fs/nfs/objlayout/objio_osd.c

   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
  43 static struct pnfs_layoutdriver_type objlayout_type = {
  44         .id = LAYOUT_OSD2_OBJECTS,
  45         .name = "LAYOUT_OSD2_OBJECTS",
  46 };
  47
  48 MODULE_DESCRIPTION("pNFS Layout Driver for OSD2 objects");
  49 MODULE_AUTHOR("Benny Halevy <bhalevy@panasas.com>");
  50 MODULE_LICENSE("GPL");
  51
  52 static int __init
  53 objlayout_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
  67 static void __exit
  68 objlayout_exit(void)
  69 {
  70         pnfs_unregister_layoutdriver(&objlayout_type);
  71         printk(KERN_INFO "%s: Unregistered OSD pNFS Layout Driver\n",
  72                __func__);
  73 }
  74
  75 module_init(objlayout_init);
  76 module_exit(objlayout_exit);