[mirror_ubuntu-jammy-kernel.git] / fs / gfs2 / ops_super.c

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2005 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 <asm/semaphore.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_glock(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);
	iput(sdp->sd_root_dir);

	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);

	/*  Get rid of any extra inodes  */
	while (invalidate_inodes(sb))
		yield();

	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 and synced.
 */

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

/**
 * 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	/*
	2	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
	3	* Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
	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	#include <asm/semaphore.h>
	23
	24	#include "gfs2.h"
5c676f6d SW	25	#include "lm_interface.h"
5c676f6d SW	26	#include "incore.h"
b3b94faa DT	27	#include "glock.h"
	28	#include "inode.h"
	29	#include "lm.h"
	30	#include "log.h"
	31	#include "mount.h"
	32	#include "ops_super.h"
	33	#include "page.h"
	34	#include "quota.h"
	35	#include "recovery.h"
	36	#include "rgrp.h"
	37	#include "super.h"
	38	#include "sys.h"
5c676f6d	39	#include "util.h"
b3b94faa DT	40
	41	/**
	42	* gfs2_write_inode - Make sure the inode is stable on the disk
	43	* @inode: The inode
	44	* @sync: synchronous write flag
	45	*
	46	* Returns: errno
	47	*/
	48
	49	static int gfs2_write_inode(struct inode *inode, int sync)
	50	{
5c676f6d	51	struct gfs2_inode *ip = inode->u.generic_ip;
b3b94faa	52
b3b94faa DT	53	if (current->flags & PF_MEMALLOC)
	54	return 0;
	55	if (ip && sync)
	56	gfs2_log_flush_glock(ip->i_gl);
	57
	58	return 0;
	59	}
	60
	61	/**
	62	* gfs2_put_super - Unmount the filesystem
	63	* @sb: The VFS superblock
	64	*
	65	*/
	66
	67	static void gfs2_put_super(struct super_block *sb)
	68	{
5c676f6d	69	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	70	int error;
	71
	72	if (!sdp)
	73	return;
	74
b3b94faa DT	75	/* Unfreeze the filesystem, if we need to */
b3b94faa DT	76
f55ab26a	77	mutex_lock(&sdp->sd_freeze_lock);
b3b94faa DT	78	if (sdp->sd_freeze_count)
b3b94faa DT	79	gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
f55ab26a	80	mutex_unlock(&sdp->sd_freeze_lock);
b3b94faa DT	81
	82	kthread_stop(sdp->sd_inoded_process);
	83	kthread_stop(sdp->sd_quotad_process);
	84	kthread_stop(sdp->sd_logd_process);
	85	kthread_stop(sdp->sd_recoverd_process);
	86	while (sdp->sd_glockd_num--)
	87	kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
	88	kthread_stop(sdp->sd_scand_process);
	89
	90	if (!(sb->s_flags & MS_RDONLY)) {
	91	error = gfs2_make_fs_ro(sdp);
	92	if (error)
	93	gfs2_io_error(sdp);
	94	}
	95
	96	/* At this point, we're through modifying the disk */
	97
	98	/* Release stuff */
	99
f42faf4f SW	100	iput(sdp->sd_master_dir);
	101	iput(sdp->sd_jindex);
	102	iput(sdp->sd_inum_inode);
	103	iput(sdp->sd_statfs_inode);
	104	iput(sdp->sd_rindex);
	105	iput(sdp->sd_quota_inode);
	106	iput(sdp->sd_root_dir);
b3b94faa DT	107
	108	gfs2_glock_put(sdp->sd_rename_gl);
	109	gfs2_glock_put(sdp->sd_trans_gl);
	110
	111	if (!sdp->sd_args.ar_spectator) {
	112	gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
	113	gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
	114	gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
	115	gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
	116	gfs2_glock_dq_uninit(&sdp->sd_ut_gh);
	117	gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
