[deliverable/linux.git] / fs / gfs2 / ops_super.c

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License v.2.
 */

#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/statfs.h>
#include <linux/vmalloc.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/gfs2_ondisk.h>

#include "gfs2.h"
#include "lm_interface.h"
#include "incore.h"
#include "glock.h"
#include "inode.h"
#include "lm.h"
#include "log.h"
#include "mount.h"
#include "ops_super.h"
#include "page.h"
#include "quota.h"
#include "recovery.h"
#include "rgrp.h"
#include "super.h"
#include "sys.h"
#include "util.h"

/**
 * gfs2_write_inode - Make sure the inode is stable on the disk
 * @inode: The inode
 * @sync: synchronous write flag
 *
 * Returns: errno
 */

static int gfs2_write_inode(struct inode *inode, int sync)
{
	struct gfs2_inode *ip = inode->u.generic_ip;

	if (current->flags & PF_MEMALLOC)
		return 0;
	if (ip && sync)
		gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);

	return 0;
}

/**
 * gfs2_put_super - Unmount the filesystem
 * @sb: The VFS superblock
 *
 */

static void gfs2_put_super(struct super_block *sb)
{
	struct gfs2_sbd *sdp = sb->s_fs_info;
	int error;

	if (!sdp)
		return;

	/*  Unfreeze the filesystem, if we need to  */

	mutex_lock(&sdp->sd_freeze_lock);
	if (sdp->sd_freeze_count)
		gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
	mutex_unlock(&sdp->sd_freeze_lock);

	kthread_stop(sdp->sd_inoded_process);
	kthread_stop(sdp->sd_quotad_process);
	kthread_stop(sdp->sd_logd_process);
	kthread_stop(sdp->sd_recoverd_process);
	while (sdp->sd_glockd_num--)
		kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
	kthread_stop(sdp->sd_scand_process);

	if (!(sb->s_flags & MS_RDONLY)) {
		error = gfs2_make_fs_ro(sdp);
		if (error)
			gfs2_io_error(sdp);
	}
	/*  At this point, we're through modifying the disk  */

	/*  Release stuff  */

	iput(sdp->sd_master_dir);
	iput(sdp->sd_jindex);
	iput(sdp->sd_inum_inode);
	iput(sdp->sd_statfs_inode);
	iput(sdp->sd_rindex);
	iput(sdp->sd_quota_inode);

	gfs2_glock_put(sdp->sd_rename_gl);
	gfs2_glock_put(sdp->sd_trans_gl);

	if (!sdp->sd_args.ar_spectator) {
		gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
		gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
		gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
		gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
		gfs2_glock_dq_uninit(&sdp->sd_ut_gh);
		gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
		iput(sdp->sd_ir_inode);
		iput(sdp->sd_sc_inode);
		iput(sdp->sd_ut_inode);
		iput(sdp->sd_qc_inode);
	}

	gfs2_glock_dq_uninit(&sdp->sd_live_gh);
	gfs2_clear_rgrpd(sdp);
	gfs2_jindex_free(sdp);
	/*  Take apart glock structures and buffer lists  */
	gfs2_gl_hash_clear(sdp, WAIT);
	/*  Unmount the locking protocol  */
	gfs2_lm_unmount(sdp);

	/*  At this point, we're through participating in the lockspace  */
	gfs2_sys_fs_del(sdp);
	vfree(sdp);
	sb->s_fs_info = NULL;
}

/**
 * gfs2_write_super - disk commit all incore transactions
 * @sb: the filesystem
 *
 * This function is called every time sync(2) is called.
 * After this exits, all dirty buffers are synced.
 */

static void gfs2_write_super(struct super_block *sb)
{
	struct gfs2_sbd *sdp = sb->s_fs_info;
	gfs2_log_flush(sdp, NULL);
}

