diff options
| author | Ted Unangst <tedu@cvs.openbsd.org> | 2015-10-29 12:03:47 +0000 |
|---|---|---|
| committer | Ted Unangst <tedu@cvs.openbsd.org> | 2015-10-29 12:03:47 +0000 |
| commit | 50f8581e2f24009ef8510fc2aad1bdc861389a20 (patch) | |
| tree | cd3e3ebdb0472cd4cc4636fc0b78c6ca46b17cbf /lib/libc | |
| parent | 6c0eaa4eab312f87ef3562152378dabe1c005fc8 (diff) | |
update text to be more like posix, in particular wrt length = 0
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/sys/msync.2 | 27 |
1 files changed, 9 insertions, 18 deletions
diff --git a/lib/libc/sys/msync.2 b/lib/libc/sys/msync.2 index 2ca4ced63d1..bc139cbbde2 100644 --- a/lib/libc/sys/msync.2 +++ b/lib/libc/sys/msync.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: msync.2,v 1.24 2015/03/13 19:58:40 jmc Exp $ +.\" $OpenBSD: msync.2,v 1.25 2015/10/29 12:03:46 tedu Exp $ .\" $NetBSD: msync.2,v 1.8 1995/10/12 15:41:09 jtc Exp $ .\" .\" Copyright (c) 1991, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)msync.2 8.1 (Berkeley) 6/9/93 .\" -.Dd $Mdocdate: March 13 2015 $ +.Dd $Mdocdate: October 29 2015 $ .Dt MSYNC 2 .Os .Sh NAME @@ -44,22 +44,13 @@ The .Fn msync system call writes all pages with shared modifications -in the specified -region of the process's address space back to permanent -storage and, if requested, invalidates cached data mapped -in the region. -If -.Fa len -is 0, all modified pages within the region containing -.Fa addr -will be flushed; -if -.Fa len -is non-zero, only modified pages containing -.Fa addr -and -.Fa len-1 -succeeding locations will be flushed. +in the specified region starting from +.Ar addr +and continuing for +.Ar len +bytes. +.Ar addr +should be a multiple of the page size. Any required synchronization of memory caches will also take place at this time. Filesystem operations on a file that is mapped for shared modifications |