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freebsd-dev/lib/libc/sys
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John Baldwin 936c09ac0f Add the posix_fadvise(2) system call. It is somewhat similar to 
madvise(2) except that it operates on a file descriptor instead of a
memory region.  It is currently only supported on regular files.

Just as with madvise(2), the advice given to posix_fadvise(2) can be
divided into two types.  The first type provide hints about data access
patterns and are used in the file read and write routines to modify the
I/O flags passed down to VOP_READ() and VOP_WRITE().  These modes are
thus filesystem independent.  Note that to ease implementation (and
since this API is only advisory anyway), only a single non-normal
range is allowed per file descriptor.

The second type of hints are used to hint to the OS that data will or
will not be used.  These hints are implemented via a new VOP_ADVISE().
A default implementation is provided which does nothing for the WILLNEED
request and attempts to move any clean pages to the cache page queue for
the DONTNEED request.  This latter case required two other changes.
First, a new V_CLEANONLY flag was added to vinvalbuf().  This requests
vinvalbuf() to only flush clean buffers for the vnode from the buffer
cache and to not remove any backing pages from the vnode.  This is
used to ensure clean pages are not wired into the buffer cache before
attempting to move them to the cache page queue.  The second change adds
a new vm_object_page_cache() method.  This method is somewhat similar to
vm_object_page_remove() except that instead of freeing each page in the
specified range, it attempts to move clean pages to the cache queue if
possible.

To preserve the ABI of struct file, the f_cdevpriv pointer is now reused
in a union to point to the currently active advice region if one is
present for regular files.

Reviewed by:	jilles, kib, arch@
Approved by:	re (kib)
MFC after:	1 month
2011-11-04 04:02:50 +00:00
..
__error.c Fix many "function declaration isn't a prototype" warnings in libc. 2009-12-05 19:31:38 +00:00
_exit.2
abort2.2
accept.2 Attempt to reduce accidental foot-shooting by pointing out that 2009-11-02 07:21:13 +00:00
access.2 mdoc: move CAVEATS, BUGS and SECURITY CONSIDERATIONS sections to the 2010-05-13 12:07:55 +00:00
acct.2
adjtime.2
aio_cancel.2 style(9) cleanup 2008-04-03 02:41:54 +00:00
aio_error.2
aio_read.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
aio_return.2
aio_suspend.2 style(9) cleanup 2008-04-03 02:41:54 +00:00
aio_waitcomplete.2
aio_write.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
bind.2 Document EINVAL for bind(2). 2009-06-01 09:32:12 +00:00
brk.2
cap_enter.2 Make cap_new(2) and cap_getmode(2) symbols from libc public so applications 2011-03-03 11:31:08 +00:00
cap_new.2 Add experimental support for process descriptors 2011-08-18 22:51:30 +00:00
chdir.2
chflags.2 - Note that non-superusers are not allowed to set the SF_ARCHIVED 2010-10-29 15:03:29 +00:00
chmod.2 Update sticky(7) cross references. 2011-05-13 16:29:57 +00:00
chown.2 Man pages for the openat(2), fexecve(2) and related syscalls. 2008-04-16 13:03:12 +00:00
chroot.2
clock_gettime.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
close.2 Add a new 'void closefrom(int lowfd)' system call. When called, it closes 2009-06-15 20:38:55 +00:00
closefrom.2 Add a new 'void closefrom(int lowfd)' system call. When called, it closes 2009-06-15 20:38:55 +00:00
connect.2 Add ECONNRESET to list of possible errors in connect(2). 2010-09-06 21:39:54 +00:00
