--- IO-AIO/Changes	2018/07/31 22:27:49	1.360
+++ IO-AIO/Changes	2022/09/28 08:24:25	1.410
@@ -16,26 +16,148 @@
 http://msdn.microsoft.com/en-us/library/windows/desktop/aa364996%28v=vs.85%29.aspx
 http://msdn.microsoft.com/en-us/library/windows/desktop/aa364994%28v=vs.85%29.aspx
 TODO: extra socket/tcp constants &c?
-TODO: http://lwn.net/Articles/593918/ SHMEM_SET_SEALS, SHMEM_GET_SEALS, SEAL_SHRINK, SEAL_GROW, SEAL_WRITE, int memfd_create(const char *name, u64 size, u64 flags);, MFD_CLOEXEC, int fd = open("/tmp", O_RDWR | O_TMPFILE | O_EXCL, S_IRWXU);
 TODO: name_to_handle_At + open_by_handle_at = clone fds
 TODO: lchown
-TODO: mount/umount2/MS_* flags
+TODO: ioprio_get/set
 
 TODO: rewrite rmtree et al. to support working directories (also speed them up)
 TODO: maybe IO::AIO leaks fds when requests are cancelled? maybe initialise result to -1?
 TODO: aio_wd should use O_PATH on linux, due to lacking O_SEARCH (http://comments.gmane.org/gmane.linux.file-systems/33611)
       http://www.openwall.com/lists/musl/2013/02/23/4
-TODO: maybe copy some hacks from PerlIOStdio_invalidate_fileno for faster close on certain platforms
-TODO: copy_file_range, copy_file_range
 TODO: FIDEDUPERANGE, file_ioctl.c
 TODO: mincore
 TODO: SOCK_CLOEXEc etc.
-TODO: unlinkat flags, linkat flags, statat flags
+TODO: unlinkat flags, linkat flags, statat, renameat2 flags
 TODO: https://kernelnewbies.org/Linux_4.11
 TODO: define useful rules for [[$wd, $path], $path] &c and implement them
 TODO: https://github.com/coreutils/coreutils/blob/master/src/stat.c maybe IO::AIO::FSID
 TODO: mlock2, MLOCK_ONFAULT
 TODO: dup3, pipe2, accept4
+TODO: dump config.log when automated testign and configure fails
+TODO: ns time resolution in utime
+TODO: statx
+TODO: aio_fchdir/chdir? emulate chdirat?
+TODO: rt-4.0.18-20109-1573826674-1229.126277-5-0@rt.cpan.org
+TODO: aio_splice, aio_tee
+TODO: copy_file_range
+TODO: write more abpout the thread model, maybe bump some defaults?
+TODO: io_uring, but it's so broken  :/
+TODO: allow import of fds as aio_wd
+TODO: close_range
+TODO: move_mount, open_tree, fsmount, fspick, fsconfig, fsopen https://lwn.net/Articles/759499/
+
+	- another workaround for the low-quality musl libc.
+	- test for umount seperately, as it is more portable.
+        - some low-quality posix attempts (openbsd, osx) declare the availability
+          of fexecve but then don't even bother to implemnent a stub.
+
+4.79 Sun 25 Sep 2022 18:25:53 CEST
+	- the autoconf result of the mount check was not used, so it failed to
+          compile on most systems (reported by crackoff@tutanota.com).
+	- work around fedora not having a working C compiler setup by design
+          (reported by Paul Howarth).
+
+4.78 Tue 06 Sep 2022 12:54:43 CEST
+	- add IO::AIO::mount and IO::AIO::umount.
+	- add a bunch of symbols from sys/mount.h.
+
+4.77 Mon 05 Sep 2022 02:03:38 CEST
+	- add MFD_HUGETLB_2MB and MFD_HUGETLB_1GB constants.
+        - add fexecve.
+        - add lots of missing functions to @EXPORT_OK.
+
+4.76 Tue Jul 27 20:45:01 CEST 2021
+	- add autoconf test for siginfo_t, which is, of course, not
+          available on windows (reported by Peter Petky).
+	- disable syscalls on solaris, as perl seems to provide an
+          incompatible syscall prototype that clashes with sys/syscall.h.
+        - add MAP_FIXED_NOREPLACE, MAP_SHARED_VALIDATE, MAP_SYNC and
+          MAP_UNINITIALIZED.
+
+4.75 Wed Dec 30 08:44:55 CET 2020
+	- removed leftover debug output from treescan.
