Ready for 4.11

Removed trailing white space at end of lines

_exit.2, alarm.2, chmod.2, clone.2, epoll_ctl.2, fcntl.2, fork.2, fsync.2, getdents.2, getpid.2, ioctl.2, ioctl_console.2, ioctl_list.2, ioctl_ns.2, ioctl_tty.2, ioctl_userfaultfd.2, kexec_load.2, lseek.2, mincore.2, mkdir.2, mknod.2, mmap.2, open.2, poll.2, posix_fadvise.2, prctl.2, rename.2, sched_setaffinity.2, select.2, select_tut.2, sigaction.2, signalfd.2, sigprocmask.2, sigwaitinfo.2, socketcall.2, stat.2, statx.2, syscalls.2, truncate.2, umask.2, unshare.2, userfaultfd.2, utime.2, utimensat.2, wait.2, bzero.3, cfree.3, exit.3, getentropy.3, grantpt.3, insque.3, shm_open.3, syslog.3, termios.3, ttyname.3, wcsdup.3, console_codes.4, tty.4, vcs.4, elf.5, nsswitch.conf.5, proc.5, slabinfo.5, tmpfs.5, bootparam.7, environ.7, hostname.7, inotify.7, mailaddr.7, man-pages.7, namespaces.7, pid_namespaces.7, pthreads.7, pty.7, sem_overview.7, signal.7, socket.7, tcp.7, termio.7, user_namespaces.7, xattr.7, ld.so.8, zdump.8: tstamp

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

Changes: Ready for 4.11

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

user_namespaces.7: Fixes to example

While toying around with the userns_child_exec example program on the
user_namespaces(7) man page, I noticed two things:

* In the EXAMPLE section, we need to mount the new /proc before
  looking at /proc/$$/status, otherwise the latter will print
  information about the outer namespace's PID 1 (i.e., the real
  init).  So the two paragraphs need to be swapped.

* In the program source, make sure to close pipe_fd[0] in the
  child before exec'ing.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ld.so.8: Mention ldconfig(8) in discussion of /etc/ld.so.cache

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ld.so.8: Expand description of /etc/ld.so.preload

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ld.so.8: Mention quoting when using "Rpath tokens" in LD_AUDIT and LD_PRELOAD

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tcp.7: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tcp.7: tcp_abc was removed in 3.9

Signed-off-by: Chema Gonzalez <chema@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ld.so.8: Minor wording fix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ld.so.8: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ulimit.3: tfix

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

socket.2, ip.7: tfix

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_console.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_console.2: tfix

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

elf.5: SEE ALSO: add elfedit(1), nm(1), size(1), strings(1), and strip(1)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ldconfig.8: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

sem_overview.7: SEE ALSO: add shm_overview(7)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Add a few details on UFFD_EVENT_FORK

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Minor tweaks to Mike Rapoport's patches

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Minor tweaks to Mike Rapoport's patches

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Update VERSIONS section with 4.11 changes

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Add note about asynchronous event delivery

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Add BUGS section

The features handshake is not quite convenient.
Elaborate about it in the BUGS section.

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: UFFDIO_COPY: add ENOENT and ENOSPC description

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Update description of shared memory areas

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

syscalls.2: Update kernel version number

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

syscalls.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

signal.7: SEE ALSO: add sigreturn(2)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

inode.7: tfix

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

slabinfo.5: tfix

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: tfix

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: tfix

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ldconfig.8: ffix

Use italics for metavariables.

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

Changes.old: tfix

Reported-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Minor fixes to Mike Rapoport's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Start adding details about userfaultfd features

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Minor tweaks to Mike Rapoport's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Add kernel version numbers for UFFD_EVENT_* flags

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Start documenting non-cooperative events

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getentropy.3: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

stat.2: Give 'struct stat' argument a more meaningful name ('statbuf')

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: Give final argument of call a more meaningful name ('statxbuf')

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: ERRORS: better description for EFAULT

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: Remove mention of pathname == NULL case

Kernel commit 1e2f82d1e9d12223b4cbd1feb3f2b5596f8049eb
removed the option to specify 'pathname' as NULL, since
this was redundant with AT_EMPTY_PATH + pathname == "".

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

vfork.2: spfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: Minor fixes after notes from David Howells

Reported-by: David Howells <dhowells@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: Add stx_ino to list of structure feilds

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: Reorder the list of structure fields to match the structure definition

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: Fixes from David Howells

Reported-by: David Howells <dhowells@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

hostname.7, mailaddr.7: Use generic names in examples

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

inotify.7: Mounting a filesystem on top of a monitored directory causes no event

Reported-by: Nicolas Iooss <Nicolas.Iooss@ssi.gouv.fr>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Minor fix-ups

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

usefaultfd.2: Add brief description of "non-cooperative" mode

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Add Linux container migration use-case to NOTES

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Minor fix-ups to Mike Rapoport's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Update UFFDIO_API description

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Describe memory types that can be used from 4.11

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Describe memory types that can be used from 4.11

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: 'tv_nsec' is nanoseconds *since* 'tv_sec'

Reported-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: Minor fixes

Reported-by: Silvan Jegen <s.jegen@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

mincore.2: SEE ALSO: add fincore(1)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

posix_fadvise.2: SEE ALSO: add fincore(1)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ld.so.8: tfix: nonstandard API name in NAME section

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

hostname.7: Describe accepted characters for hostname

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

hostname.7: Use lower case for hostname example

I think upper-casing hostnames was a thing of the 90s.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: tfix

Signed-off-by: Andrew Clayton <andrew@digital-domain.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

stat.2: tfix

Signed-off-by: Andrew Clayton <andrew@digital-domain.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statx.2: srcfix: FIXME

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Drop some unneeded text

From a conversation with Mike Rapoport:

What does "consistent" mean?
    Actually, I though I've copied this text from Andrea's docs,
    but now I've found out it was my wording and I really don't
    remember now what was my intention for "consistent" :) My
    guess is that I was thinking about atomicity of UFFDIO_COPY,
    or the fact that from the faulting thread perspective the
    page fault handling is the same whether it's done in kernel
    or via userfaultfd...  That said, maybe it'd be better just
    to drop "in a consistent way".

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: srcfix: remove obsolete FIXME

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Explain the use case for UFFDIO_WAKE

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Note that UFFDIO_UNREGISTER address range must be compatible

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Explain concept of "compatible" mapping for UFFDIO_REGISTER

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Add EFAULT errors

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: srcfix: Remove FIXME

According to Mike Rapoport the description of the 'ioctls'
field is accurate.

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Clarify the 'features' field usage for UFFDIO_API

Mike Rapoport notes that changes are coming in Linux 4.11.

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Describe close() semantics for userfaultfd

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Note that O_NONBLOCK flag is required for poll() etc.

And better word the associated FIXME.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: srcfix: remove a FIXME

According to Mike Rapoport, the details are correct,
"at least for the current upstream version. 4.11 will
have quite a few updates to userfaultfd."

Reported-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: srcfix: Improve FIXMEs

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: srcfix: improve FIXMEs

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: wsfix

Signed-off-by: Michael Kerrisk <mtk@man7.org>

userfaultfd.2: Mention some use cases

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: SEE ALSO: add madvise(2)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Add comments to structure definitions

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioctl_userfaultfd.2: Add pointer to EXAMPLE in userfaultfd(2)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Add an example program

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Add a header file to the SYNOPSIS

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: srcfix: FIXME

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Describe errors for read() on userfaultfd

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>