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

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2008 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 version 2.
 */

#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/gfs2_ondisk.h>
#include <linux/bio.h>
#include <linux/posix_acl.h>

#include "gfs2.h"
#include "incore.h"
#include "bmap.h"
#include "glock.h"
#include "glops.h"
#include "inode.h"
#include "log.h"
#include "meta_io.h"
#include "recovery.h"
#include "rgrp.h"
#include "util.h"
#include "trans.h"
#include "dir.h"

static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
{
	fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n",
	       bh, (unsigned long long)bh->b_blocknr, bh->b_state,
	       bh->b_page->mapping, bh->b_page->flags);
	fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n",
	       gl->gl_name.ln_type, gl->gl_name.ln_number,
	       gfs2_glock2aspace(gl));
	gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n");
}

/**
 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
 * @gl: the glock
 *
 * None of the buffers should be dirty, locked, or pinned.
 */

static void __gfs2_ail_flush(struct gfs2_glock *gl, unsigned long b_state)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct list_head *head = &gl->gl_ail_list;
	struct gfs2_bufdata *bd;
	struct buffer_head *bh;
	sector_t blocknr;

	spin_lock(&sdp->sd_ail_lock);
	while (!list_empty(head)) {
		bd = list_entry(head->next, struct gfs2_bufdata,
				bd_ail_gl_list);
		bh = bd->bd_bh;
		blocknr = bh->b_blocknr;
		if (bh->b_state & b_state)
			gfs2_ail_error(gl, bh);
		bh->b_private = NULL;
		gfs2_remove_from_ail(bd); /* drops ref on bh */
		spin_unlock(&sdp->sd_ail_lock);

		bd->bd_bh = NULL;
		bd->bd_blkno = blocknr;

		gfs2_log_lock(sdp);
		gfs2_trans_add_revoke(sdp, bd);
		gfs2_log_unlock(sdp);

		spin_lock(&sdp->sd_ail_lock);
	}
	gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
	spin_unlock(&sdp->sd_ail_lock);
}


static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct gfs2_trans tr;

	memset(&tr, 0, sizeof(tr));
	tr.tr_revokes = atomic_read(&gl->gl_ail_count);

	if (!tr.tr_revokes)
		return;

	/* A shortened, inline version of gfs2_trans_begin() */
	tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
	tr.tr_ip = (unsigned long)__builtin_return_address(0);
	INIT_LIST_HEAD(&tr.tr_list_buf);
	gfs2_log_reserve(sdp, tr.tr_reserved);
	BUG_ON(current->journal_info);
	current->journal_info = &tr;

	__gfs2_ail_flush(gl, (1ul << BH_Dirty)|(1ul << BH_Pinned)|(1ul << BH_Lock));

	gfs2_trans_end(sdp);
	gfs2_log_flush(sdp, NULL);
}

void gfs2_ail_flush(struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	unsigned int revokes = atomic_read(&gl->gl_ail_count);
	int ret;

	if (!revokes)
		return;

	ret = gfs2_trans_begin(sdp, 0, revokes);
	if (ret)
		return;
	__gfs2_ail_flush(gl, (1ul << BH_Dirty)|(1ul << BH_Pinned));
	gfs2_trans_end(sdp);
	gfs2_log_flush(sdp, NULL);
}

/**
 * rgrp_go_sync - sync out the metadata for this glock
 * @gl: the glock
 *
 * Called when demoting or unlocking an EX glock.  We must flush
 * to disk all dirty buffers/pages relating to this glock, and must not
 * not return to caller to demote/unlock the glock until I/O is complete.
 */

static void rgrp_go_sync(struct gfs2_glock *gl)
{
	struct address_space *metamapping = gfs2_glock2aspace(gl);
	struct gfs2_rgrpd *rgd;
	int error;

	if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
		return;
	BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);

	gfs2_log_flush(gl->gl_sbd, gl);
	filemap_fdatawrite(metamapping);
	error = filemap_fdatawait(metamapping);
        mapping_set_error(metamapping, error);
	gfs2_ail_empty_gl(gl);

	spin_lock(&gl->gl_spin);
	rgd = gl->gl_object;
	if (rgd)
		gfs2_free_clones(rgd);
	spin_unlock(&gl->gl_spin);
}

/**
 * rgrp_go_inval - invalidate the metadata for this glock
 * @gl: the glock
 * @flags:
 *
 * We never used LM_ST_DEFERRED with resource groups, so that we
 * should always see the metadata flag set here.
 *
 */

static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
{
	struct address_space *mapping = gfs2_glock2aspace(gl);

	BUG_ON(!(flags & DIO_METADATA));
	gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
	truncate_inode_pages(mapping, 0);

	if (gl->gl_object) {
		struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
		rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
	}
}

