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[linuxjm/jm.git] / manual / LDP_man-pages / draft / man2 / madvise.2

.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (C) 2001 David Gez <davidge@jazzfree.com>
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein.  The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Based on comments from mm/filemap.c. Last modified on 10-06-2001
.\" Modified, 25 Feb 2002, Michael Kerrisk, <mtk.manpages@gmail.com>
.\"    Added notes on MADV_DONTNEED
.\" FIXME
.\" 2.6.32 added MADV_HWPOISON, MADV_MERGEABLE, and MADV_UNMERGEABLE
.\" 2.6.33 added MADV_SOFT_OFFLINE
.\"
.\" Japanese Version Copyright (c) 2001 NAKANO Takeo all rights reserved.
.\" Translated Thu Aug 16 2001 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\" Updated Tue 8 Oct 2002 by NAKANO Takeo
.\" Updated 2007-01-08, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.43
.\"
.TH MADVISE 2 2008-04-22 "Linux" "Linux Programmer's Manual"
.\"O .SH NAME
.\"O madvise \- give advice about use of memory
.SH ̾Á°
madvise \- ¥á¥â¥êÍøÍѤ˴ؤ¹¤ë¥¢¥É¥Ð¥¤¥¹¤òÍ¿¤¨¤ë
.\"O .SH SYNOPSIS
.SH ½ñ¼°
.B #include <sys/mman.h>
.sp
.BI "int madvise(void *" addr ", size_t " length ", int " advice );
.sp
.in -4n
.\"O Feature Test Macro Requirements for glibc (see
.\"O .BR feature_test_macros (7)):
glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
.RB ( feature_test_macros (7)
»²¾È):
.in
.sp
.BR madvise ():
_BSD_SOURCE
.\"O .SH DESCRIPTION
.SH ÀâÌÀ
.\"O The
.\"O .BR madvise ()
.\"O system call advises the kernel about how to handle paging input/output in
.\"O the address range beginning at address
.\"O .I addr
.\"O and with size
.\"O .I length
.\"O bytes.
.\"O It allows an application to tell the kernel how it expects to use
.\"O some mapped or shared memory areas, so that the kernel can choose
.\"O appropriate read-ahead and caching techniques.
.\"O This call does not influence the semantics of the application
.\"O (except in the case of
.\"O .BR MADV_DONTNEED ),
.\"O but
.\"O may influence its performance.
.\"O The kernel is free to ignore the advice.
.BR madvise ()
¥·¥¹¥Æ¥à¥³¡¼¥ë¤Ï¡¢¥¢¥É¥ì¥¹
.I addr
¤«¤é¤Ï¤¸¤Þ¤ë
.I length
¥Ð¥¤¥È¤Î¥á¥â¥ê¥Ö¥í¥Ã¥¯¤Î¥Ú¡¼¥¸¥ó¥°Æþ½ÐÎϤò¤É¤¦°·¤¨¤ÐÎɤ¤¤«¡¢
¥«¡¼¥Í¥ë¤Ë¥¢¥É¥Ð¥¤¥¹¤¹¤ë¡£
¤³¤ì¤òÍѤ¤¤ë¤È¡¢
¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤«¤é¥«¡¼¥Í¥ë¤Ë¡¢
¥Þ¥Ã¥×¤µ¤ì¤¿¥á¥â¥ê¤ä¶¦Í­¥á¥â¥ê¤ò¤É¤Î¤è¤¦¤Ë°·¤Ã¤Æ¤Û¤·¤¤¤«ÅÁ¤¨¤ë¤³¤È¤¬¤Ç¤­¡¢
¥«¡¼¥Í¥ë¤Ï¤½¤ì¤Ë±þ¤¸¤ÆÀèÆɤߤ䥭¥ã¥Ã¥·¥å¤Ê¤É¤ÎŬÀڤʼêË¡¤òÁªÂò¤Ç¤­¤ë¡£
¤³¤Î¥³¡¼¥ë¤Ï¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ÎÆ°ºî¤½¤Î¤â¤Î¤Ë¤Ï±Æ¶Á¤·¤Ê¤¤
.RB ( MADV_DONTNEED
¤Î¾ì¹ç¤ÏÊÌ) ¤¬¡¢
À­Ç½¤Ë¤Ï±Æ¶Á¤·¤¦¤ë¡£
¤Ê¤ª¤³¤Î¥¢¥É¥Ð¥¤¥¹¤ò¼õ¤±Æþ¤ì¤ë¤«¤É¤¦¤«¤Ï¥«¡¼¥Í¥ë¤ËǤ¤µ¤ì¤ë¡£
.LP
.\"O The advice is indicated in the
.\"O .I advice
.\"O argument which can be
¥¢¥É¥Ð¥¤¥¹¤Ï°ú¤­¿ô
.I advice
¤Ë¤è¤Ã¤ÆÍ¿¤¨¤ë¡£°Ê²¼¤Î¤¤¤º¤ì¤«¤ò»ØÄê¤Ç¤­¤ë¡£
.TP
.B MADV_NORMAL
.\"O No special treatment.