+	- added (but not documented) waitid-P_*, FSPICK_*, FSOPEN_*,
+          FSCONFIG_*, MOUNT_ATTR_* constants.
+
+4.74 Tue Dec 29 16:19:28 CET 2020
+	- added pidfd_open, pidfd_getfd and pidfd_send_signal functions.
+        - rework bin/treescan to avoid recursion. This fixes two bugs
+          where a deep directory traversal or a lot of command line
+          arguments could cause it to crash.
+	- added (but not documented) open_tree, AT_* and move_mount flags.
+        - support defining syscall numbers in gendef0.
+
+4.73 Fri Dec  4 02:08:37 CET 2020
+	- def0.h was not uptodate, running into musl problems
+          (reported by B Fraser).
+	- IO::AIO::splice and IO::AIO::tee didn't properly return
+          64 bit values.
+	- added IO::AIO::accept4.
+	- add various F_SEAL related fcntl constants.
+        - removed experimental marker for fdlimit functions.
+        - fiemap now includes the last segment even if it overflows
+          the end offset, which is arguably the correct behaviour.
+
+4.72 Wed Apr  3 04:56:03 CEST 2019
+        - (libeio) if fd 0 is available do not use it for aio_wd, as it
+          collides with IO::AIO::CWD.
+	- added IO::AIO::memfd_create.
+	- correctly include <sys/uio.h> in the vmsplice test.
+        - reduce codesize by ~7% on amd64 by declaring more functions
+          as noinline.
+        - documentation fixes and updates.
+        - experimental and undocumented preliminary support for synchronous statx.
+
+4.71 Sun Mar 10 13:09:26 CET 2019
+	- due to an error in the linux manpages, the configure tests
+          for readahead, sync_file_range, splice etc. failed. This has been fixed.
+
+4.7  Mon Mar  4 11:28:13 CET 2019
+	- majorly speed up scandir for the very special case of a non-POSIX
+          filesystem that nevertheless reports valid dt_type information.
+          The only known filesystem of this type is currently btrfs, which
+          didn't get it's act together to implement POSIX semantics in all
+          these years, and I am tired of waiting.
+	- add IO::AIO::MCL_ONFAULT for mlockall, add IO::AIO::mlockall.
+	- neither sys/mkdev.h nor sys/sysmacros.h were included, even when they
+          were detected by autoconf.
+
+4.6  Sat Aug 25 21:58:36 CEST 2018
+	- add st_btime, st_btimesec, st_btimensec and st_gen accessors,
+          mostly for bsds which expose birthtime and st_gen members (netbsd, freebsd
+          but only st_gen on openbsd because they compiled their perl without support
+          for birthtimes).
+        - fix madvise and munlock to properly support negative offsets.
+        - allocate fd for the aio_close at boot time, to guarantee it working
+          later, rather than calling abort when it fails. also avoids
+          close-on-exec race issues after module load.
+        - #undef utime on win32, maybe this helps some reports of utime hangs.
+        - minor doc improvements.
+        - minor configure cleanups.
+        - use $Config{perllibs} instead of libs for configure. might help people
+          who didn't install all perl dependencies (might break things as well).
+
+4.54 Tue Aug 14 13:54:48 CEST 2018
+	- include sys/mkdev.h or sys/sysmacros.h if available.
+        - further tweaks to configure invocation for systems requiring --rpath.
+        - no longer rely on custom paths on win32 platforms.
+        - try to work around buggy PAGESIZE macro on solaris.
+
+4.53 Tue Aug 14 11:27:50 CEST 2018
+	- add $Config{libs} to LIBS for configure, to work around systems
+          with broken library dependencies (... openbsd).
+
+4.52 Sun Aug 12 08:09:45 CEST 2018
+	- config.h.in was missing in distribution.
+
+4.51 Sun Aug 12 07:24:14 CEST 2018
+	- complete rework of the autoconf framework: IO::AIO now uses its own
+          config.h, separate from libeio, and tries to test the actual perl
+          environment, not the standard system environment.
+        - provide nanosecond-accracy stat time accessors for both perl and IO::AIO
+          stat functions.
+	- removed non-portable C++ syntax from eio.c.
+        - try to fix readdir tests on cygwin spuriously failing.
 
 4.5  Wed Aug  1 00:23:55 CEST 2018
 	- aio_mtouch touch all pages as requested, not just the first page in most cases.