[$] Improving page-fault scalability

Certain topics return predictably to development conferences every year,usually because developers are still struggling to find a viable solutionto a specific problem. One such topic is the lack of scalability in thekernel's page-fault-handling code, so it was no surprise to see thisproblem on the agenda for the 2023 LinuxStorage, Filesystem, Memory-Management and BPF Summit. Matthew Wilcoxled a session in the memory-management track to discuss the state ofpage-fault handling and what can be done to improve it further.