cpuset_getaffinity.2 Bump dates in dbopen(3) and cpuset_getaffinity(2) from r212441 and 2010-09-12 14:04:05 +00:00
cpuset.2 Add a set of manual pages for pthread[_attr]_[sg]etaffinity(3). 2010-01-09 12:31:11 +00:00
dup.2 Cross-reference cap_new(2) from dup(2), as they have similar functionality. 2011-08-14 12:41:44 +00:00
execve.2 Fix exec_imgact_shell()'s handling of two error cases: (1) Previously, if 2010-09-21 16:24:51 +00:00
extattr_get_file.2 Update this manual page to describe the extattr_list_file() and the 2008-01-29 18:15:38 +00:00
fcntl.2 Update xrefs from 4.3BSD to modern signal functions in various man pages. 2010-05-06 22:49:54 +00:00
fcntl.c Call the fcntl compatiblity wrapper from the thread library fcntl wrappers 2008-05-30 14:47:42 +00:00
fhopen.2
flock.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
fork.2
fsync.2
ftruncate.c Change the C wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate to 2007-07-04 23:27:38 +00:00
getdirentries.2
getdtablesize.2
getfh.2 getfh(2): Add xrefs for fhopen(2), open(2), stat(2). 2011-04-14 22:06:11 +00:00
getfsstat.2
getgid.2
getgroups.2 getgroups(2): Remove mention of <sys/param.h> and refer to sysconf(3). 2011-01-21 22:15:17 +00:00
getitimer.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
getlogin.2
getloginclass.2 Add manual page for getloginclass(2) and setloginclass(2). 2011-03-06 08:35:50 +00:00
getpeername.2
getpgrp.2
getpid.2
getpriority.2 mdoc: make pages render with mandoc 2010-10-21 12:27:13 +00:00
getrlimit.2 Update xrefs from 4.3BSD to modern signal functions in various man pages. 2010-05-06 22:49:54 +00:00
getrusage.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
getsid.2
getsockname.2
getsockopt.2 This commit implements the SO_USER_COOKIE socket option, which lets 2010-11-12 13:02:26 +00:00
gettimeofday.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
getuid.2
intro.2 Add description of ECAPMODE to errno(2) man page. 2011-03-03 11:29:48 +00:00
ioctl.2 Document FIONREAD, FIONWRITE and FIONSPACE. 2010-05-11 17:02:12 +00:00
issetugid.2
jail.2 Spelling fixes. 2010-08-02 16:01:45 +00:00
kenv.2
kill.2
kldfind.2
kldfirstmod.2
kldload.2
kldnext.2
kldstat.2 - Clarification on kld_file_stat.size 2011-04-23 20:59:58 +00:00
kldsym.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
kldunload.2 Document that kldunloadf can return EINVAL. 2008-12-25 09:15:31 +00:00
kqueue.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
kse.2
ktrace.2 Add a new trace point, KTRFAC_CAPFAIL, which traces capability check 2011-10-11 20:37:10 +00:00
link.2 Correct AT_SYMLINK_FOLLOW flag name in linkat(2) man page. 2009-07-19 16:48:25 +00:00
lio_listio.2
listen.2
lseek.2 Bump date. 2007-04-05 21:17:52 +00:00
lseek.c Change the C wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate to 2007-07-04 23:27:38 +00:00
madvise.2 Add the posix_fadvise(2) system call. It is somewhat similar to 2011-11-04 04:02:50 +00:00
Makefile.inc Add the posix_fadvise(2) system call. It is somewhat similar to 2011-11-04 04:02:50 +00:00
mincore.2 Add support to mincore for detecting whether a page is part of a 2008-03-28 04:29:27 +00:00
minherit.2 Bump manpage date, missed during the last change. 2007-10-30 15:28:43 +00:00
mkdir.2 - Forgot to bump a date after last change 2008-06-30 08:46:09 +00:00
mkfifo.2 Man pages for the openat(2), fexecve(2) and related syscalls. 2008-04-16 13:03:12 +00:00
mknod.2 mknod(2): The required include is <sys/stat.h>, not <unistd.h>. 2011-01-16 21:59:50 +00:00
mlock.2 Update mlockall(2) to mention that it's superuser-only syscall, just 2010-07-27 20:34:37 +00:00