/**
 * gfs2_write_super_lockfs - prevent further writes to the filesystem
 * @sb: the VFS structure for the filesystem
 *
 */

static void gfs2_write_super_lockfs(struct super_block *sb)
{
	struct gfs2_sbd *sdp = sb->s_fs_info;
	int error;

	for (;;) {
		error = gfs2_freeze_fs(sdp);
		if (!error)
			break;

		switch (error) {
		case -EBUSY:
			fs_err(sdp, "waiting for recovery before freeze\n");
			break;

		default:
			fs_err(sdp, "error freezing FS: %d\n", error);
			break;
		}

		fs_err(sdp, "retrying...\n");
		msleep(1000);
	}
}

/**
 * gfs2_unlockfs - reallow writes to the filesystem
 * @sb: the VFS structure for the filesystem
 *
 */

static void gfs2_unlockfs(struct super_block *sb)
{
	struct gfs2_sbd *sdp = sb->s_fs_info;
	gfs2_unfreeze_fs(sdp);
}

/**
 * gfs2_statfs - Gather and return stats about the filesystem
 * @sb: The superblock
 * @statfsbuf: The buffer
 *
 * Returns: 0 on success or error code
 */

static int gfs2_statfs(struct super_block *sb, struct kstatfs *buf)
{
	struct gfs2_sbd *sdp = sb->s_fs_info;
	struct gfs2_statfs_change sc;
	int error;

	if (gfs2_tune_get(sdp, gt_statfs_slow))
		error = gfs2_statfs_slow(sdp, &sc);
	else
		error = gfs2_statfs_i(sdp, &sc);

	if (error)
		return error;

	memset(buf, 0, sizeof(struct kstatfs));

	buf->f_type = GFS2_MAGIC;
	buf->f_bsize = sdp->sd_sb.sb_bsize;
	buf->f_blocks = sc.sc_total;
	buf->f_bfree = sc.sc_free;
	buf->f_bavail = sc.sc_free;
	buf->f_files = sc.sc_dinodes + sc.sc_free;
	buf->f_ffree = sc.sc_free;
	buf->f_namelen = GFS2_FNAMESIZE;

	return 0;
}

/**
 * gfs2_remount_fs - called when the FS is remounted
 * @sb:  the filesystem
 * @flags:  the remount flags
 * @data:  extra data passed in (not used right now)
 *
 * Returns: errno
 */

static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data)
{
	struct gfs2_sbd *sdp = sb->s_fs_info;
	int error;

	error = gfs2_mount_args(sdp, data, 1);
	if (error)
		return error;

	if (sdp->sd_args.ar_spectator)
		*flags |= MS_RDONLY;
	else {
		if (*flags & MS_RDONLY) {
			if (!(sb->s_flags & MS_RDONLY))
				error = gfs2_make_fs_ro(sdp);
		} else if (!(*flags & MS_RDONLY) &&
			   (sb->s_flags & MS_RDONLY)) {
			error = gfs2_make_fs_rw(sdp);
		}
	}

	if (*flags & (MS_NOATIME | MS_NODIRATIME))
		set_bit(SDF_NOATIME, &sdp->sd_flags);
	else
		clear_bit(SDF_NOATIME, &sdp->sd_flags);

	/* Don't let the VFS update atimes.  GFS2 handles this itself. */
	*flags |= MS_NOATIME | MS_NODIRATIME;

	return error;
}

/**
 * gfs2_clear_inode - Deallocate an inode when VFS is done with it
 * @inode: The VFS inode
 *
 */

static void gfs2_clear_inode(struct inode *inode)
{
	struct gfs2_inode *ip = inode->u.generic_ip;

	if (ip) {
		spin_lock(&ip->i_spin);
		ip->i_vnode = NULL;
		inode->u.generic_ip = NULL;
		spin_unlock(&ip->i_spin);

		gfs2_glock_schedule_for_reclaim(ip->i_gl);
		gfs2_inode_put(ip);
	}
}

/**
 * gfs2_show_options - Show mount options for /proc/mounts
 * @s: seq_file structure
 * @mnt: vfsmount
 *
 * Returns: 0 on success or error code
 */

static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
{
	struct gfs2_sbd *sdp = mnt->mnt_sb->s_fs_info;
	struct gfs2_args *args = &sdp->sd_args;

