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Rick Macklem d189a74dfd copy_file_range(2): add recommendation to use large "len" 
PR#252358 reported a serious performance problem w.r.t.
cp(1) when copying large non-sparse files.
This problem appears to have been caused by cp(1)
calling copy_file_range(2) with a small "len" argument.

This patch adds a recommendation to use a large "len"
value where possible, for performance reasons.

Reviewed by:	asomers
Differential Revision:	https://reviews.freebsd.org/D27935
2021-01-02 17:21:21 -08:00
..
__error.c
General further adoption of SPDX licensing ID tags.
2017-11-20 19:49:47 +00:00
__vdso_gettimeofday.c
libc: Fix possible overflow in binuptime().
2020-04-09 23:22:35 +00:00
_exit.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
_umtx_op.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
abort2.2
…
accept4.c
…
accept.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
accept.c
…
access.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
acct.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
adjtime.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
aio_cancel.2
…
aio_error.2
…
aio_fsync.2
Fix various nits in the aio operation manpages.
2016-08-19 17:37:32 +00:00
aio_mlock.2
Fix various nits in the aio operation manpages.
2016-08-19 17:37:32 +00:00
aio_read.2
Fix various nits in the aio operation manpages.
2016-08-19 17:37:32 +00:00
aio_return.2
Fully handle size_t lengths in AIO requests.
2016-03-21 21:37:33 +00:00
aio_suspend.2
aio_suspend.2: properly canonicalize .Dd
2020-12-11 00:28:28 +00:00
aio_suspend.c
…
aio_waitcomplete.2
Fully handle size_t lengths in AIO requests.
2016-03-21 21:37:33 +00:00
aio_write.2
Fix various nits in the aio operation manpages.
2016-08-19 17:37:32 +00:00
bind.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
bindat.2
Clarify bindat/connectat use with AT_FDCWD
2018-04-30 17:16:17 +00:00
brk.2
Reimplement brk() and sbrk() to avoid the use of _end.
2018-06-04 19:35:15 +00:00
brk.c
Reimplement brk() and sbrk() to avoid the use of _end.
2018-06-04 19:35:15 +00:00
cap_enter.2
cap_enter(2): fix CAVEATS section
2020-12-11 00:26:49 +00:00
cap_fcntls_limit.2
libcasper(3): Document HISTORY within the manpages
2020-06-16 16:48:52 +00:00
cap_ioctls_limit.2
libcasper(3): Document HISTORY within the manpages
2020-06-16 16:48:52 +00:00
cap_rights_limit.2
libcasper(3): Document HISTORY within the manpages
2020-06-16 16:48:52 +00:00
chdir.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
chflags.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
chmod.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
chown.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
chroot.2
Updates to chroot(2) docs
2020-09-29 18:13:54 +00:00
clock_gettime.2
clock_gettime(2): add a HISTORY section
2019-12-07 16:45:12 +00:00
clock_gettime.c
libc: further adoption of SPDX licensing ID tags.
2017-11-25 17:12:48 +00:00
clock_nanosleep.c
Remove 'All rights reserved' from my files
2018-05-09 20:12:59 +00:00
close.2
Mark all the system calls that were in 1st Edition Unix as such in the
2017-12-01 22:26:36 +00:00
close.c
…
closefrom.2
Implement a close_range(2) syscall
2020-04-12 21:23:19 +00:00
closefrom.c
closefrom: clamp lowfd to >= 0; close_range's parameters are unsigned.
2020-04-14 23:24:24 +00:00
compat-ino64.h
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
compat-stub.c
Remove bits of the old NUMA.
2018-07-10 22:00:20 +00:00
connect.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
connect.c
…
connectat.2
Clarify bindat/connectat use with AT_FDCWD
2018-04-30 17:16:17 +00:00
copy_file_range.2
copy_file_range(2): add recommendation to use large "len"
2021-01-02 17:21:21 -08:00
cpuset_getaffinity.2
cpuset{,_getaffinity,_getdomain}.2: fix SEE ALSO
2020-12-11 01:52:27 +00:00
cpuset_getdomain.2
cpuset{,_getaffinity,_getdomain}.2: fix SEE ALSO
2020-12-11 01:52:27 +00:00
cpuset.2
cpuset{,_getaffinity,_getdomain}.2: fix SEE ALSO
2020-12-11 01:52:27 +00:00
dup.2
Correct history for Unix 2nd Edition through 6th Edition for the
2017-12-01 22:48:20 +00:00
eventfd.2
eventfd.2: Add the mail address of the submitter into copyright.
