Minor updates

diff --git a/man2/ioprio_set.2 b/man2/ioprio_set.2
index 581c793a4165b261285c923fc8aa218cc89a658f..8f695b2df8ba41fb15175c31c77e62094a47be42 100644 (file)
--- a/man2/ioprio_set.2
+++ b/man2/ioprio_set.2
@@ -1,38 +1,26 @@
 .\" This is _*_ nroff _*_ source. Emacs, gimme all those colors :)
 .\"
-.\" Copyright (c) International Business Machines  Corp., 2006
+.\" Copyright (c) International Business Machines orp., 2006
 .\"
-.\" This program is free software;  you can redistribute it and/or
+.\" This program is free software; you can redistribute it and/or
 .\" modify it under the terms of the GNU General Public License as
 .\" published by the Free Software Foundation; either version 2 of
 .\" the License, or (at your option) any later version.
 .\"
 .\" This program is distributed in the hope that it will be useful,
-.\" but WITHOUT ANY WARRANTY;  without even the implied warranty of
-.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
 .\" the GNU General Public License for more details.
 .\"
 .\" You should have received a copy of the GNU General Public License
-.\" along with this program;  if not, write to the Free Software
+.\" along with this program; if not, write to the Free Software
 .\" Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 .\" MA 02111-1307 USA
 .\"
 .\" HISTORY:
 .\" 2006-04-27, created by Eduardo M. Fleury <efleury@br.ibm.com>
-.\"   with various additions by Michael Kerrisk <mtk-manpages@gmx.net>
+.\" with various additions by Michael Kerrisk <mtk-manpages@gmx.net>
 .\"
-.\" FIXME Documentation/block/ioprio.txt says:
-.\"    With the introduction of cfq v3 (aka cfq-ts or time sliced
-.\"    cfq), basic io priorities is supported for reads on files.
-.\" Does some of this text need to be worked into the man page?
-.\" Especially "supported for reads on files".
-.\"
-.\" FIXME
-.\" We have some general problems:
-.\" These calls aren't in glibc yet.  Why aren't they there yet?
-.\" Ask Jens Axboe about this.  Perhaps something needs to be pushed
-.\" to Ulrich Drepper so that suitable stuff ends up in the glibc
-.\" tree.
 .\"
 .TH IOPRIO_GET 2 2006-04-27 "2.6.13" "Linux Programmer's Manual"
 .SH NAME
@@ -103,7 +91,7 @@ is the highest priority class;
 .B IOPRIO_CLASS_IDLE
 is the lowest)
 or if it belongs to the same priority class as the other process but
-has a lower priority number (a lower priority number means a
+has a higher priority level (a lower priority number means a
 higher priority level).
 
 The
@@ -148,6 +136,12 @@ component.
 .PP
 See the NOTES section for more
 information on scheduling classes and priorities.
+
+I/O priorities are supported for reads and for synchronous (O_DIRECT,
+O_SYNC) writes. I/O priorities are not supported for asynchronous
+writes because they are issued outside the context of the program
+dirtying the memory, and thus program-specific priorities do not apply.
+
 .SH "RETURN VALUE"
 On success,
 .BR ioprio_get ()
@@ -195,7 +189,7 @@ classes and priority levels for
 .SH NOTES
 These system calls only have an effect when used
 in conjunction with an I/O scheduler that supports I/O priorities.
-As at kernel 2.6.16 the only such scheduler is the Completely Fair Queuing
+As at kernel 2.6.17 the only such scheduler is the Completely Fair Queuing
 (CFQ) I/O scheduler.
 .SS "Selecting an I/O Scheduler"
 I/O Schedulers are selected on a per-device basis via the special
@@ -315,6 +309,6 @@ Suitable definitions can be found in
 These system calls have been available on Linux since
 kernel 2.6.13.
 .SH "SEE ALSO"
-.BR getpriority "(2), " capabilities (7)
+.BR getpriority "(2), " open "(2), " capabilities (7)
 .sp
 Documentation/block/ioprio.txt in the kernel source tree.