	if (args->ar_lockproto[0])
		seq_printf(s, ",lockproto=%s", args->ar_lockproto);
	if (args->ar_locktable[0])
		seq_printf(s, ",locktable=%s", args->ar_locktable);
	if (args->ar_hostdata[0])
		seq_printf(s, ",hostdata=%s", args->ar_hostdata);
	if (args->ar_spectator)
		seq_printf(s, ",spectator");
	if (args->ar_ignore_local_fs)
		seq_printf(s, ",ignore_local_fs");
	if (args->ar_localflocks)
		seq_printf(s, ",localflocks");
	if (args->ar_localcaching)
		seq_printf(s, ",localcaching");
	if (args->ar_debug)
		seq_printf(s, ",debug");
	if (args->ar_upgrade)
		seq_printf(s, ",upgrade");
	if (args->ar_num_glockd != GFS2_GLOCKD_DEFAULT)
		seq_printf(s, ",num_glockd=%u", args->ar_num_glockd);
	if (args->ar_posix_acl)
		seq_printf(s, ",acl");
	if (args->ar_quota != GFS2_QUOTA_DEFAULT) {
		char *state;
		switch (args->ar_quota) {
		case GFS2_QUOTA_OFF:
			state = "off";
			break;
		case GFS2_QUOTA_ACCOUNT:
			state = "account";
			break;
		case GFS2_QUOTA_ON:
			state = "on";
			break;
		default:
			state = "unknown";
			break;
		}
		seq_printf(s, ",quota=%s", state);
	}
	if (args->ar_suiddir)
		seq_printf(s, ",suiddir");
	if (args->ar_data != GFS2_DATA_DEFAULT) {
		char *state;
		switch (args->ar_data) {
		case GFS2_DATA_WRITEBACK:
			state = "writeback";
			break;
		case GFS2_DATA_ORDERED:
			state = "ordered";
			break;
		default:
			state = "unknown";
			break;
		}
		seq_printf(s, ",data=%s", state);
	}