f42faf4f SW	118	iput(sdp->sd_ir_inode);
	119	iput(sdp->sd_sc_inode);
	120	iput(sdp->sd_ut_inode);
	121	iput(sdp->sd_qc_inode);
b3b94faa DT	122	}
	123
	124	gfs2_glock_dq_uninit(&sdp->sd_live_gh);
	125
	126	gfs2_clear_rgrpd(sdp);
	127	gfs2_jindex_free(sdp);
	128
	129	/* Take apart glock structures and buffer lists */
	130	gfs2_gl_hash_clear(sdp, WAIT);
	131
	132	/* Unmount the locking protocol */
	133	gfs2_lm_unmount(sdp);
	134
	135	/* At this point, we're through participating in the lockspace */
	136
	137	gfs2_sys_fs_del(sdp);
	138
	139	/* Get rid of any extra inodes */
	140	while (invalidate_inodes(sb))
	141	yield();
	142
	143	vfree(sdp);
	144
5c676f6d	145	sb->s_fs_info = NULL;
b3b94faa DT	146	}
	147
	148	/**
	149	* gfs2_write_super - disk commit all incore transactions
	150	* @sb: the filesystem
	151	*
	152	* This function is called every time sync(2) is called.
	153	* After this exits, all dirty buffers and synced.
	154	*/
	155
	156	static void gfs2_write_super(struct super_block *sb)
	157	{
5c676f6d	158	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	159	gfs2_log_flush(sdp);
	160	}
	161
	162	/**
	163	* gfs2_write_super_lockfs - prevent further writes to the filesystem
	164	* @sb: the VFS structure for the filesystem
	165	*
	166	*/
	167
	168	static void gfs2_write_super_lockfs(struct super_block *sb)
	169	{
5c676f6d	170	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	171	int error;
b3b94faa DT	172
b3b94faa DT	173	for (;;) {
	174	error = gfs2_freeze_fs(sdp);
	175	if (!error)
	176	break;
	177
	178	switch (error) {
	179	case -EBUSY:
	180	fs_err(sdp, "waiting for recovery before freeze\n");
	181	break;
	182
	183	default:
	184	fs_err(sdp, "error freezing FS: %d\n", error);
	185	break;
	186	}
	187
	188	fs_err(sdp, "retrying...\n");
	189	msleep(1000);
	190	}
	191	}
	192
	193	/**
	194	* gfs2_unlockfs - reallow writes to the filesystem
	195	* @sb: the VFS structure for the filesystem
	196	*
	197	*/
	198
	199	static void gfs2_unlockfs(struct super_block *sb)
	200	{
5c676f6d	201	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	202	gfs2_unfreeze_fs(sdp);
	203	}
	204
	205	/**
	206	* gfs2_statfs - Gather and return stats about the filesystem
	207	* @sb: The superblock
	208	* @statfsbuf: The buffer
	209	*
	210	* Returns: 0 on success or error code
	211	*/
	212
	213	static int gfs2_statfs(struct super_block sb, struct kstatfs buf)
	214	{
5c676f6d	215	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	216	struct gfs2_statfs_change sc;
	217	int error;
	218
b3b94faa DT	219	if (gfs2_tune_get(sdp, gt_statfs_slow))
	220	error = gfs2_statfs_slow(sdp, &sc);
	221	else
	222	error = gfs2_statfs_i(sdp, &sc);
	223
	224	if (error)
	225	return error;
	226
	227	memset(buf, 0, sizeof(struct kstatfs));
	228
	229	buf->f_type = GFS2_MAGIC;
	230	buf->f_bsize = sdp->sd_sb.sb_bsize;
	231	buf->f_blocks = sc.sc_total;
	232	buf->f_bfree = sc.sc_free;
	233	buf->f_bavail = sc.sc_free;
	234	buf->f_files = sc.sc_dinodes + sc.sc_free;
	235	buf->f_ffree = sc.sc_free;
	236	buf->f_namelen = GFS2_FNAMESIZE;
	237
	238	return 0;
	239	}
	240
	241	/**
	242	* gfs2_remount_fs - called when the FS is remounted
	243	* @sb: the filesystem
	244	* @flags: the remount flags
	245	* @data: extra data passed in (not used right now)
	246	*
	247	* Returns: errno
	248	*/
	249
	250	static int gfs2_remount_fs(struct super_block sb, int flags, char *data)
	251	{
5c676f6d	252	struct gfs2_sbd *sdp = sb->s_fs_info;
b3b94faa DT	253	int error;
b3b94faa DT	254
b3b94faa DT	255	error = gfs2_mount_args(sdp, data, 1);
	256	if (error)
	257	return error;
	258