/**
 * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 * @gl: the glock protecting the inode
 *
 */

static void inode_go_sync(struct gfs2_glock *gl)
{
	struct gfs2_inode *ip = gl->gl_object;
	struct address_space *metamapping = gfs2_glock2aspace(gl);
	int error;

	if (ip && !S_ISREG(ip->i_inode.i_mode))
		ip = NULL;
	if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
		unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
	if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
		return;

	BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);

	gfs2_log_flush(gl->gl_sbd, gl);
	filemap_fdatawrite(metamapping);
	if (ip) {
		struct address_space *mapping = ip->i_inode.i_mapping;
		filemap_fdatawrite(mapping);
		error = filemap_fdatawait(mapping);
		mapping_set_error(mapping, error);
	}
	error = filemap_fdatawait(metamapping);
	mapping_set_error(metamapping, error);
	gfs2_ail_empty_gl(gl);
	/*
	 * Writeback of the data mapping may cause the dirty flag to be set
	 * so we have to clear it again here.
	 */
	smp_mb__before_clear_bit();
	clear_bit(GLF_DIRTY, &gl->gl_flags);
}

/**
 * inode_go_inval - prepare a inode glock to be released
 * @gl: the glock
 * @flags:
 * 
 * Normally we invlidate everything, but if we are moving into
 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 * can keep hold of the metadata, since it won't have changed.
 *
 */

static void inode_go_inval(struct gfs2_glock *gl, int flags)
{
	struct gfs2_inode *ip = gl->gl_object;

	gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));

	if (flags & DIO_METADATA) {
		struct address_space *mapping = gfs2_glock2aspace(gl);
		truncate_inode_pages(mapping, 0);
		if (ip) {
			set_bit(GIF_INVALID, &ip->i_flags);
			forget_all_cached_acls(&ip->i_inode);
			gfs2_dir_hash_inval(ip);
		}
	}

	if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
		gfs2_log_flush(gl->gl_sbd, NULL);
		gl->gl_sbd->sd_rindex_uptodate = 0;
	}
	if (ip && S_ISREG(ip->i_inode.i_mode))
		truncate_inode_pages(ip->i_inode.i_mapping, 0);
}

/**
 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 * @gl: the glock
 *
 * Returns: 1 if it's ok
 */

static int inode_go_demote_ok(const struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct gfs2_holder *gh;

	if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
		return 0;

	if (!list_empty(&gl->gl_holders)) {
		gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
		if (gh->gh_list.next != &gl->gl_holders)
			return 0;
	}

	return 1;
}

/**
 * gfs2_set_nlink - Set the inode's link count based on on-disk info
 * @inode: The inode in question
 * @nlink: The link count
 *
 * If the link count has hit zero, it must never be raised, whatever the
 * on-disk inode might say. When new struct inodes are created the link
 * count is set to 1, so that we can safely use this test even when reading
 * in on disk information for the first time.
 */

static void gfs2_set_nlink(struct inode *inode, u32 nlink)
{
	/*
	 * We will need to review setting the nlink count here in the
	 * light of the forthcoming ro bind mount work. This is a reminder
	 * to do that.
	 */
	if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
		if (nlink == 0)
			clear_nlink(inode);
		else
			inode->i_nlink = nlink;
	}
}

static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
{
	const struct gfs2_dinode *str = buf;
	struct timespec atime;
	u16 height, depth;

	if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
		goto corrupt;
	ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
	ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
	ip->i_inode.i_rdev = 0;
	switch (ip->i_inode.i_mode & S_IFMT) {
	case S_IFBLK:
	case S_IFCHR:
		ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
					   be32_to_cpu(str->di_minor));
		break;
	};

	ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
	ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
	gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
	i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
	gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
	atime.tv_sec = be64_to_cpu(str->di_atime);
	atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
	if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
		ip->i_inode.i_atime = atime;
	ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
	ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
	ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
	ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);

	ip->i_goal = be64_to_cpu(str->di_goal_meta);
	ip->i_generation = be64_to_cpu(str->di_generation);

	ip->i_diskflags = be32_to_cpu(str->di_flags);
	ip->i_eattr = be64_to_cpu(str->di_eattr);
	/* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
	gfs2_set_inode_flags(&ip->i_inode);
	height = be16_to_cpu(str->di_height);
	if (unlikely(height > GFS2_MAX_META_HEIGHT))
		goto corrupt;
	ip->i_height = (u8)height;

	depth = be16_to_cpu(str->di_depth);
	if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
		goto corrupt;
	ip->i_depth = (u8)depth;
	ip->i_entries = be32_to_cpu(str->di_entries);

	if (S_ISREG(ip->i_inode.i_mode))
		gfs2_set_aops(&ip->i_inode);

	return 0;
corrupt:
	gfs2_consist_inode(ip);
	return -EIO;
}

/**
 * gfs2_inode_refresh - Refresh the incore copy of the dinode
 * @ip: The GFS2 inode
 *
 * Returns: errno
 */

