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mmap.2: Add brief documentation of MAP_HUGETLB 

This flag is new in 2.6.32, and serves a similar
purpose to the shmget() SHM_HUGETLB flag.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2009-09-26 06:39:36 +02:00
parent 015221eff8
commit 76a34baa39
1 changed files with 7 additions and 1 deletions
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8
man2/mmap.2
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@ -37,7 +37,7 @@
.\" 2007-07-10, mtk, Added an example program.
.\" 2008-11-18, mtk, document MAP_STACK
.\"
.TH MMAP 2 2008-12-01 "Linux" "Linux Programmer's Manual"
.TH MMAP 2 2009-09-26 "Linux" "Linux Programmer's Manual"
.SH NAME
mmap, munmap \- map or unmap files or devices into memory
.SH SYNOPSIS
@ -226,6 +226,12 @@ Used for stacks.
Indicates to the kernel virtual memory system that the mapping
should extend downwards in memory.
.TP
.BR MAP_HUGETLB " (since Linux 2.6.32)"
Allocate the mapping using "huge pages."
See the kernel source file
.I Documentation/vm/hugetlbpage.txt
for further information.
.TP
.BR MAP_LOCKED " (since Linux 2.5.37)"
Lock the pages of the mapped region into memory in the manner of
.BR mlock (2).