[src/trunk]: src/share/man/man9 Mention B_WRITE.

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a19ac9d3f414
branches:  trunk
changeset: 337002:a19ac9d3f414
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Mar 29 21:08:36 2015 +0000

description:
Mention B_WRITE.

diffstat:

 share/man/man9/bufferio.9 |  5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diffs (19 lines):

diff -r 84aec0848c16 -r a19ac9d3f414 share/man/man9/bufferio.9
--- a/share/man/man9/bufferio.9 Sun Mar 29 21:08:08 2015 +0000
+++ b/share/man/man9/bufferio.9 Sun Mar 29 21:08:36 2015 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: bufferio.9,v 1.4 2015/03/29 21:08:08 riastradh Exp $
+.\"    $NetBSD: bufferio.9,v 1.5 2015/03/29 21:08:36 riastradh Exp $
 .\"
 .\" Copyright (c) 2015 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -96,6 +96,9 @@
 and must not call
 .Fn biowait bp .
 .El
+For legibility, callers should indicate writes by passing the
+pseudo-flag
+.Dv B_WRITE ,
 which is zero.
 .It Fa bp Ns Li "->b_data"
 Pointer to kernel virtual address of source/target for transfer.