From 0a896094c61fa1eec7dbb5bb35485747cdc1549d Mon Sep 17 00:00:00 2001
From: Christof Schmitt <christof.schmitt@us.ibm.com>
Date: Thu, 8 Mar 2012 13:57:12 -0800
Subject: s3:vfs_gpfs: Implement fallocate callback for GPFS

GPFS provides the gpfs_prealloc call. Implement the fallocate
callback with mode VFS_FALLOCATE_EXTEND_SIZE using this call.
There is no support for VFS_FALLOCATE_KEEP_SIZE, so report
this mode as not available.
---
 docs-xml/manpages-3/vfs_gpfs.8.xml | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'docs-xml/manpages-3/vfs_gpfs.8.xml')

diff --git a/docs-xml/manpages-3/vfs_gpfs.8.xml b/docs-xml/manpages-3/vfs_gpfs.8.xml
index 398dcff255..4ea8c4d046 100644
--- a/docs-xml/manpages-3/vfs_gpfs.8.xml
+++ b/docs-xml/manpages-3/vfs_gpfs.8.xml
@@ -268,6 +268,31 @@
 		</varlistentry>
 		<varlistentry>
 
+		<term>gpfs:prealloc = [ yes | no ]</term>
+		<listitem>
+		<para>
+		If set to yes the gpfs_prealloc function will be used in the
+		fallocate callback when appropriate. If set to no gpfs_prealloc
+		will not be used. In both cases the system and libc calls are
+		avoided.
+		</para>
+
+		<itemizedlist>
+		<listitem><para>
+		<command>yes (default)</command> - Use gpfs_prealloc for the
+		fallocate callback.
+		</para></listitem>
+		<listitem><para>
+		<command>no</command> - Do not use gpfs_prealloc for the
+		fallocate callback.
+		</para></listitem>
+		</itemizedlist>
+		</listitem>
+
+		</varlistentry>
+
+		<varlistentry>
+
 		<term>nfs4:mode = [ simple | special ]</term>
 		<listitem>
 		<para>
-- 
cgit