There were 16,418 non-merge commits brought into the mainline for the 7.2 release, exceeding the (already busy) 7.1 release; it is, in fact, the second-busiest release in the kernel's history. Only the 6.7 release brought in more commits but, while 6.7 was dominated by the merging of the bcachefs development history, the volume for 7.2 is more broad-based.
(This plot, like much of the information here, comes from the subscriber-only LWN Kernel Source Database). There has been a clear trend over that entire history: the number of developers contributing to each release increases over time. But the slope of that line has clearly changed.
Uwe Kleine-König [KSDB] was the biggest contributor of commits to the 7.2 release with cleanups through the driver subsystem. Rosen Penev [KSDB] contributed a long list of LLM-authored bug fixes throughout the architecture-specific, driver, networking, and crypto subsystems, among others. Ian Rogers [KSDB] worked extensively on the user-space perf tool, as did Arnaldo Carvalho de Melo [KSDB]. Johan Hovold [KSDB] made numerous improvements, mostly in the SPI and USB subsystems.
