man-pages-4.09 is released

I've released man-pages-4.09. The release tarball is available on kernel.org. The browsable online pages can be found on man7.org. The Git repository for man-pages is available on kernel.org.

This release resulted from patches, bug reports, reviews, and comments from 44 contributors. This is one of the more substantial releases in recent times, with more than 500 commits changing around 190 pages. The changes include the addition of eight new pages and significant enhancements or rewrites to many existing pages.

Among the more significant changes in man-pages-4.09 are the following:

• A new pkey_alloc(2) page, written  by Dave Hansen, documents the pkey_alloc() and pkey_free() system calls added in Linux 4.9.
• Updates to the mprotect(2) page by Dave Hansen document the pkey_mprotect() system call added in Linux 4.9.
• A new pkeys(7) page, written  by Dave Hansen, provides an overview of the Memory Protection Keys feature added in Linux 4.9.
• A new pthread_getattr_default_np(3) page, written by me, documents the pthread_getattr_default_np(3) and pthread_setattr_default_np(3) library functions.
• A new strfromd(3) page, written by Wainer dos Santos Moschetta, documents the strfromd(3), strfromf(3), and strfroml(3) library functions added in the upcoming GNU C Library 2.25 release.
• A new fuse(4) page, written by Keno Fischer, partially documents the /dev/fuse device.
• A new tmpfs(5) page, written by me, provides an overview of the tmpfs filesystem.
• A new random(7) page, written by me, with help from Nikos Mavrogiannopoulos, Laurent Georget, and Ted T'so, provides an overview of the interfaces for obtaining randomness.
• A new sock_diag(7) page, written by Pavel Emelyanov and Dmitry V. Levin, documents the NETLINK_SOCK_DIAG interface.
• Updates to the namespaces(7) page, written by me, document the NS_GET_USERNS and NS_GET_PARENT ioctl() operations (added In Linux 4.9) that can be used for introspecting namespace relationships (discovering hierarchical relationships of user and PID namespaces, and the relationships of non-user namespaces with their associated user namespaces).
• Updates to the sched(7) page, written by me, document the autogroup feature added to the CFS scheduler in Linux 2.6.38 and describe how it renders the nice value ineffective in many use cases.
• Substantial updates to the elf(5) page, by Mike Frysinger, document ELF notes.
• Yet another slew of updates to the perf_event_open(2) page were provided by Vince Weaver.

In addition to the above, substantial changes were also made to the close(2), getpriority(2), nice(2), timer_create(2), timerfd_create(2), random(4), and proc(5) pages.