int gfs2_inode_refresh(struct gfs2_inode *ip)
{
	struct buffer_head *dibh;
	int error;

	error = gfs2_meta_inode_buffer(ip, &dibh);
	if (error)
		return error;

	if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
		brelse(dibh);
		return -EIO;
	}

	error = gfs2_dinode_in(ip, dibh->b_data);
	brelse(dibh);
	clear_bit(GIF_INVALID, &ip->i_flags);

	return error;
}

/**
 * inode_go_lock - operation done after an inode lock is locked by a process
 * @gl: the glock
 * @flags:
 *
 * Returns: errno
 */

static int inode_go_lock(struct gfs2_holder *gh)
{
	struct gfs2_glock *gl = gh->gh_gl;
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct gfs2_inode *ip = gl->gl_object;
	int error = 0;

	if (!ip || (gh->gh_flags & GL_SKIP))
		return 0;

	if (test_bit(GIF_INVALID, &ip->i_flags)) {
		error = gfs2_inode_refresh(ip);
		if (error)
			return error;
	}

	if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
	    (gl->gl_state == LM_ST_EXCLUSIVE) &&
	    (gh->gh_state == LM_ST_EXCLUSIVE)) {
		spin_lock(&sdp->sd_trunc_lock);
		if (list_empty(&ip->i_trunc_list))
			list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
		spin_unlock(&sdp->sd_trunc_lock);
		wake_up(&sdp->sd_quota_wait);
		return 1;
	}

	return error;
}

/**
 * inode_go_dump - print information about an inode
 * @seq: The iterator
 * @ip: the inode
 *
 * Returns: 0 on success, -ENOBUFS when we run out of space
 */

static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
{
	const struct gfs2_inode *ip = gl->gl_object;
	if (ip == NULL)
		return 0;
	gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
		  (unsigned long long)ip->i_no_formal_ino,
		  (unsigned long long)ip->i_no_addr,
		  IF2DT(ip->i_inode.i_mode), ip->i_flags,
		  (unsigned int)ip->i_diskflags,
		  (unsigned long long)i_size_read(&ip->i_inode));
	return 0;
}

/**
 * trans_go_sync - promote/demote the transaction glock
 * @gl: the glock
 * @state: the requested state
 * @flags:
 *
 */

static void trans_go_sync(struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;

	if (gl->gl_state != LM_ST_UNLOCKED &&
	    test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
		gfs2_meta_syncfs(sdp);
		gfs2_log_shutdown(sdp);
	}
}

/**
 * trans_go_xmote_bh - After promoting/demoting the transaction glock
 * @gl: the glock
 *
 */

static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
	struct gfs2_glock *j_gl = ip->i_gl;
	struct gfs2_log_header_host head;
	int error;

	if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
		j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);

		error = gfs2_find_jhead(sdp->sd_jdesc, &head);
		if (error)
			gfs2_consist(sdp);
		if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
			gfs2_consist(sdp);

		/*  Initialize some head of the log stuff  */
		if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
			sdp->sd_log_sequence = head.lh_sequence + 1;
			gfs2_log_pointers_init(sdp, head.lh_blkno);
		}
	}
	return 0;
}

/**
 * trans_go_demote_ok
 * @gl: the glock
 *
 * Always returns 0
 */

static int trans_go_demote_ok(const struct gfs2_glock *gl)
{
	return 0;
}

/**
 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 * @gl: the glock
 *
 * gl_spin lock is held while calling this
 */
static void iopen_go_callback(struct gfs2_glock *gl)
{
	struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
	struct gfs2_sbd *sdp = gl->gl_sbd;

	if (sdp->sd_vfs->s_flags & MS_RDONLY)
		return;

	if (gl->gl_demote_state == LM_ST_UNLOCKED &&
	    gl->gl_state == LM_ST_SHARED && ip) {
		gfs2_glock_hold(gl);
		if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
			gfs2_glock_put_nolock(gl);
	}
}

const struct gfs2_glock_operations gfs2_meta_glops = {
	.go_type = LM_TYPE_META,
};

const struct gfs2_glock_operations gfs2_inode_glops = {
	.go_xmote_th = inode_go_sync,
	.go_inval = inode_go_inval,
	.go_demote_ok = inode_go_demote_ok,
	.go_lock = inode_go_lock,
	.go_dump = inode_go_dump,
	.go_type = LM_TYPE_INODE,
	.go_flags = GLOF_ASPACE,
};

const struct gfs2_glock_operations gfs2_rgrp_glops = {
	.go_xmote_th = rgrp_go_sync,
	.go_inval = rgrp_go_inval,
	.go_lock = gfs2_rgrp_go_lock,
	.go_unlock = gfs2_rgrp_go_unlock,
	.go_dump = gfs2_rgrp_dump,
	.go_type = LM_TYPE_RGRP,
	.go_flags = GLOF_ASPACE,
};

