The 5.15 kernel has been released

Linus has released the 5.15 kernel afteranother nine-week development cycle.

This release may have started out with some -Werror pain, but itcalmed down fairly quickly and on the whole 5.15 was fair small andcalm. Let's hope for more of the same - without Werror issues thistime - for the upcoming merge window.

The code name for this release has been set to "Trick or Treat".

Significant features in this release include:the realtimepreemption locking code,descriptorless files for io_uring,BPF timers,the removal of mandatory file-locking support,the ksmbd SMB filesystem server (but see thisarticle),printk() indexing,the process_mrelease() systemcall,The DAMON memory-management optimizationsystem,the ntfs3 filesystem implementation,and much more. See theKernelNewbies 5.15 page for more information.