.\"O This is the default.
ÆÃÊ̤ʰ·¤¤¤Ï¹Ô¤ï¤Ê¤¤¡£¤³¤ì¤¬¥Ç¥Õ¥©¥ë¥È¤Ç¤¢¤ë¡£
.TP
.B MADV_RANDOM
.\"O Expect page references in random order.
.\"O (Hence, read ahead may be less useful than normally.)
¥Ú¡¼¥¸»²¾È¤Ï¥é¥ó¥À¥à¤Ê½ç½ø¤Ç¹Ô¤ï¤ì¤½¤¦¤À¡£
(¤·¤¿¤¬¤Ã¤Æ¡¢ÀèÆɤߤϤ¢¤Þ¤ê¸ú²Ì¤¬¤Ê¤µ¤½¤¦¤À¡£)
.TP
.B MADV_SEQUENTIAL
.\"O Expect page references in sequential order.
.\"O (Hence, pages in the given range can be aggressively read ahead,
.\"O and may be freed soon after they are accessed.)
¥Ú¡¼¥¸»²¾È¤Ï¥·¡¼¥±¥ó¥·¥ã¥ë¤Ê½ç½ø¤Ç¹Ô¤ï¤ì¤½¤¦¤À¡£
(¤·¤¿¤¬¤Ã¤ÆÍ¿¤¨¤¿ÈϰϤΥڡ¼¥¸¤ÏÀѶËŪ¤ËÀèÆɤߤ·¤Æ¤ª¤¯¤ÈÎɤ¤¤À¤í¤¦¡£
¤Þ¤¿¥¢¥¯¥»¥¹¤¬½ª¤ï¤Ã¤¿¤é®¤ä¤«¤Ë²òÊü¤·¤ÆÎɤ¤¡£)
.TP
.B MADV_WILLNEED
.\"O Expect access in the near future.
.\"O (Hence, it might be a good idea to read some pages ahead.)
¶á¤¤¾­Íè¤Ë¥¢¥¯¥»¥¹¤µ¤ì¤½¤¦¤À¡£
(¤·¤¿¤¬¤Ã¤Æ¤³¤ì¤é¤Î¥Ú¡¼¥¸¤òº£¤Î¤¦¤Á¤ËÀèÆɤߤ·¤Æ¤ª¤¯¤È¤¤¤¤¤À¤í¤¦¡£)
.TP
.B MADV_DONTNEED
.\"O Do not expect access in the near future.
.\"O (For the time being, the application is finished with the given range,
.\"O so the kernel can free resources associated with it.)
¤·¤Ð¤é¤¯¥¢¥¯¥»¥¹¤Ï¤Ê¤µ¤½¤¦¤À¡£
(¸½»þÅÀ¤Ç¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ÏÍ¿¤¨¤¿ÈϰϤνèÍý¤ò½ª¤¨¤Æ¤¤¤ë¡£
¤·¤¿¤¬¤Ã¤Æ¥«¡¼¥Í¥ë¤Ï¤³¤ì¤Ë´ØÏ¢¤¹¤ë¥ê¥½¡¼¥¹¤ò²òÊü¤·¤ÆÎɤ¤¡£)
.\"O Subsequent accesses of pages in this range will succeed, but will result
.\"O either in reloading of the memory contents from the underlying mapped file
.\"O (see
.\"O .BR mmap (2))
.\"O or zero-fill-on-demand pages for mappings
.\"O without an underlying file.