const struct gfs2_glock_operations gfs2_trans_glops = {
	.go_xmote_th = trans_go_sync,
	.go_xmote_bh = trans_go_xmote_bh,
	.go_demote_ok = trans_go_demote_ok,
	.go_type = LM_TYPE_NONDISK,
};

const struct gfs2_glock_operations gfs2_iopen_glops = {
	.go_type = LM_TYPE_IOPEN,
	.go_callback = iopen_go_callback,
};

const struct gfs2_glock_operations gfs2_flock_glops = {
	.go_type = LM_TYPE_FLOCK,
};

const struct gfs2_glock_operations gfs2_nondisk_glops = {
	.go_type = LM_TYPE_NONDISK,
};

const struct gfs2_glock_operations gfs2_quota_glops = {
	.go_type = LM_TYPE_QUOTA,
};

const struct gfs2_glock_operations gfs2_journal_glops = {
	.go_type = LM_TYPE_JOURNAL,
};

const struct gfs2_glock_operations *gfs2_glops_list[] = {
	[LM_TYPE_META] = &gfs2_meta_glops,
	[LM_TYPE_INODE] = &gfs2_inode_glops,
	[LM_TYPE_RGRP] = &gfs2_rgrp_glops,
	[LM_TYPE_IOPEN] = &gfs2_iopen_glops,
	[LM_TYPE_FLOCK] = &gfs2_flock_glops,
	[LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
	[LM_TYPE_QUOTA] = &gfs2_quota_glops,
	[LM_TYPE_JOURNAL] = &gfs2_journal_glops,
};
Commit	Line	Data
b3b94faa DT	1	/*
b3b94faa DT	2	* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
cf45b752	3	* Copyright (C) 2004-2008 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
e9fc2aa0	7	* of the GNU General Public License version 2.
b3b94faa DT	8	*/
b3b94faa DT	9
b3b94faa DT	10	#include <linux/spinlock.h>
	11	#include <linux/completion.h>
	12	#include <linux/buffer_head.h>
5c676f6d	13	#include <linux/gfs2_ondisk.h>
6802e340	14	#include <linux/bio.h>
c65f7fb5	15	#include <linux/posix_acl.h>
b3b94faa DT	16
b3b94faa DT	17	#include "gfs2.h"
5c676f6d	18	#include "incore.h"
b3b94faa DT	19	#include "bmap.h"
	20	#include "glock.h"
	21	#include "glops.h"
	22	#include "inode.h"
	23	#include "log.h"
	24	#include "meta_io.h"
b3b94faa DT	25	#include "recovery.h"
b3b94faa DT	26	#include "rgrp.h"
5c676f6d	27	#include "util.h"
ddacfaf7	28	#include "trans.h"
17d539f0	29	#include "dir.h"
b3b94faa	30
75549186 SW	31	static void gfs2_ail_error(struct gfs2_glock gl, const struct buffer_head bh)
	32	{
	33	fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n",
	34	bh, (unsigned long long)bh->b_blocknr, bh->b_state,
	35	bh->b_page->mapping, bh->b_page->flags);
	36	fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n",
	37	gl->gl_name.ln_type, gl->gl_name.ln_number,
	38	gfs2_glock2aspace(gl));
	39	gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n");
	40	}
	41
ddacfaf7	42	/**
dba898b0	43	* __gfs2_ail_flush - remove all buffers for a given lock from the AIL
ddacfaf7 SW	44	* @gl: the glock
	45	*
	46	* None of the buffers should be dirty, locked, or pinned.
	47	*/
	48
f1818529	49	static void __gfs2_ail_flush(struct gfs2_glock *gl, unsigned long b_state)
ddacfaf7 SW	50	{
ddacfaf7 SW	51	struct gfs2_sbd *sdp = gl->gl_sbd;
ddacfaf7 SW	52	struct list_head *head = &gl->gl_ail_list;
	53	struct gfs2_bufdata *bd;
	54	struct buffer_head *bh;
75549186	55	sector_t blocknr;
d8348de0	56
d6a079e8	57	spin_lock(&sdp->sd_ail_lock);
ddacfaf7 SW	58	while (!list_empty(head)) {
	59	bd = list_entry(head->next, struct gfs2_bufdata,
	60	bd_ail_gl_list);
	61	bh = bd->bd_bh;
75549186	62	blocknr = bh->b_blocknr;
f1818529	63	if (bh->b_state & b_state)
75549186	64	gfs2_ail_error(gl, bh);
1ad38c43	65	bh->b_private = NULL;
75549186	66	gfs2_remove_from_ail(bd); /* drops ref on bh */
380f7c65 SW	67	spin_unlock(&sdp->sd_ail_lock);
380f7c65 SW	68
75549186 SW	69	bd->bd_bh = NULL;
	70	bd->bd_blkno = blocknr;
	71
d6a079e8	72	gfs2_log_lock(sdp);
1ad38c43	73	gfs2_trans_add_revoke(sdp, bd);
d6a079e8 DC	74	gfs2_log_unlock(sdp);
	75
	76	spin_lock(&sdp->sd_ail_lock);
ddacfaf7 SW	77	}
ddacfaf7 SW	78	gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
d6a079e8	79	spin_unlock(&sdp->sd_ail_lock);
dba898b0 SW	80	}
	81
	82
	83	static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