2020-12-28 21:03:16 +02:00
execve.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
extattr_get_file.2
extattr_get_file(20: bump .Dd
2020-12-08 04:18:16 +00:00
fcntl.2
vfs: provide F_ISUNIONSTACK as a kludge for libc
2020-01-17 14:42:25 +00:00
fcntl.c
libc: further adoption of SPDX licensing ID tags.
2017-11-25 17:12:48 +00:00
fdatasync.c
The fdatasync(2) call must be cancellation point.
2016-08-16 08:27:03 +00:00
ffclock.2
…
fhlink.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
fhopen.2
…
fhreadlink.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
flock.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
fork.2
Mark all the system calls that were in 1st Edition Unix as such in the
2017-12-01 22:26:36 +00:00
fork.c
…
fstat.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
fstatat.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
fstatfs.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
fsync.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
fsync.c
…
getdents.c
Forward compatibility for ino64.
2017-06-23 18:06:20 +00:00
getdirentries.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
getdirentries.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
getdtablesize.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getfh.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
getfsstat.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
getfsstat.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
getgid.2
libc manpages: various improvements from NetBSD
2020-06-14 05:59:30 +00:00
getgroups.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getitimer.2
Fix a few mandoc issues
2020-10-09 19:12:44 +00:00
getlogin.2
getlogin_r: fix the type of len
2020-09-09 18:07:13 +00:00
getloginclass.2
Drop "All rights reserved" from all my stuff. This includes
2020-10-28 13:46:11 +00:00
getpeername.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getpgrp.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getpid.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getpriority.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getrandom.2
getrandom(2): Add Linux GRND_INSECURE API flag
2020-01-12 20:47:38 +00:00
getrlimit.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getrusage.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getsid.2
…
getsockname.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
getsockopt.2
Fix a few mandoc issues
2020-10-09 19:12:44 +00:00
gettimeofday.2
Bump .Dd forgotten in last commit.
2018-10-28 03:02:09 +00:00
gettimeofday.c
libc: further adoption of SPDX licensing ID tags.
2017-11-25 17:12:48 +00:00
getuid.2
Correct history for Unix 2nd Edition through 6th Edition for the
2017-12-01 22:48:20 +00:00
interposing_table.c
Fix initial exec TLS mode for dynamically loaded shared objects.
2019-03-29 17:52:57 +00:00
intro.2
Create new EINTEGRITY error with message "Integrity check failed".
2019-01-17 06:35:45 +00:00
ioctl.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
issetugid.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
jail.2
Revert r337922, except for some documention-only bits. This needs to wait
2018-08-16 19:09:43 +00:00
kenv.2
Make several improvements and corrections in the kenv(2) man page
2017-02-21 19:51:41 +00:00
kevent.c
…
kill.2
Only return EPERM from kill(-pid) when no process was signalled.
2019-12-07 18:07:49 +00:00
kldfind.2
…
kldfirstmod.2
…
kldload.2
…
kldnext.2
…
kldstat.2
…
kldsym.2
Use 'cmd' rather than 'command' to match the function prototype.
2016-10-17 22:36:37 +00:00
kldunload.2
…
kqueue.2
Document eventfd().
2020-12-27 12:57:26 +02:00
ktrace.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
link.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
lio_listio.2
lio_listio(2): fix manlint error
2020-12-08 03:48:05 +00:00
listen.2
Make sonewconn() overflow messages have per-socket rate-limits and values.
2020-04-14 15:38:18 +00:00
lseek.2
lseek(2): Document the seek behavior better and update the POSIX compliance
2020-07-13 15:52:57 +00:00
lstat.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
madvise.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
Makefile.inc
Add eventfd(3) wrappers to libc.
2020-12-27 12:57:26 +02:00
mincore.2
Include the psind in data returned by mincore(2).
2020-09-02 18:16:43 +00:00
minherit.2
Implement INHERIT_ZERO for minherit(2).