¤³¤ì°Ê¹ß¤³¤ÎÈϰϤΥڡ¼¥¸¤Ø¤Î¥¢¥¯¥»¥¹¤¬¤¢¤ë¤È¡¢
À®¸ù¤Ï¤¹¤ë¤¬¡¢¥á¥â¥ê¤ÎÆâÍƤò¥Þ¥Ã¥×¸µ¤Î¥Õ¥¡¥¤¥ë¤«¤é¥í¡¼¥É¤·Ä¾¤¹¤³¤È¤Ë¤Ê¤ë
.RB ( mmap (2)
¤ò¸«¤è) ¤«¡¢
¤Þ¤¿¤Ï¸µ¥Õ¥¡¥¤¥ë¤¬¤Ê¤¤¥Þ¥Ã¥×¥Ú¡¼¥¸¤Ç¤Ï
¥¢¥¯¥»¥¹¤¬¤¢¤Ã¤¿¤È¤­¤Ë 0 Ëä¤á¤¬¹Ô¤ï¤ì¤ë¤³¤È¤Ë¤Ê¤ë¡£
.TP
.\"O .BR MADV_REMOVE " (Since Linux 2.6.16)"
.BR MADV_REMOVE " (Linux 2.6.16 °Ê¹ß)"
.\"O Free up a given range of pages
.\"O and its associated backing store.
.\"O Currently,
.\"O .\" 2.6.18-rc5
.\"O only shmfs/tmpfs supports this; other file systems return with the
.\"O error
.\"O .BR ENOSYS .
»ØÄꤵ¤ì¤¿ÈϰϤΥڡ¼¥¸¤È´ØÏ¢¤¹¤ë¥Ð¥Ã¥­¥ó¥°¥¹¥È¥¢¤ò²òÊü¤¹¤ë¡£
¸½ºß¤Î¤È¤³¤í¡¢
.\" 2.6.18-rc5
shmfs/tmpfs ¤À¤±¤¬¤³¤ì¤ËÂбþ¤·¤Æ¤¤¤ë¡£
¾¤Î¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ç¤Ï
.B ENOSYS
¤¬ÊÖ¤µ¤ì¤ë¡£
.\" Databases want to use this feature to drop a section of their
.\" bufferpool (shared memory segments) - without writing back to
.\" disk/swap space. This feature is also useful for supporting
.\" hot-plug memory on UML.
.TP
.\"O .BR MADV_DONTFORK " (Since Linux 2.6.16)"
.BR MADV_DONTFORK " (Linux 2.6.16 °Ê¹ß)"
.\" See http://lwn.net/Articles/171941/
.\"O Do not make the pages in this range available to the child after a
.\"O .BR fork (2).
.\"O This is useful to prevent copy-on-write semantics from changing
.\"O the physical location of a page(s) if the parent writes to it after a
.\"O .BR fork (2).
.\"O (Such page relocations cause problems for hardware that
.\"O DMAs into the page(s).)