	84	{
	85	struct gfs2_sbd *sdp = gl->gl_sbd;
	86	struct gfs2_trans tr;
	87
	88	memset(&tr, 0, sizeof(tr));
	89	tr.tr_revokes = atomic_read(&gl->gl_ail_count);
	90
	91	if (!tr.tr_revokes)
	92	return;
	93
	94	/* A shortened, inline version of gfs2_trans_begin() */
	95	tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
	96	tr.tr_ip = (unsigned long)__builtin_return_address(0);
	97	INIT_LIST_HEAD(&tr.tr_list_buf);
	98	gfs2_log_reserve(sdp, tr.tr_reserved);
	99	BUG_ON(current->journal_info);
	100	current->journal_info = &tr;
	101
f1818529	102	__gfs2_ail_flush(gl, (1ul << BH_Dirty)\|(1ul << BH_Pinned)\|(1ul << BH_Lock));
dba898b0 SW	103
	104	gfs2_trans_end(sdp);
	105	gfs2_log_flush(sdp, NULL);
	106	}
ddacfaf7	107
dba898b0 SW	108	void gfs2_ail_flush(struct gfs2_glock *gl)
	109	{
	110	struct gfs2_sbd *sdp = gl->gl_sbd;
	111	unsigned int revokes = atomic_read(&gl->gl_ail_count);
	112	int ret;
	113
	114	if (!revokes)
	115	return;
	116
	117	ret = gfs2_trans_begin(sdp, 0, revokes);
	118	if (ret)
	119	return;
f1818529	120	__gfs2_ail_flush(gl, (1ul << BH_Dirty)\|(1ul << BH_Pinned));
ddacfaf7 SW	121	gfs2_trans_end(sdp);
	122	gfs2_log_flush(sdp, NULL);
	123	}
ba7f7290 SW	124
ba7f7290 SW	125	/**
6bac243f	126	* rgrp_go_sync - sync out the metadata for this glock
b3b94faa	127	* @gl: the glock
b3b94faa DT	128	*
	129	* Called when demoting or unlocking an EX glock. We must flush
	130	* to disk all dirty buffers/pages relating to this glock, and must not
	131	* not return to caller to demote/unlock the glock until I/O is complete.
	132	*/
	133
6bac243f	134	static void rgrp_go_sync(struct gfs2_glock *gl)
b3b94faa	135	{
009d8518	136	struct address_space *metamapping = gfs2_glock2aspace(gl);
8339ee54	137	struct gfs2_rgrpd *rgd;
6bac243f SW	138	int error;
	139
	140	if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
b5d32bea	141	return;
6bac243f	142	BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
b5d32bea	143
6bac243f SW	144	gfs2_log_flush(gl->gl_sbd, gl);
	145	filemap_fdatawrite(metamapping);
	146	error = filemap_fdatawait(metamapping);
	147	mapping_set_error(metamapping, error);
	148	gfs2_ail_empty_gl(gl);
7c9ca621	149
8339ee54 SW	150	spin_lock(&gl->gl_spin);
	151	rgd = gl->gl_object;
	152	if (rgd)
	153	gfs2_free_clones(rgd);
	154	spin_unlock(&gl->gl_spin);
b3b94faa DT	155	}
	156
	157	/**
6bac243f	158	* rgrp_go_inval - invalidate the metadata for this glock
b3b94faa DT	159	* @gl: the glock
	160	* @flags:
	161	*
6bac243f SW	162	* We never used LM_ST_DEFERRED with resource groups, so that we
	163	* should always see the metadata flag set here.
	164	*
b3b94faa DT	165	*/
b3b94faa DT	166
6bac243f	167	static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
b3b94faa	168	{
009d8518	169	struct address_space *mapping = gfs2_glock2aspace(gl);
b3b94faa	170
6bac243f SW	171	BUG_ON(!(flags & DIO_METADATA));
	172	gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
	173	truncate_inode_pages(mapping, 0);
cf45b752	174
6bac243f SW	175	if (gl->gl_object) {
6bac243f SW	176	struct gfs2_rgrpd rgd = (struct gfs2_rgrpd )gl->gl_object;
cf45b752 BP	177	rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
cf45b752 BP	178	}
b3b94faa DT	179	}
b3b94faa DT	180
b5d32bea SW	181	/**
	182	* inode_go_sync - Sync the dirty data and/or metadata for an inode glock
	183	* @gl: the glock protecting the inode
	184	*
	185	*/
	186
	187	static void inode_go_sync(struct gfs2_glock *gl)
	188	{
	189	struct gfs2_inode *ip = gl->gl_object;
009d8518	190	struct address_space *metamapping = gfs2_glock2aspace(gl);
3042a2cc SW	191	int error;
3042a2cc SW	192
b5d32bea SW	193	if (ip && !S_ISREG(ip->i_inode.i_mode))
b5d32bea SW	194	ip = NULL;
6bac243f SW	195	if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
	196	unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