	return 0;
}

struct super_operations gfs2_super_ops = {
	.write_inode = gfs2_write_inode,
	.put_super = gfs2_put_super,
	.write_super = gfs2_write_super,
	.write_super_lockfs = gfs2_write_super_lockfs,
	.unlockfs = gfs2_unlockfs,
	.statfs = gfs2_statfs,
	.remount_fs = gfs2_remount_fs,
	.clear_inode = gfs2_clear_inode,
	.show_options = gfs2_show_options,
};
Commit	Line	Data
b3b94faa DT	1	/*
b3b94faa DT	2	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3a8a9a10	3	* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
b3b94faa DT	4	*
	5	* This copyrighted material is made available to anyone wishing to use,
	6	* modify, copy, or redistribute it subject to the terms and conditions
	7	* of the GNU General Public License v.2.
	8	*/
	9
	10	#include <linux/sched.h>
	11	#include <linux/slab.h>
	12	#include <linux/spinlock.h>
	13	#include <linux/completion.h>
	14	#include <linux/buffer_head.h>
b3b94faa	15	#include <linux/statfs.h>
d92a8d48	16	#include <linux/vmalloc.h>
b3b94faa DT	17	#include <linux/seq_file.h>
	18	#include <linux/mount.h>
	19	#include <linux/kthread.h>
	20	#include <linux/delay.h>
5c676f6d	21	#include <linux/gfs2_ondisk.h>
b3b94faa DT	22
b3b94faa DT	23	#include "gfs2.h"
5c676f6d SW	24	#include "lm_interface.h"
5c676f6d SW	25	#include "incore.h"
b3b94faa DT	26	#include "glock.h"
	27	#include "inode.h"
	28	#include "lm.h"
	29	#include "log.h"
	30	#include "mount.h"
	31	#include "ops_super.h"
	32	#include "page.h"
	33	#include "quota.h"
	34	#include "recovery.h"
	35	#include "rgrp.h"
	36	#include "super.h"
	37	#include "sys.h"
5c676f6d	38	#include "util.h"
b3b94faa DT	39
	40	/**
	41	* gfs2_write_inode - Make sure the inode is stable on the disk
	42	* @inode: The inode
	43	* @sync: synchronous write flag
	44	*
	45	* Returns: errno
	46	*/
	47
	48	static int gfs2_write_inode(struct inode *inode, int sync)
	49	{
5c676f6d	50	struct gfs2_inode *ip = inode->u.generic_ip;
b3b94faa	51
b3b94faa DT	52	if (current->flags & PF_MEMALLOC)
	53	return 0;
	54	if (ip && sync)
b09e593d	55	gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
b3b94faa DT	56
	57	return 0;
	58	}
	59
	60	/**
	61	* gfs2_put_super - Unmount the filesystem
	62	* @sb: The VFS superblock
	63	*
	64	*/
	65
	66	static void gfs2_put_super(struct super_block *sb)
	67	{
5c676f6d	68	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	69	int error;
	70
	71	if (!sdp)
	72	return;
	73
b3b94faa DT	74	/* Unfreeze the filesystem, if we need to */
b3b94faa DT	75
f55ab26a	76	mutex_lock(&sdp->sd_freeze_lock);
b3b94faa DT	77	if (sdp->sd_freeze_count)
b3b94faa DT	78	gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
f55ab26a	79	mutex_unlock(&sdp->sd_freeze_lock);
b3b94faa DT	80
	81	kthread_stop(sdp->sd_inoded_process);
	82	kthread_stop(sdp->sd_quotad_process);
	83	kthread_stop(sdp->sd_logd_process);
	84	kthread_stop(sdp->sd_recoverd_process);
	85	while (sdp->sd_glockd_num--)
	86	kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
	87	kthread_stop(sdp->sd_scand_process);
	88
	89	if (!(sb->s_flags & MS_RDONLY)) {
	90	error = gfs2_make_fs_ro(sdp);
	91	if (error)
	92	gfs2_io_error(sdp);
	93	}
b3b94faa DT	94	/* At this point, we're through modifying the disk */
	95
	96	/* Release stuff */
	97
f42faf4f SW	98	iput(sdp->sd_master_dir);
	99	iput(sdp->sd_jindex);
	100	iput(sdp->sd_inum_inode);
	101	iput(sdp->sd_statfs_inode);
	102	iput(sdp->sd_rindex);
	103	iput(sdp->sd_quota_inode);
b3b94faa DT	104
	105	gfs2_glock_put(sdp->sd_rename_gl);
	106	gfs2_glock_put(sdp->sd_trans_gl);
	107
	108	if (!sdp->sd_args.ar_spectator) {
	109	gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
	110	gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