.BR fork (2)
¤¬¹Ô¤ï¤ì¤¿¸å¡¢»ØÄꤵ¤ì¤¿ÈϰϤΥڡ¼¥¸¤ò»Ò¥×¥í¥»¥¹¤¬ÍøÍѤǤ­¤Ê¤¤¤è¤¦¤Ë¤¹¤ë¡£
¤³¤Îµ¡Ç½¤Ï¡¢½ñ¤­¹þ¤ß»þ¥³¥Ô¡¼ (copy-on-write) Êý¼°¤Ç¡¢
.BR fork (2)
¤Î¸å¤Ç¿Æ¥×¥í¥»¥¹¤¬¥Ú¡¼¥¸¤Ë½ñ¤­¹þ¤ß¤ò¹Ô¤Ã¤¿¾ì¹ç¤Ë
¥Ú¡¼¥¸¤ÎʪÍý°ÌÃÖ¤¬ÊѲ½¤·¤Ê¤¤¤è¤¦¤Ë¤¹¤ë¤Î¤ËÍ­¸ú¤Ç¤¢¤ë
(¥Ú¡¼¥¸¤ÎºÆÇÛÃ֤ϥϡ¼¥É¥¦¥§¥¢¤¬¤½¤Î¥Ú¡¼¥¸¤Ë DMA žÁ÷¤ò¹Ô¤¦¤è¤¦¤Ê¾ì¹ç¤Ë
ÌäÂê¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë)¡£
.\" [PATCH] madvise MADV_DONTFORK/MADV_DOFORK
.\" Currently, copy-on-write may change the physical address of
.\" a page even if the user requested that the page is pinned in
.\" memory (either by mlock or by get_user_pages). This happens
.\" if the process forks meanwhile, and the parent writes to that
.\" page.  As a result, the page is orphaned: in case of
.\" get_user_pages, the application will never see any data hardware
.\" DMA's into this page after the COW.  In case of mlock'd memory,
.\" the parent is not getting the realtime/security benefits of mlock.
.\"
.\" In particular, this affects the Infiniband modules which do DMA from
.\" and into user pages all the time.
.\"
.\" This patch adds madvise options to control whether memory range is
.\" inherited across fork. Useful e.g. for when hardware is doing DMA
.\" from/into these pages.  Could also be useful to an application
.\" wanting to speed up its forks by cutting large areas out of
.\" consideration.
.\"
.\" SEE ALSO: http://lwn.net/Articles/171941/
.\" "Tweaks to madvise() and posix_fadvise()", 14 Feb 2006
.TP
.\"O .BR MADV_DOFORK " (Since Linux 2.6.16)"
.BR MADV_DOFORK " (Linux 2.6.16 °Ê¹ß)"
.\"O Undo the effect of
.\"O .BR MADV_DONTFORK ,
.\"O restoring the default behavior, whereby a mapping is inherited across
.\"O .BR fork (2).
.B MADV_DONTFORK
¤Î±Æ¶Á¤ò¼è¤ê¾Ã¤·¡¢¥Ç¥Õ¥©¥ë¥È¤ÎÆ°ºî¤ËÌ᤹¡£
¤Ä¤Þ¤ê¡¢
.BR fork (2)
¤ÎÁ°¸å¤Ç¥Þ¥Ã¥Ô¥ó¥°¤Ï·Ñ¾µ¤µ¤ì¤ë¤è¤¦¤Ë¤Ê¤ë¡£
.\"O .SH "RETURN VALUE"
.SH ÊÖ¤êÃÍ
.\"O On success
.\"O .BR madvise ()
.\"O returns zero.
.\"O On error, it returns \-1 and
.\"O .I errno
.\"O is set appropriately.
.BR madvise ()
¤ÏÀ®¸ù¤¹¤ë¤È 0 ¤òÊÖ¤¹¡£
¥¨¥é¡¼¤¬µ¯¤³¤ë¤È \-1 ¤òÊÖ¤·¡¢
.I errno
¤òŬÀÚ¤ÊÃͤËÀßÄꤹ¤ë¡£
.\"O .SH ERRORS
.SH ¥¨¥é¡¼
.TP
.B EAGAIN
.\"O A kernel resource was temporarily unavailable.
²¿¤é¤«¤Î¥«¡¼¥Í¥ë¥ê¥½¡¼¥¹¤¬°ì»þŪ¤ËÍøÍѤǤ­¤Ê¤«¤Ã¤¿¡£
.TP
.B EBADF
.\"O The map exists, but the area maps something that isn't a file.
»ØÄꤷ¤¿¥Þ¥Ã¥×¤Ï¸ºß¤¹¤ë¤¬¡¢¥Õ¥¡¥¤¥ë¤Ç¤Ï¤Ê¤¤¤È¤³¤í¤ò¥Þ¥Ã¥×¤·¤Æ¤¤¤ë¡£
.TP
.B EINVAL
.\"O The value
.\"O .I len
.\"O is negative,
.\" .I len
.\" is zero,
.\"O .I addr
.\"O is not page-aligned,
.\"O .I advice
.\"O is not a valid value, or the application is attempting
.\"O to release locked or shared pages (with
.\"O .BR MADV_DONTNEED ).