2017-03-14 17:10:42 +00:00
mkdir.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
mkfifo.2
Trim some duplicate EIO descriptions.
2020-03-30 21:48:47 +00:00
mknod.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
mknod.c
Commit the 64-bit inode project.
2017-05-23 09:29:05 +00:00
mlock.2
Provide separate accounting for user-wired pages.
2019-05-13 16:38:48 +00:00
mlockall.2
Provide separate accounting for user-wired pages.
2019-05-13 16:38:48 +00:00
mmap.2
mmap(2): Update .Dd missed in the last commit
2020-12-24 14:14:56 +00:00
modfind.2
Use the right argumant name
2016-03-18 08:47:17 +00:00
modnext.2
…
modstat.2
…
mount.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
mprotect.2
Return ENOTSUP for mmap/mprotect if prot not subset of prot_max
2020-02-26 20:03:43 +00:00
mq_close.2
…
mq_getattr.2
…
mq_notify.2
Add documentation for the sigevent structure.
2016-07-15 15:12:56 +00:00
mq_open.2
Revert the mode_t -> int changes and add a warning in the BUGS section instead.
2019-09-28 17:15:48 +00:00
mq_receive.2
…
mq_send.2
…
mq_setattr.2
…
msgctl.2
Avoid copying out kernel pointers from msgctl(IPC_STAT).
2020-07-09 17:26:49 +00:00
msgget.2
Refer to SysV IPC permissions as numeric constants.
2018-03-04 20:06:02 +00:00
msgrcv.2
Change the return type of msgrcv() to ssize_t as required by POSIX.
2016-07-28 12:22:01 +00:00
msgsnd.2
…
msync.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
msync.c
…
munmap.2
Implement address space guards.
2017-06-24 17:01:11 +00:00
nanosleep.2
Add clock_nanosleep()
2017-03-19 00:51:12 +00:00
nanosleep.c
…
nfssvc.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
ntp_adjtime.2
…
open.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
open.c
…
openat.c
libc: partially revert r326576
2020-04-25 14:24:54 +00:00
pathconf.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
pdfork.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
pipe.2
Correct history for Unix 2nd Edition through 6th Edition for the
2017-12-01 22:48:20 +00:00
pipe.c
Replace use of the pipe(2) system call with pipe2(2) with a zero flags
2016-06-22 21:11:27 +00:00
poll.2
poll.2: POLLNVAL is returned also for insufficient rights
2019-02-27 17:52:22 +00:00
poll.c
…
posix_fadvise.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
posix_fallocate.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
posix_openpt.2
posix_openpt.2: Sort includes per style(9)
2016-09-21 17:51:27 +00:00
ppoll.c
…
procctl.2
procctl(2): consistently refer to the last agrument as 'data'
2020-07-11 18:04:09 +00:00
profil.2
Correct history for Unix 2nd Edition through 6th Edition for the
2017-12-01 22:48:20 +00:00
pselect.2
…
pselect.c
…
ptrace.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
ptrace.c
Rewrite ptrace(2) wrappers in C.
2016-08-29 18:47:51 +00:00
quotactl.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
rctl_add_rule.2
rctl_add_rule(2): fix manlint warnings
2017-05-23 07:32:57 +00:00
read.2
vfs: add restrictions to read(2) of a directory [2/2]
2020-06-04 18:17:25 +00:00
read.c
…
readlink.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
readv.c
…
reboot.2
Tweak documentation to RB_ constants to reflect current use
2018-07-10 00:01:14 +00:00
recv.2
Update example to something people less than 40 years old have heard about.
2018-10-21 07:30:26 +00:00
recvfrom.c
…
recvmsg.c
…
rename.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
revoke.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
rfork.2
posix_spawn(3): handle potential signal issues with vfork
2019-09-25 19:22:03 +00:00
rmdir.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
rtprio.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
sched_get_priority_max.2
…
sched_setparam.2
…
sched_setscheduler.2
…
sched_yield.2
…
sctp_generic_recvmsg.2
…
sctp_generic_sendmsg.2
…
sctp_peeloff.2
…
select.2
man page of select(2) should mention pselect(2)
2020-06-25 12:31:05 +00:00
select.c
…
semctl.2
Apply the logic from r363051 to semctl(2) and __sem_base field.