	111	gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
	112	gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
	113	gfs2_glock_dq_uninit(&sdp->sd_ut_gh);
	114	gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
f42faf4f SW	115	iput(sdp->sd_ir_inode);
	116	iput(sdp->sd_sc_inode);
	117	iput(sdp->sd_ut_inode);
	118	iput(sdp->sd_qc_inode);
b3b94faa DT	119	}
	120
	121	gfs2_glock_dq_uninit(&sdp->sd_live_gh);
b3b94faa DT	122	gfs2_clear_rgrpd(sdp);
b3b94faa DT	123	gfs2_jindex_free(sdp);
b3b94faa DT	124	/* Take apart glock structures and buffer lists */
b3b94faa DT	125	gfs2_gl_hash_clear(sdp, WAIT);
b3b94faa DT	126	/* Unmount the locking protocol */
	127	gfs2_lm_unmount(sdp);
	128
	129	/* At this point, we're through participating in the lockspace */
b3b94faa	130	gfs2_sys_fs_del(sdp);
b3b94faa	131	vfree(sdp);
5c676f6d	132	sb->s_fs_info = NULL;
b3b94faa DT	133	}
	134
	135	/**
	136	* gfs2_write_super - disk commit all incore transactions
	137	* @sb: the filesystem
	138	*
	139	* This function is called every time sync(2) is called.
b09e593d	140	* After this exits, all dirty buffers are synced.
b3b94faa DT	141	*/
	142
	143	static void gfs2_write_super(struct super_block *sb)
	144	{
5c676f6d	145	struct gfs2_sbd *sdp = sb->s_fs_info;
b09e593d	146	gfs2_log_flush(sdp, NULL);
b3b94faa DT	147	}
	148
	149	/**
	150	* gfs2_write_super_lockfs - prevent further writes to the filesystem
	151	* @sb: the VFS structure for the filesystem
	152	*
	153	*/
	154
	155	static void gfs2_write_super_lockfs(struct super_block *sb)
	156	{
5c676f6d	157	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	158	int error;
b3b94faa DT	159
b3b94faa DT	160	for (;;) {
	161	error = gfs2_freeze_fs(sdp);
	162	if (!error)
	163	break;
	164
	165	switch (error) {
	166	case -EBUSY:
	167	fs_err(sdp, "waiting for recovery before freeze\n");
	168	break;
	169
	170	default:
	171	fs_err(sdp, "error freezing FS: %d\n", error);
	172	break;
	173	}
	174
	175	fs_err(sdp, "retrying...\n");
	176	msleep(1000);
	177	}
	178	}
	179
	180	/**
	181	* gfs2_unlockfs - reallow writes to the filesystem
	182	* @sb: the VFS structure for the filesystem
	183	*
	184	*/
	185
	186	static void gfs2_unlockfs(struct super_block *sb)
	187	{
5c676f6d	188	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	189	gfs2_unfreeze_fs(sdp);
	190	}
	191
	192	/**
	193	* gfs2_statfs - Gather and return stats about the filesystem
	194	* @sb: The superblock
	195	* @statfsbuf: The buffer
	196	*
	197	* Returns: 0 on success or error code
	198	*/
	199
	200	static int gfs2_statfs(struct super_block sb, struct kstatfs buf)
	201	{
5c676f6d	202	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	203	struct gfs2_statfs_change sc;
	204	int error;
	205
b3b94faa DT	206	if (gfs2_tune_get(sdp, gt_statfs_slow))
	207	error = gfs2_statfs_slow(sdp, &sc);
	208	else
	209	error = gfs2_statfs_i(sdp, &sc);
	210
	211	if (error)
	212	return error;
	213
	214	memset(buf, 0, sizeof(struct kstatfs));
	215
	216	buf->f_type = GFS2_MAGIC;
	217	buf->f_bsize = sdp->sd_sb.sb_bsize;
	218	buf->f_blocks = sc.sc_total;
	219	buf->f_bfree = sc.sc_free;
	220	buf->f_bavail = sc.sc_free;
	221	buf->f_files = sc.sc_dinodes + sc.sc_free;
	222	buf->f_ffree = sc.sc_free;
	223	buf->f_namelen = GFS2_FNAMESIZE;
	224
	225	return 0;
	226	}
	227
	228	/**
	229	* gfs2_remount_fs - called when the FS is remounted
	230	* @sb: the filesystem
	231	* @flags: the remount flags
	232	* @data: extra data passed in (not used right now)
	233	*
	234	* Returns: errno
	235	*/
	236
	237	static int gfs2_remount_fs(struct super_block sb, int flags, char *data)
	238	{
5c676f6d	239	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	240	int error;
