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authorBenny Halevy <bhalevy@panasas.com>2011-05-22 12:49:06 -0400
committerBoaz Harrosh <bharrosh@panasas.com>2011-05-29 13:52:35 -0400
commitc93407d03c3ccf60b33a309e5fcd41cd98969901 (patch)
tree9ef9cfb8a2c8dd7ae05960469bfef0d396363dc4 /fs/nfs/objlayout
parentae50c0b5c6f6fa340f1fe2d244b358145f7e5a15 (diff)
pnfs-obj: objlayoutdriver module skeleton
* Define the PNFS_OBJLAYOUT Kconfig option in the nfs master Kconfig file. * Add the objlayout driver to the Kernel's Kbuild system. * Add the fs/nfs/objlayout/Kbuild file for building the objlayoutdriver.ko driver * Define fs/nfs/objlayout/objio_osd.c, register the driver on module initialization and unregister on exit. [pnfs-obj: remove of CONFIG_PNFS fallout] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [added "unsure" clause] [depend on NFS_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'fs/nfs/objlayout')
-rw-r--r--fs/nfs/objlayout/Kbuild5
-rw-r--r--fs/nfs/objlayout/objio_osd.c76
2 files changed, 81 insertions, 0 deletions
diff --git a/fs/nfs/objlayout/Kbuild b/fs/nfs/objlayout/Kbuild
new file mode 100644
index 000000000000..2e5b9a44773c
--- /dev/null
+++ b/fs/nfs/objlayout/Kbuild
@@ -0,0 +1,5 @@
1#
2# Makefile for the pNFS Objects Layout Driver kernel module
3#
4objlayoutdriver-y := objio_osd.o
5obj-$(CONFIG_PNFS_OBJLAYOUT) += objlayoutdriver.o
diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c
new file mode 100644
index 000000000000..379595f2d1cc
--- /dev/null
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -0,0 +1,76 @@
1/*
2 * pNFS Objects layout implementation over open-osd initiator library
3 *
4 * Copyright (C) 2009 Panasas Inc. [year of first publication]
5 * All rights reserved.
6 *
7 * Benny Halevy <bhalevy@panasas.com>
8 * Boaz Harrosh <bharrosh@panasas.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * See the file COPYING included with this distribution for more details.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 *
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 * 3. Neither the name of the Panasas company nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
28 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
29 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
30 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
34 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#include <linux/module.h>
41#include "../pnfs.h"
42
43static struct pnfs_layoutdriver_type objlayout_type = {
44 .id = LAYOUT_OSD2_OBJECTS,
45 .name = "LAYOUT_OSD2_OBJECTS",
46};
47
48MODULE_DESCRIPTION("pNFS Layout Driver for OSD2 objects");
49MODULE_AUTHOR("Benny Halevy <bhalevy@panasas.com>");
50MODULE_LICENSE("GPL");
51
52static int __init
53objlayout_init(void)
54{
55 int ret = pnfs_register_layoutdriver(&objlayout_type);
56
57 if (ret)
58 printk(KERN_INFO
59 "%s: Registering OSD pNFS Layout Driver failed: error=%d\n",
60 __func__, ret);
61 else
62 printk(KERN_INFO "%s: Registered OSD pNFS Layout Driver\n",
63 __func__);
64 return ret;
65}
66
67static void __exit
68objlayout_exit(void)
69{
70 pnfs_unregister_layoutdriver(&objlayout_type);
71 printk(KERN_INFO "%s: Unregistered OSD pNFS Layout Driver\n",
72 __func__);
73}
74
75module_init(objlayout_init);
76module_exit(objlayout_exit);