2020-07-09 18:34:54 +00:00
semget.2
Refer to SysV IPC permissions as numeric constants.
2018-03-04 20:06:02 +00:00
semop.2
…
send.2
Document handling of connection-mode sockets by sendto(2).
2020-04-27 16:12:32 +00:00
sendfile.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
sendmsg.c
…
sendto.c
…
setcontext.c
libc: partially revert r326576
2020-04-25 14:24:54 +00:00
setfib.2
Don't end up manpage titles with a full stop.
2017-05-24 21:02:53 +00:00
setgroups.2
Update .Dd missed in -r328304.
2018-01-24 22:36:21 +00:00
setpgid.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
setregid.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
setresuid.2
…
setreuid.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
setsid.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
setuid.2
Correct history for Unix 2nd Edition through 6th Edition for the
2017-12-01 22:48:20 +00:00
shm_open.2
Add an shm_rename syscall
2019-09-26 15:32:28 +00:00
shm_open.c
Fix error checking in shm_create_largepage().
2020-09-18 12:30:15 +00:00
shmat.2
Implement shmat(2) flag SHM_REMAP.
2019-01-16 05:15:57 +00:00
shmctl.2
…
shmget.2
Refer to SysV IPC permissions as numeric constants.
2018-03-04 20:06:02 +00:00
shutdown.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
sigaction.2
[skip ci] document close_range(2) as async-signal-safe
2020-07-21 16:46:40 +00:00
sigaction.c
…
sigaltstack.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
sigfastblock.2
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +00:00
sigpending.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
sigprocmask.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
sigprocmask.c
…
sigqueue.2
Provide a freebsd32 implementation of sigqueue()
2017-05-05 18:49:39 +00:00
sigreturn.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
sigstack.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
sigsuspend.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
sigsuspend.c
…
sigtimedwait.c
…
sigwait.2
…
sigwait.c
libc: further adoption of SPDX licensing ID tags.
2017-11-25 17:12:48 +00:00
sigwaitinfo.2
…
sigwaitinfo.c
…
socket.2
Document socket control message routines for ancillary data access (CMSG_DATA).
2018-08-19 17:42:49 +00:00
socketpair.2
socketpair.2: Reference relevant POSIX standards
2018-02-10 19:41:32 +00:00
stat.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
stat.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
statfs.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
statfs.c
Regularize my copyright notice
2019-12-04 16:56:11 +00:00
swapcontext.c
libc: partially revert r326576
2020-04-25 14:24:54 +00:00
swapon.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
Symbol.map
Add shm_create_largepage(3) helper for creation and configuration of
2020-09-09 22:20:36 +00:00
symlink.2
Trim some duplicate EIO descriptions.
2020-03-30 21:48:47 +00:00
sync.2
Correct history for Unix 2nd Edition through 6th Edition for the
2017-12-01 22:48:20 +00:00
sysarch.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
syscall.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
thr_exit.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
thr_kill.2
Add HISTORY sections to document when this
2020-05-05 19:31:47 +00:00
thr_new.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
thr_self.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
thr_set_name.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
thr_suspend.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
thr_wake.2
libc: Fix most issues reported by mandoc
2020-12-19 14:54:28 +00:00
timer_create.2
Add documentation for the sigevent structure.
2016-07-15 15:12:56 +00:00
timer_delete.2
…
timer_settime.2
…
trivial-vdso_tc.c
Implement userspace gettimeofday(2) with HPET timecounter.
2016-08-17 09:52:09 +00:00
truncate.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
umask.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
undelete.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
unlink.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
utimensat.2
Document {O,AT}_RESOLVE_BENEATH and new O_BENEATH behavior for relative paths.
2020-09-22 22:54:54 +00:00
utimes.2
Document EINTEGRITY errors for many system calls.
2020-03-30 21:44:00 +00:00
utrace.2
…
uuidgen.2
…
vadvise.c
Make vadvise compat freebsd11.
2018-05-25 20:40:23 +00:00
vfork.2
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
wait4.c
…
wait6.c
…
wait.2
wait(2): clarify reparenting of children of the exiting process.
2019-08-11 15:47:48 +00:00
write.2
update write(2)'s iovec limit w/ info about the iosize_max_clamp sysctl...
2020-10-26 00:37:31 +00:00
write.c
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writev.c
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