	197	if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
	198	return;
b5d32bea	199
6bac243f SW	200	BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
	201
	202	gfs2_log_flush(gl->gl_sbd, gl);
	203	filemap_fdatawrite(metamapping);
	204	if (ip) {
	205	struct address_space *mapping = ip->i_inode.i_mapping;
	206	filemap_fdatawrite(mapping);
	207	error = filemap_fdatawait(mapping);
	208	mapping_set_error(mapping, error);
b5d32bea	209	}
6bac243f SW	210	error = filemap_fdatawait(metamapping);
	211	mapping_set_error(metamapping, error);
	212	gfs2_ail_empty_gl(gl);
52fcd11c SW	213	/*
	214	* Writeback of the data mapping may cause the dirty flag to be set
	215	* so we have to clear it again here.
	216	*/
	217	smp_mb__before_clear_bit();
	218	clear_bit(GLF_DIRTY, &gl->gl_flags);
b5d32bea SW	219	}
b5d32bea SW	220
b3b94faa DT	221	/**
	222	* inode_go_inval - prepare a inode glock to be released
	223	* @gl: the glock
	224	* @flags:
6bac243f SW	225	*
	226	* Normally we invlidate everything, but if we are moving into
	227	* LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
	228	* can keep hold of the metadata, since it won't have changed.
b3b94faa DT	229	*
	230	*/
	231
	232	static void inode_go_inval(struct gfs2_glock *gl, int flags)
	233	{
b004157a	234	struct gfs2_inode *ip = gl->gl_object;
b3b94faa	235
6bac243f SW	236	gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
	237
	238	if (flags & DIO_METADATA) {
009d8518	239	struct address_space *mapping = gfs2_glock2aspace(gl);
6bac243f	240	truncate_inode_pages(mapping, 0);
c65f7fb5	241	if (ip) {
b004157a	242	set_bit(GIF_INVALID, &ip->i_flags);
c65f7fb5	243	forget_all_cached_acls(&ip->i_inode);
17d539f0	244	gfs2_dir_hash_inval(ip);
c65f7fb5	245	}
b004157a SW	246	}
b004157a SW	247
1ce53368 BM	248	if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
1ce53368 BM	249	gfs2_log_flush(gl->gl_sbd, NULL);
6bac243f	250	gl->gl_sbd->sd_rindex_uptodate = 0;
1ce53368	251	}
3cc3f710	252	if (ip && S_ISREG(ip->i_inode.i_mode))
b004157a	253	truncate_inode_pages(ip->i_inode.i_mapping, 0);
b3b94faa DT	254	}
	255
	256	/**
	257	* inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
	258	* @gl: the glock
	259	*
	260	* Returns: 1 if it's ok
	261	*/
	262
97cc1025	263	static int inode_go_demote_ok(const struct gfs2_glock *gl)
b3b94faa DT	264	{
b3b94faa DT	265	struct gfs2_sbd *sdp = gl->gl_sbd;
bc015cb8 SW	266	struct gfs2_holder *gh;
bc015cb8 SW	267
97cc1025 SW	268	if (sdp->sd_jindex == gl->gl_object \|\| sdp->sd_rindex == gl->gl_object)
97cc1025 SW	269	return 0;
bc015cb8 SW	270
	271	if (!list_empty(&gl->gl_holders)) {
	272	gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
	273	if (gh->gh_list.next != &gl->gl_holders)
	274	return 0;
	275	}
	276
97cc1025	277	return 1;
b3b94faa DT	278	}
b3b94faa DT	279
d4b2cf1b SW	280	/**
	281	* gfs2_set_nlink - Set the inode's link count based on on-disk info
	282	* @inode: The inode in question
	283	* @nlink: The link count
	284	*
	285	* If the link count has hit zero, it must never be raised, whatever the
	286	* on-disk inode might say. When new struct inodes are created the link
	287	* count is set to 1, so that we can safely use this test even when reading
	288	* in on disk information for the first time.
	289	*/
	290
	291	static void gfs2_set_nlink(struct inode *inode, u32 nlink)
	292	{
	293	/*
	294	* We will need to review setting the nlink count here in the
	295	* light of the forthcoming ro bind mount work. This is a reminder
	296	* to do that.
	297	*/
	298	if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
	299	if (nlink == 0)
	300	clear_nlink(inode);
	301	else
	302	inode->i_nlink = nlink;
	303	}
	304	}
	305
	306	static int gfs2_dinode_in(struct gfs2_inode ip, const void buf)
	307	{
	308	const struct gfs2_dinode *str = buf;
	309	struct timespec atime;
	310	u16 height, depth;
