prctl.2: ffix

[thirdparty/man-pages.git] / man2 / mmap2.2

diff --git a/man2/mmap2.2 b/man2/mmap2.2
index d74ee6203aa7624425f3cc818d0aad8358117de5..c571cc3021c61be1e159b2b5676178d6fcb58a90 100644 (file)
--- a/man2/mmap2.2
+++ b/man2/mmap2.2
@@ -26,21 +26,21 @@
 .\"    Added description of mmap2
 .\" Modified, 2004-11-25, mtk -- removed stray #endif in prototype
 .\"
-.TH MMAP2 2 2012-04-16 "Linux" "Linux Programmer's Manual"
+.TH MMAP2 2 2017-09-15 "Linux" "Linux Programmer's Manual"
 .SH NAME
 mmap2 \- map files or devices into memory
 .SH SYNOPSIS
 .nf
 .B #include <sys/mman.h>
-.sp
+.PP
 .BI "void *mmap2(void *" addr ", size_t " length ", int " prot ,
 .BI "             int " flags ", int " fd ", off_t " pgoffset );
 .fi
 .SH DESCRIPTION
-This is probably not the system call you are interested; instead, see
+This is probably not the system call that you are interested in; instead, see
 .BR mmap (2),
 which describes the glibc wrapper function that invokes this system call.
-
+.PP
 The
 .BR mmap2 ()
 system call provides the same interface as
@@ -55,7 +55,7 @@ to map large files (up to 2^44 bytes).
 On success,
 .BR mmap2 ()
 returns a pointer to the mapped area.
-On error \-1 is returned and
+On error, \-1 is returned and
 .I errno
 is set appropriately.
 .SH ERRORS
@@ -65,7 +65,7 @@ Problem with getting the data from user space.
 .TP
 .B EINVAL
 (Various platforms where the page size is not 4096 bytes.)
-.I offset * 4096
+.I "offset\ *\ 4096"
 is not a multiple of the system page size.
 .PP
 .BR mmap2 ()
@@ -77,16 +77,19 @@ is available since Linux 2.3.31.
 .SH CONFORMING TO
 This system call is Linux-specific.
 .SH NOTES
-Nowadays, the glibc
+On architectures where this system call is present,
+the glibc
 .BR mmap ()
 wrapper function invokes this system call rather than the
 .BR mmap (2)
 system call.
-
+.PP
+This system call does not exist on x86-64.
+.PP
 On ia64, the unit for
 .I offset
 is actually the system page size, rather than 4096 bytes.
-.\" ia64 can have page sizes ranging from 4kB to 64kB.
+.\" ia64 can have page sizes ranging from 4 kB to 64 kB.
 .\" On cris, it looks like the unit might also be the page size,
 .\" which is 8192 bytes. -- mtk, June 2007
 .SH SEE ALSO