into the intricacies of VMA access, locking rules, and the challenges of updating VMA locking in modern computing environments.
