NFSv4.1: pnfs: filelayout: introduce minimal file layout driver (7ab672ce) · Commits · 戴 / test

fs/nfs/Makefile

+3 −0

Original line number	Diff line number	Diff line
		@@ -18,3 +18,6 @@ nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
		nfs-$(CONFIG_NFS_V4_1) += pnfs.o
		nfs-$(CONFIG_SYSCTL) += sysctl.o
		nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o

		obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o
		nfs_layout_nfsv41_files-y := nfs4filelayout.o

fs/nfs/nfs4filelayout.c

0 → 100644

+78 −0

Original line number	Diff line number	Diff line
		/*
		* 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 <dhildebz@umich.edu>
		*
		* 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 <linux/nfs_fs.h>
		#include "pnfs.h"

		#define NFSDBG_FACILITY NFSDBG_PNFS_LD

		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Dean Hildebrand <dhildebz@umich.edu>");
		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);

include/linux/nfs_fs.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -616,6 +616,7 @@ nfs_fileid_to_ino_t(u64 fileid)
		#define NFSDBG_MOUNT 0x0400
		#define NFSDBG_FSCACHE 0x0800
		#define NFSDBG_PNFS 0x1000
		#define NFSDBG_PNFS_LD 0x2000
		#define NFSDBG_ALL 0xFFFF

		#ifdef __KERNEL__

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