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Add degframentation exclusion support
Merge of xfs-linux-melb:xfs-kern:25986a by kenmcd.

  Add nodefrag tuneable to xfs_params

/*
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include "xfs.h"
#include "xfs_cred.h"
#include "xfs_sysctl.h"

/*
 * System memory size - used to scale certain data structures in XFS.
 */
unsigned long xfs_physmem;

/*
 * Tunable XFS parameters.  xfs_params is required even when CONFIG_SYSCTL=n,
 * other XFS code uses these values.  Times are measured in centisecs (i.e.
 * 100ths of a second).
 */
xfs_param_t xfs_params = {
			  /*	MIN		DFLT		MAX	*/
	.restrict_chown	= {	0,		1,		1	},
	.sgid_inherit	= {	0,		0,		1	},
	.symlink_mode	= {	0,		0,		1	},
	.panic_mask	= {	0,		0,		127	},
	.error_level	= {	0,		3,		11	},
	.syncd_timer	= {	1*100,		30*100,		7200*100},
	.probe_dmapi	= {	0,		0,		1	},
	.probe_ioops	= {	0,		0,		1	},
	.probe_quota	= {	0,		1,		1	},
	.stats_clear	= {	0,		0,		1	},
	.inherit_sync	= {	0,		1,		1	},
	.inherit_nodump	= {	0,		1,		1	},
	.inherit_noatim = {	0,		1,		1	},
	.xfs_buf_timer	= {	100/2,		1*100,		30*100	},
	.xfs_buf_age	= {	1*100,		15*100,		7200*100},
	.inherit_nosym	= {	0,		0,		1	},
	.rotorstep	= {	1,		1,		255	},
	.inherit_nodfrg	= {	0,		1,		1	},
};

/*
 * Global system credential structure.
 */
cred_t sys_cred_val, *sys_cred = &sys_cred_val;