	311
	312	if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
	313	goto corrupt;
	314	ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
	315	ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
	316	ip->i_inode.i_rdev = 0;
	317	switch (ip->i_inode.i_mode & S_IFMT) {
	318	case S_IFBLK:
	319	case S_IFCHR:
	320	ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
	321	be32_to_cpu(str->di_minor));
	322	break;
	323	};
	324
	325	ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
	326	ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
	327	gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
	328	i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
	329	gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
	330	atime.tv_sec = be64_to_cpu(str->di_atime);
	331	atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
	332	if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
	333	ip->i_inode.i_atime = atime;
	334	ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
	335	ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
	336	ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
	337	ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
	338
	339	ip->i_goal = be64_to_cpu(str->di_goal_meta);
	340	ip->i_generation = be64_to_cpu(str->di_generation);
	341
	342	ip->i_diskflags = be32_to_cpu(str->di_flags);
9964afbb SW	343	ip->i_eattr = be64_to_cpu(str->di_eattr);
9964afbb SW	344	/* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
d4b2cf1b SW	345	gfs2_set_inode_flags(&ip->i_inode);
	346	height = be16_to_cpu(str->di_height);
	347	if (unlikely(height > GFS2_MAX_META_HEIGHT))
	348	goto corrupt;
	349	ip->i_height = (u8)height;
	350
	351	depth = be16_to_cpu(str->di_depth);
	352	if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
	353	goto corrupt;
	354	ip->i_depth = (u8)depth;
	355	ip->i_entries = be32_to_cpu(str->di_entries);
	356
d4b2cf1b SW	357	if (S_ISREG(ip->i_inode.i_mode))
	358	gfs2_set_aops(&ip->i_inode);
	359
	360	return 0;
	361	corrupt:
	362	gfs2_consist_inode(ip);
	363	return -EIO;
	364	}
	365
	366	/**
	367	* gfs2_inode_refresh - Refresh the incore copy of the dinode
	368	* @ip: The GFS2 inode
	369	*
	370	* Returns: errno
	371	*/
	372
	373	int gfs2_inode_refresh(struct gfs2_inode *ip)
	374	{
	375	struct buffer_head *dibh;
	376	int error;
	377
	378	error = gfs2_meta_inode_buffer(ip, &dibh);
	379	if (error)
	380	return error;
	381
	382	if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
	383	brelse(dibh);
	384	return -EIO;
	385	}
	386
	387	error = gfs2_dinode_in(ip, dibh->b_data);
	388	brelse(dibh);
	389	clear_bit(GIF_INVALID, &ip->i_flags);
	390
	391	return error;
	392	}
	393
b3b94faa DT	394	/**
	395	* inode_go_lock - operation done after an inode lock is locked by a process
	396	* @gl: the glock
	397	* @flags:
	398	*
	399	* Returns: errno
	400	*/
	401
	402	static int inode_go_lock(struct gfs2_holder *gh)
	403	{
	404	struct gfs2_glock *gl = gh->gh_gl;
813e0c46	405	struct gfs2_sbd *sdp = gl->gl_sbd;
5c676f6d	406	struct gfs2_inode *ip = gl->gl_object;
b3b94faa DT	407	int error = 0;
b3b94faa DT	408
091806ed	409	if (!ip \|\| (gh->gh_flags & GL_SKIP))
b3b94faa DT	410	return 0;
b3b94faa DT	411
bfded27b	412	if (test_bit(GIF_INVALID, &ip->i_flags)) {
b3b94faa DT	413	error = gfs2_inode_refresh(ip);
	414	if (error)
	415	return error;
b3b94faa DT	416	}
b3b94faa DT	417
383f01fb	418	if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
b3b94faa	419	(gl->gl_state == LM_ST_EXCLUSIVE) &&
813e0c46 SW	420	(gh->gh_state == LM_ST_EXCLUSIVE)) {
	421	spin_lock(&sdp->sd_trunc_lock);
	422	if (list_empty(&ip->i_trunc_list))
	423	list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
	424	spin_unlock(&sdp->sd_trunc_lock);
	425	wake_up(&sdp->sd_quota_wait);
	426	return 1;
	427	}
b3b94faa DT	428
	429	return error;
	430	}
	431
6802e340 SW	432	/**