b3b94faa DT	241
b3b94faa DT	242	error = gfs2_mount_args(sdp, data, 1);
	243	if (error)
	244	return error;
	245
	246	if (sdp->sd_args.ar_spectator)
	247	*flags \|= MS_RDONLY;
	248	else {
	249	if (*flags & MS_RDONLY) {
	250	if (!(sb->s_flags & MS_RDONLY))
	251	error = gfs2_make_fs_ro(sdp);
	252	} else if (!(*flags & MS_RDONLY) &&
	253	(sb->s_flags & MS_RDONLY)) {
	254	error = gfs2_make_fs_rw(sdp);
	255	}
	256	}
	257
	258	if (*flags & (MS_NOATIME \| MS_NODIRATIME))
	259	set_bit(SDF_NOATIME, &sdp->sd_flags);
	260	else
	261	clear_bit(SDF_NOATIME, &sdp->sd_flags);
	262
	263	/* Don't let the VFS update atimes. GFS2 handles this itself. */
	264	*flags \|= MS_NOATIME \| MS_NODIRATIME;
	265
	266	return error;
	267	}
	268
	269	/**
	270	* gfs2_clear_inode - Deallocate an inode when VFS is done with it
	271	* @inode: The VFS inode
	272	*
	273	*/
	274
	275	static void gfs2_clear_inode(struct inode *inode)
	276	{
5c676f6d	277	struct gfs2_inode *ip = inode->u.generic_ip;
b3b94faa	278
b3b94faa DT	279	if (ip) {
	280	spin_lock(&ip->i_spin);
	281	ip->i_vnode = NULL;
5c676f6d	282	inode->u.generic_ip = NULL;
b3b94faa DT	283	spin_unlock(&ip->i_spin);
	284
	285	gfs2_glock_schedule_for_reclaim(ip->i_gl);
	286	gfs2_inode_put(ip);
	287	}
	288	}
	289
	290	/**
	291	* gfs2_show_options - Show mount options for /proc/mounts
	292	* @s: seq_file structure
	293	* @mnt: vfsmount
	294	*
	295	* Returns: 0 on success or error code
	296	*/
	297
	298	static int gfs2_show_options(struct seq_file s, struct vfsmount mnt)
	299	{
5c676f6d	300	struct gfs2_sbd *sdp = mnt->mnt_sb->s_fs_info;
b3b94faa DT	301	struct gfs2_args *args = &sdp->sd_args;
b3b94faa DT	302
b3b94faa DT	303	if (args->ar_lockproto[0])
	304	seq_printf(s, ",lockproto=%s", args->ar_lockproto);
	305	if (args->ar_locktable[0])
	306	seq_printf(s, ",locktable=%s", args->ar_locktable);
	307	if (args->ar_hostdata[0])
	308	seq_printf(s, ",hostdata=%s", args->ar_hostdata);
	309	if (args->ar_spectator)
	310	seq_printf(s, ",spectator");
	311	if (args->ar_ignore_local_fs)
	312	seq_printf(s, ",ignore_local_fs");
	313	if (args->ar_localflocks)
	314	seq_printf(s, ",localflocks");
	315	if (args->ar_localcaching)
	316	seq_printf(s, ",localcaching");
	317	if (args->ar_debug)
	318	seq_printf(s, ",debug");
	319	if (args->ar_upgrade)
	320	seq_printf(s, ",upgrade");
	321	if (args->ar_num_glockd != GFS2_GLOCKD_DEFAULT)
	322	seq_printf(s, ",num_glockd=%u", args->ar_num_glockd);
	323	if (args->ar_posix_acl)
	324	seq_printf(s, ",acl");
	325	if (args->ar_quota != GFS2_QUOTA_DEFAULT) {
	326	char *state;
	327	switch (args->ar_quota) {
	328	case GFS2_QUOTA_OFF:
	329	state = "off";
	330	break;
	331	case GFS2_QUOTA_ACCOUNT:
	332	state = "account";
	333	break;
	334	case GFS2_QUOTA_ON:
	335	state = "on";
	336	break;
	337	default:
	338	state = "unknown";
	339	break;
	340	}
	341	seq_printf(s, ",quota=%s", state);
	342	}
	343	if (args->ar_suiddir)
	344	seq_printf(s, ",suiddir");
	345	if (args->ar_data != GFS2_DATA_DEFAULT) {
	346	char *state;
	347	switch (args->ar_data) {
	348	case GFS2_DATA_WRITEBACK:
	349	state = "writeback";
	350	break;
	351	case GFS2_DATA_ORDERED:
	352	state = "ordered";
	353	break;
	354	default:
	355	state = "unknown";
	356	break;
	357	}
	358	seq_printf(s, ",data=%s", state);
	359	}
	360
	361	return 0;
	362	}
	363
	364	struct super_operations gfs2_super_ops = {
	365	.write_inode = gfs2_write_inode,
	366	.put_super = gfs2_put_super,
367	.write_super = gfs2_write_super,
368	.write_super_lockfs = gfs2_write_super_lockfs,
369	.unlockfs = gfs2_unlockfs,
370	.statfs = gfs2_statfs,
371	.remount_fs = gfs2_remount_fs,
372	.clear_inode = gfs2_clear_inode,
373	.show_options = gfs2_show_options,
374	};
375