From 7ab672ce312133ee4a5d85b71447b2b334403681 Mon Sep 17 00:00:00 2001 From: Dean Hildebrand Date: Wed, 20 Oct 2010 00:18:00 -0400 Subject: NFSv4.1: pnfs: filelayout: introduce minimal file layout driver This driver just registers itself and supplies trivial mount/umount functions. Signed-off-by: Dean Hildebrand Signed-off-by: Marc Eshel Signed-off-by: Benny Halevy Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- fs/nfs/nfs4filelayout.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 fs/nfs/nfs4filelayout.c (limited to 'fs/nfs/nfs4filelayout.c') diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c new file mode 100644 index 000000000000..696e283c2632 --- /dev/null +++ b/fs/nfs/nfs4filelayout.c @@ -0,0 +1,78 @@ +/* + * Module for the pnfs nfs4 file layout driver. + * Defines all I/O and Policy interface operations, plus code + * to register itself with the pNFS client. + * + * Copyright (c) 2002 + * The Regents of the University of Michigan + * All Rights Reserved + * + * Dean Hildebrand + * + * Permission is granted to use, copy, create derivative works, and + * redistribute this software and such derivative works for any purpose, + * so long as the name of the University of Michigan is not used in + * any advertising or publicity pertaining to the use or distribution + * of this software without specific, written prior authorization. If + * the above copyright notice or any other identification of the + * University of Michigan is included in any copy of any portion of + * this software, then the disclaimer below must also be included. + * + * This software is provided as is, without representation or warranty + * of any kind either express or implied, including without limitation + * the implied warranties of merchantability, fitness for a particular + * purpose, or noninfringement. The Regents of the University of + * Michigan shall not be liable for any damages, including special, + * indirect, incidental, or consequential damages, with respect to any + * claim arising out of or in connection with the use of the software, + * even if it has been or is hereafter advised of the possibility of + * such damages. + */ + +#include +#include "pnfs.h" + +#define NFSDBG_FACILITY NFSDBG_PNFS_LD + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Dean Hildebrand "); +MODULE_DESCRIPTION("The NFSv4 file layout driver"); + +int +filelayout_initialize_mountpoint(struct nfs_server *nfss) +{ + return 0; +} + +int +filelayout_uninitialize_mountpoint(struct nfs_server *nfss) +{ + dprintk("--> %s\n", __func__); + + return 0; +} + +static struct pnfs_layoutdriver_type filelayout_type = { + .id = LAYOUT_NFSV4_1_FILES, + .name = "LAYOUT_NFSV4_1_FILES", + .owner = THIS_MODULE, + .initialize_mountpoint = filelayout_initialize_mountpoint, + .uninitialize_mountpoint = filelayout_uninitialize_mountpoint, +}; + +static int __init nfs4filelayout_init(void) +{ + printk(KERN_INFO "%s: NFSv4 File Layout Driver Registering...\n", + __func__); + return pnfs_register_layoutdriver(&filelayout_type); +} + +static void __exit nfs4filelayout_exit(void) +{ + printk(KERN_INFO "%s: NFSv4 File Layout Driver Unregistering...\n", + __func__); + pnfs_unregister_layoutdriver(&filelayout_type); +} + +module_init(nfs4filelayout_init); +module_exit(nfs4filelayout_exit); -- cgit v1.2.3