	259	if (sdp->sd_args.ar_spectator)
	260	*flags \|= MS_RDONLY;
	261	else {
	262	if (*flags & MS_RDONLY) {
	263	if (!(sb->s_flags & MS_RDONLY))
	264	error = gfs2_make_fs_ro(sdp);
	265	} else if (!(*flags & MS_RDONLY) &&
	266	(sb->s_flags & MS_RDONLY)) {
	267	error = gfs2_make_fs_rw(sdp);
	268	}
	269	}
	270
	271	if (*flags & (MS_NOATIME \| MS_NODIRATIME))
	272	set_bit(SDF_NOATIME, &sdp->sd_flags);
	273	else
	274	clear_bit(SDF_NOATIME, &sdp->sd_flags);
	275
	276	/* Don't let the VFS update atimes. GFS2 handles this itself. */
	277	*flags \|= MS_NOATIME \| MS_NODIRATIME;
	278
	279	return error;
	280	}
	281
	282	/**
	283	* gfs2_clear_inode - Deallocate an inode when VFS is done with it
	284	* @inode: The VFS inode
	285	*
	286	*/
	287
	288	static void gfs2_clear_inode(struct inode *inode)
	289	{
5c676f6d	290	struct gfs2_inode *ip = inode->u.generic_ip;
b3b94faa	291
b3b94faa DT	292	if (ip) {
	293	spin_lock(&ip->i_spin);
	294	ip->i_vnode = NULL;
5c676f6d	295	inode->u.generic_ip = NULL;
b3b94faa DT	296	spin_unlock(&ip->i_spin);
	297
	298	gfs2_glock_schedule_for_reclaim(ip->i_gl);
	299	gfs2_inode_put(ip);
	300	}
	301	}
	302
	303	/**
	304	* gfs2_show_options - Show mount options for /proc/mounts
	305	* @s: seq_file structure
	306	* @mnt: vfsmount
	307	*
	308	* Returns: 0 on success or error code
	309	*/
	310
	311	static int gfs2_show_options(struct seq_file s, struct vfsmount mnt)
	312	{
5c676f6d	313	struct gfs2_sbd *sdp = mnt->mnt_sb->s_fs_info;
b3b94faa DT	314	struct gfs2_args *args = &sdp->sd_args;
b3b94faa DT	315
b3b94faa DT	316	if (args->ar_lockproto[0])
	317	seq_printf(s, ",lockproto=%s", args->ar_lockproto);
	318	if (args->ar_locktable[0])
	319	seq_printf(s, ",locktable=%s", args->ar_locktable);
	320	if (args->ar_hostdata[0])
	321	seq_printf(s, ",hostdata=%s", args->ar_hostdata);
	322	if (args->ar_spectator)
	323	seq_printf(s, ",spectator");
	324	if (args->ar_ignore_local_fs)
	325	seq_printf(s, ",ignore_local_fs");
	326	if (args->ar_localflocks)
	327	seq_printf(s, ",localflocks");
	328	if (args->ar_localcaching)
	329	seq_printf(s, ",localcaching");
	330	if (args->ar_debug)
	331	seq_printf(s, ",debug");
	332	if (args->ar_upgrade)
	333	seq_printf(s, ",upgrade");
	334	if (args->ar_num_glockd != GFS2_GLOCKD_DEFAULT)
	335	seq_printf(s, ",num_glockd=%u", args->ar_num_glockd);
	336	if (args->ar_posix_acl)
	337	seq_printf(s, ",acl");
	338	if (args->ar_quota != GFS2_QUOTA_DEFAULT) {
	339	char *state;
	340	switch (args->ar_quota) {
	341	case GFS2_QUOTA_OFF:
	342	state = "off";
	343	break;
	344	case GFS2_QUOTA_ACCOUNT:
	345	state = "account";
	346	break;
	347	case GFS2_QUOTA_ON:
	348	state = "on";
	349	break;
	350	default:
	351	state = "unknown";
	352	break;
	353	}
	354	seq_printf(s, ",quota=%s", state);
	355	}
	356	if (args->ar_suiddir)
	357	seq_printf(s, ",suiddir");
	358	if (args->ar_data != GFS2_DATA_DEFAULT) {
	359	char *state;
	360	switch (args->ar_data) {
	361	case GFS2_DATA_WRITEBACK:
	362	state = "writeback";
	363	break;
	364	case GFS2_DATA_ORDERED:
	365	state = "ordered";
	366	break;
	367	default:
	368	state = "unknown";
	369	break;
	370	}
	371	seq_printf(s, ",data=%s", state);
	372	}
	373
	374	return 0;
	375	}
	376
	377	struct super_operations gfs2_super_ops = {
	378	.write_inode = gfs2_write_inode,
	379	.put_super = gfs2_put_super,
380	.write_super = gfs2_write_super,
381	.write_super_lockfs = gfs2_write_super_lockfs,
382	.unlockfs = gfs2_unlockfs,
383	.statfs = gfs2_statfs,
384	.remount_fs = gfs2_remount_fs,
385	.clear_inode = gfs2_clear_inode,
386	.show_options = gfs2_show_options,
387	};
388