mlockall.2 Update mlockall(2) to mention that it's superuser-only syscall, just 2010-07-27 20:34:37 +00:00
mmap.2 Remove sysctl vm.max_proc_mmap used to protect from KVA space exhaustion. 2011-02-24 09:22:56 +00:00
mmap.c Change the C wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate to 2007-07-04 23:27:38 +00:00
modfind.2
modnext.2
modstat.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
mount.2 Change the current working directory to be inside the jail created by 2010-05-27 03:15:04 +00:00
mprotect.2
mq_close.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
mq_getattr.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
mq_notify.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
mq_open.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
mq_receive.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
mq_send.2 mdoc: remove literal tabs where they don't belong 2010-06-08 16:48:59 +00:00
mq_setattr.2 mq_setattr(2): Add missing const to man page. 2011-05-17 21:03:34 +00:00
msgctl.2 Move msg{snd,recv,get,ctl} manual pages from section 3 to 2. 2009-07-13 12:53:43 +00:00
msgget.2 Move msg{snd,recv,get,ctl} manual pages from section 3 to 2. 2009-07-13 12:53:43 +00:00
msgrcv.2 Move msg{snd,recv,get,ctl} manual pages from section 3 to 2. 2009-07-13 12:53:43 +00:00
msgsnd.2 Move msg{snd,recv,get,ctl} manual pages from section 3 to 2. 2009-07-13 12:53:43 +00:00
msync.2
munmap.2
nanosleep.2 In nanosleep(2), note that the calling thread is put to sleep, not the 2009-10-11 16:23:11 +00:00
nfssvc.2
ntp_adjtime.2 Fix typos, spelling, formatting and mdoc mistakes found by Nobuyuki while 2010-08-16 15:18:30 +00:00
open.2 Fix mdoc errors. 2011-04-01 19:57:27 +00:00
pathconf.2 mdoc: make pages render with mandoc 2010-10-21 12:27:13 +00:00
pdfork.2 Add experimental support for process descriptors 2011-08-18 22:51:30 +00:00
pipe.2 Several cleanups related to pipe(2). 2008-11-11 14:55:59 +00:00
poll.2
posix_fadvise.2 Add the posix_fadvise(2) system call. It is somewhat similar to 2011-11-04 04:02:50 +00:00
posix_fallocate.2 Add the posix_fallocate(2) syscall. The default implementation in 2011-04-18 16:32:22 +00:00
posix_openpt.2 Integrate the new MPSAFE TTY layer to the FreeBSD operating system. 2008-08-20 08:31:58 +00:00
pread.c Change the C wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate to 2007-07-04 23:27:38 +00:00
profil.2
pselect.2 Move pselect(3) man page to section 2. 2009-10-28 11:14:32 +00:00
ptrace.2 Remove no longer needed BUGS section. 2011-10-06 17:35:38 +00:00
pwrite.c Change the C wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate to 2007-07-04 23:27:38 +00:00
quotactl.2 Debugging nits found while testing the new 64-bit quota code. 2010-03-16 06:12:30 +00:00
read.2
readlink.2 Man pages for the openat(2), fexecve(2) and related syscalls. 2008-04-16 13:03:12 +00:00
reboot.2
recv.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
rename.2 Add one more EACCES clause to rename.2. 2008-11-07 15:01:40 +00:00
revoke.2 Add revoke(1). 2009-06-15 21:52:27 +00:00
rfork.2 Document RFTSIGZMB. Fix spelling of SIGCHLD. Note that signals are 2011-07-12 20:38:42 +00:00
rmdir.2
rtprio.2
sched_get_priority_max.2
sched_setparam.2
sched_setscheduler.2 mdoc: drop redundant .Pp and .LP calls 2010-10-08 12:40:16 +00:00
sched_yield.2
sctp_generic_recvmsg.2 Miscellaneous mdoc, spelling and inconsistency fixes. 2010-01-12 21:45:03 +00:00
sctp_generic_sendmsg.2 Miscellaneous mdoc, spelling and inconsistency fixes. 2010-01-12 21:45:03 +00:00
