[$] Splicing out vmsplice()

Post Syndicated from corbet original https://lwn.net/Articles/1075838/

The splice()
and vmsplice()
system calls are meant to improve performance for certain data-movement
tasks by minimizing (or avoiding altogether) system calls and the copying
of data. They also have a long history of security problems. The recent
flood of LLM-discovered vulnerabilities has drawn attention, once again, to
splice() and vmsplice(); as a result, they may end up
being removed altogether.