.I len
¤ÎÃͤ¬Éé¡¢
.I addr
¤¬¥Ú¡¼¥¸¶­³¦¤Ç¤Ê¤¤¡¢
.I advice
¤¬Àµ¤·¤¤ÃͤǤʤ¤¡¢
¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤¬¥í¥Ã¥¯¤µ¤ì¤¿¥Ú¡¼¥¸¤ä¶¦Í­¥Ú¡¼¥¸¤ò
.RB ( MADV_DONTNEED
¤Ç) ²òÊü¤·¤è¤¦¤È¤·¤Æ¤¤¤ë¡¢¤Ê¤É¡£
.TP
.B EIO
.\"O (for
.\"O .BR MADV_WILLNEED )
.\"O Paging in this area would exceed the process's
.\"O maximum resident set size.
.RB ( MADV_WILLNEED
¤Î¾ì¹ç) ¤³¤ÎÈϰϤΥڡ¼¥¸¥ó¥°¤ò¹Ô¤¦¤È¡¢
¥×¥í¥»¥¹¤Î RSS (resident set size) ¤ÎºÇÂçÃͤò±Û¤¨¤Æ¤·¤Þ¤¦¡£
.\"nakano RSS ¤ÏÌõ¸ì¤¬¤¢¤ê¤Þ¤·¤¿¤Ã¤±?
.TP
.B ENOMEM
.\"O (for
.\"O .BR MADV_WILLNEED )
.\"O Not enough memory: paging in failed.
.RB ( MADV_WILLNEED
¤Î¾ì¹ç) ¥á¥â¥ê¤¬Â­¤ê¤º¡¢¥Ú¡¼¥¸¥ó¥°¤Ë¼ºÇÔ¤·¤¿¡£
.TP
.B ENOMEM
.\"O Addresses in the specified range are not currently
.\"O mapped, or are outside the address space of the process.
»ØÄꤷ¤¿ÈϰϤΥ¢¥É¥ì¥¹¤¬¡¢¸½ºß¥Þ¥Ã¥×¤µ¤ì¤Æ¤¤¤Ê¤¤¡£
¤¢¤ë¤¤¤Ï¥×¥í¥»¥¹¤Î¥¢¥É¥ì¥¹¶õ´Ö¤ÎÆâÉô¤Ë¤Ê¤¤¡£
.\"O .SH "CONFORMING TO"
.SH ½àµò
POSIX.1b.
.\"O POSIX.1-2001 describes
.\"O .BR posix_madvise (3)
.\"O .\" FIXME . Write a posix_fadvise(3) page.
.\"O with constants
.\"O .BR POSIX_MADV_NORMAL ,
.\"O etc.,
.\"O with a behavior close to that described here.
.\"O There is a similar
.\"O .BR posix_fadvise (2)
.\"O for file access.
POSIX.1-2001 ¤Ç¤Ï¡¢
.BR posix_madvise (3)
.\" FIXME . Write a posix_fadvise(3) page.
¤ò
.B POSIX_MADV_NORMAL
¤Ê¤É¤ÎÄê¿ô¤È¤È¤â¤Ëµ­½Ò¤·¤Æ¤¤¤¿
(¤½¤ì¤¾¤ì¤Î¿¶¤ëÉñ¤¤¤Ï¤³¤³¤Ç½Ò¤Ù¤¿¤â¤Î¤Ë¶á¤¤)¡£
¥Õ¥¡¥¤¥ë¥¢¥¯¥»¥¹¤ËÂФ·¤Æ¤â
.BR posix_fadvise (2)
¤È¤¤¤¦Îà»÷¤Î´Ø¿ô¤¬Â¸ºß¤¹¤ë¡£

.\"O .BR MADV_REMOVE ,
.\"O .BR MADV_DONTFORK ,
.\"O and
.\"O .B MADV_DOFORK
.\"O are Linux-specific.