sctp_peeloff.2 Fix a couple of typos. 2010-07-30 11:58:18 +00:00
select.2 Add note about other systems. 2007-12-19 03:33:13 +00:00
semctl.2 Make the structure definitions in the man pages match the real code, and 2009-06-29 18:54:17 +00:00
semget.2
semop.2 Fix incorrect usage of 'assure' and 'insure'. 2010-08-28 16:32:01 +00:00
send.2 Standardize the various prison_foo_ip[46] functions and prison_if to 2009-02-05 14:06:09 +00:00
sendfile.2 Further fix grammar. 2010-01-07 21:14:46 +00:00
setfib.2 Fix setfib(1) section number. 2009-09-18 14:17:00 +00:00
setgroups.2 In preparation for raising NGROUPS and NGROUPS_MAX, change base 2009-06-19 15:58:24 +00:00
setpgid.2 Describe what setpgid(2) does when pgid=0. The text has been 2009-12-01 06:12:31 +00:00
setregid.2
setresuid.2
setreuid.2
setsid.2
setuid.2 mdoc: move CAVEATS, BUGS and SECURITY CONSIDERATIONS sections to the 2010-05-13 12:07:55 +00:00
shm_open.2 Fix typos, spelling, formatting and mdoc mistakes found by Nobuyuki while 2010-08-16 15:18:30 +00:00
shmat.2 Update shmget(2) with POSIX access permissions and remove non-standard SHM_R, 2010-12-17 21:10:08 +00:00
shmctl.2 Update shmget(2) with POSIX access permissions and remove non-standard SHM_R, 2010-12-17 21:10:08 +00:00
shmget.2 Sort cross references by section. 2010-12-18 10:09:07 +00:00
shutdown.2
sigaction.2 Update xrefs from 4.3BSD to modern signal functions in various man pages. 2010-05-06 22:49:54 +00:00
sigaltstack.2 Use NULL instead of 0 for pointer in example. 2010-08-29 16:38:08 +00:00
sigpending.2
sigprocmask.2 sigprocmask(2): pthread_sigmask(3) must be used in threaded processes. 2010-05-07 20:46:22 +00:00
sigqueue.2
sigreturn.2 Update xrefs from 4.3BSD to modern signal functions in various man pages. 2010-05-06 22:49:54 +00:00
sigstack.2
sigsuspend.2
sigwait.2 Clarify the behaviour of sigwait() on signal interruption, and note 2011-08-25 10:00:38 +00:00
sigwait.c Because POSIX does not allow EINTR to be returned from sigwait(), 2010-09-10 01:47:37 +00:00
sigwaitinfo.2 Clarify the behaviour of sigwait() on signal interruption, and note 2011-08-25 10:00:38 +00:00
socket.2 Note that the protocol argument can be set to 0. 2009-01-05 12:18:46 +00:00
socketpair.2
stack_protector_compat.c Move the __stack_chk_fail_local@FBSD_1.0 compat symbol definition into 2010-08-24 12:58:54 +00:00
stack_protector.c Clang related fixes: 2010-10-13 16:57:06 +00:00
stat.2 Update sticky(7) cross references. 2011-05-13 16:29:57 +00:00
statfs.2
swapon.2
Symbol.map Add the posix_fadvise(2) system call. It is somewhat similar to 2011-11-04 04:02:50 +00:00
symlink.2 Man pages for the openat(2), fexecve(2) and related syscalls. 2008-04-16 13:03:12 +00:00
sync.2
sysarch.2
syscall.2
timer_create.2 Fix typo in timer_getoverrun cross-reference. 2011-10-26 14:26:10 +00:00
timer_delete.2 Fix library names. 2007-06-18 01:50:03 +00:00
timer_settime.2 Fix library names. 2007-06-18 01:50:03 +00:00
truncate.2
truncate.c Change the C wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate to 2007-07-04 23:27:38 +00:00
umask.2
undelete.2
unlink.2 unlinkat(2): unlinkat(AT_REMOVEDIR) fails with ENOTEMPTY like rmdir() 2010-04-25 13:55:52 +00:00
utimes.2 Man pages for the openat(2), fexecve(2) and related syscalls. 2008-04-16 13:03:12 +00:00
utrace.2 The NetBSD Foundation has granted permission to remove clause 3 and 4 from 2010-03-02 17:20:04 +00:00
uuidgen.2
vfork.2 Update xrefs from 4.3BSD to modern signal functions in various man pages. 2010-05-06 22:49:54 +00:00
wait.2 Note how wait(3) is implemented. 2011-06-18 00:53:51 +00:00
write.2