* doc/glibc-functions/preadv2.texi: New file.
* doc/glibc-functions/pwritev2.texi: New file.
* doc/gnulib.texi (Glibc sys/uio.h): Include them.
--- /dev/null
+@node preadv2
+@subsection @code{preadv2}
+@findex preadv2
+
+Documentation:
+@itemize
+@item
+@ifinfo
+@ref{Scatter-Gather,,Fast Scatter-Gather I/O,libc},
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Scatter_002dGather.html},
+@end ifnotinfo
+@item
+@uref{https://www.kernel.org/doc/man-pages/online/pages/man2/preadv2.2.html,,man preadv2}.
+@end itemize
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on many non-glibc platforms:
+glibc 2.25, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
--- /dev/null
+@node pwritev2
+@subsection @code{pwritev2}
+@findex pwritev2
+
+Documentation:
+@itemize
+@item
+@ifinfo
+@ref{Scatter-Gather,,Fast Scatter-Gather I/O,libc},
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Scatter_002dGather.html},
+@end ifnotinfo
+@item
+@uref{https://www.kernel.org/doc/man-pages/online/pages/man2/pwritev2.2.html,,man pwritev2}.
+@end itemize
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on many non-glibc platforms:
+glibc 2.25, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
@menu
* preadv::
+* preadv2::
* process_vm_readv::
* process_vm_writev::
* pwritev::
+* pwritev2::
@end menu
@include glibc-functions/preadv.texi
+@include glibc-functions/preadv2.texi
@include glibc-functions/process_vm_readv.texi
@include glibc-functions/process_vm_writev.texi
@include glibc-functions/pwritev.texi
+@include glibc-functions/pwritev2.texi
@c @node Glibc sys/un.h
@c @section Glibc Extensions to @code{<sys/un.h>}