.BR MADV_REMOVE ,
.BR MADV_DONTFORK ,
.B MADV_DOFORK
¤Ï Linux ¸ÇÍ­¤Ç¤¢¤ë¡£
.\"O .SH NOTES
.\"O .SS "Linux Notes"
.SH Ãí°Õ
.SS "Linux ¤Ç¤ÎÃí°Õ"
.\"O .LP
.\"O The current Linux implementation (2.4.0) views this system call
.\"O more as a command than as advice and hence may return an error
.\"O when it cannot do what it usually would do in response to this
.\"O advice.
.\"O (See the ERRORS description above.)
.\"O This is nonstandard behavior.
¸½ºß¤Î Linux ¤Î¼ÂÁõ (2.4.0) ¤Ç¤Ï¡¢
¤³¤Î¥·¥¹¥Æ¥à¥³¡¼¥ë¤ò¥¢¥É¥Ð¥¤¥¹¤È¤¤¤¦¤è¤ê¤ÏÌ¿Îá¤È¸«¤Æ¤¤¤ë¡£
¤·¤¿¤¬¤Ã¤Æ¤³¤Î¥¢¥É¥Ð¥¤¥¹¤ËÂФ·¤ÆÄ̾ï¹Ô¤ï¤ì¤ëÆ°ºî¤¬ÉÔ²Äǽ¤Ê¾ì¹ç¤Ï¡¢
¥¨¥é¡¼¤òÊÖ¤¹¤³¤È¤¬¤¢¤ë (¾åµ­¤Î ¥¨¥é¡¼ ¤Îµ­½Ò¤ò»²¾È)¡£
¤³¤Î¿¶Éñ¤¤¤Ïɸ½à¤È¤Ï°Û¤Ê¤ë¡£
.LP
.\"O The Linux implementation requires that the address
.\"O .I addr
.\"O be page-aligned, and allows
.\"O .I length
.\"O to be zero.
.\"O If there are some parts of the specified address range
.\"O that are not mapped, the Linux version of
.\"O .BR madvise ()
.\"O ignores them and applies the call to the rest (but returns
.\"O .B ENOMEM
.\"O from the system call, as it should).
Linux ¤Î¼ÂÁõ¤Ç¤Ï
.I addr
¤Î¥¢¥É¥ì¥¹¤Ï¥Ú¡¼¥¸¶­³¦¤ÎÃͤǤʤ±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£¤Þ¤¿
.I length
¤Ï 0 ¤Ç¤¢¤Ã¤Æ¤â¹½¤ï¤Ê¤¤¡£
¤Þ¤¿ Linux ÈǤÎ
.BR madvise ()
¤Ç¤Ï¡¢»ØÄꤵ¤ì¤¿¥¢¥É¥ì¥¹ÈϰϤ˥ޥåפµ¤ì¤Æ¤¤¤Ê¤¤Éôʬ¤¬¤¢¤ë¤È¡¢
¤³¤ì¤é¤ò̵»ë¤·¤Æ»Ä¤ê¤ÎÉôʬ¤Ë¥¢¥É¥Ð¥¤¥¹¤òŬÍѤ¹¤ë
(¤·¤«¤·¥·¥¹¥Æ¥à¥³¡¼¥ë¤ËÂФ·¤Æ¤Ï¤Á¤ã¤ó¤È
.B ENOMEM
¤òÊÖ¤¹)¡£
.\"O .\" .SH HISTORY
.\" .SH Îò»Ë
.\"O .\" The
.\"O .\" .BR madvise ()
.\"O .\" function first appeared in 4.4BSD.
.\" .BR madvise ()
.\" ´Ø¿ô¤Ï 4.4BSD ¤ÇºÇ½é¤ËÅо줷¤¿¡£
.\"O .SH "SEE ALSO"
.SH ´ØÏ¢¹àÌÜ
.BR getrlimit (2),
.BR mincore (2),
.BR mmap (2),
.BR mprotect (2),
.BR msync (2),
.BR munmap (2)