	433	* inode_go_dump - print information about an inode
	434	* @seq: The iterator
	435	* @ip: the inode
	436	*
	437	* Returns: 0 on success, -ENOBUFS when we run out of space
	438	*/
	439
	440	static int inode_go_dump(struct seq_file seq, const struct gfs2_glock gl)
	441	{
	442	const struct gfs2_inode *ip = gl->gl_object;
	443	if (ip == NULL)
	444	return 0;
a2e0f799	445	gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
6802e340 SW	446	(unsigned long long)ip->i_no_formal_ino,
6802e340 SW	447	(unsigned long long)ip->i_no_addr,
fa75cedc SW	448	IF2DT(ip->i_inode.i_mode), ip->i_flags,
fa75cedc SW	449	(unsigned int)ip->i_diskflags,
a2e0f799	450	(unsigned long long)i_size_read(&ip->i_inode));
6802e340 SW	451	return 0;
	452	}
	453
b3b94faa	454	/**
3042a2cc	455	* trans_go_sync - promote/demote the transaction glock
b3b94faa DT	456	* @gl: the glock
	457	* @state: the requested state
	458	* @flags:
	459	*
	460	*/
	461
3042a2cc	462	static void trans_go_sync(struct gfs2_glock *gl)
b3b94faa DT	463	{
	464	struct gfs2_sbd *sdp = gl->gl_sbd;
	465
	466	if (gl->gl_state != LM_ST_UNLOCKED &&
	467	test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
	468	gfs2_meta_syncfs(sdp);
	469	gfs2_log_shutdown(sdp);
	470	}
b3b94faa DT	471	}
	472
	473	/**
	474	* trans_go_xmote_bh - After promoting/demoting the transaction glock
	475	* @gl: the glock
	476	*
	477	*/
	478
6802e340	479	static int trans_go_xmote_bh(struct gfs2_glock gl, struct gfs2_holder gh)
b3b94faa DT	480	{
b3b94faa DT	481	struct gfs2_sbd *sdp = gl->gl_sbd;
feaa7bba	482	struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
5c676f6d	483	struct gfs2_glock *j_gl = ip->i_gl;
55167622	484	struct gfs2_log_header_host head;
b3b94faa DT	485	int error;
b3b94faa DT	486
6802e340	487	if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
1a14d3a6	488	j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
b3b94faa DT	489
	490	error = gfs2_find_jhead(sdp->sd_jdesc, &head);
	491	if (error)
	492	gfs2_consist(sdp);
	493	if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
	494	gfs2_consist(sdp);
	495
	496	/* Initialize some head of the log stuff */
	497	if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
	498	sdp->sd_log_sequence = head.lh_sequence + 1;
	499	gfs2_log_pointers_init(sdp, head.lh_blkno);
	500	}
	501	}
6802e340	502	return 0;
b3b94faa DT	503	}
b3b94faa DT	504
97cc1025 SW	505	/**
	506	* trans_go_demote_ok
	507	* @gl: the glock
	508	*
	509	* Always returns 0
	510	*/
	511
	512	static int trans_go_demote_ok(const struct gfs2_glock *gl)
	513	{
	514	return 0;
	515	}
	516
b94a170e BM	517	/**
	518	* iopen_go_callback - schedule the dcache entry for the inode to be deleted
	519	* @gl: the glock
	520	*
	521	* gl_spin lock is held while calling this
	522	*/
	523	static void iopen_go_callback(struct gfs2_glock *gl)
	524	{
	525	struct gfs2_inode ip = (struct gfs2_inode )gl->gl_object;
001e8e8d SW	526	struct gfs2_sbd *sdp = gl->gl_sbd;
	527
	528	if (sdp->sd_vfs->s_flags & MS_RDONLY)
	529	return;
b94a170e BM	530
b94a170e BM	531	if (gl->gl_demote_state == LM_ST_UNLOCKED &&
009d8518	532	gl->gl_state == LM_ST_SHARED && ip) {
b94a170e BM	533	gfs2_glock_hold(gl);
	534	if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
	535	gfs2_glock_put_nolock(gl);
	536	}
	537	}
	538
8fb4b536	539	const struct gfs2_glock_operations gfs2_meta_glops = {
ea67eedb	540	.go_type = LM_TYPE_META,
b3b94faa DT	541	};
b3b94faa DT	542
8fb4b536	543	const struct gfs2_glock_operations gfs2_inode_glops = {
3042a2cc	544	.go_xmote_th = inode_go_sync,
b3b94faa DT	545	.go_inval = inode_go_inval,
	546	.go_demote_ok = inode_go_demote_ok,
	547	.go_lock = inode_go_lock,
6802e340	548	.go_dump = inode_go_dump,
ea67eedb	549	.go_type = LM_TYPE_INODE,
009d8518	550	.go_flags = GLOF_ASPACE,
b3b94faa DT	551	};
b3b94faa DT	552
8fb4b536	553	const struct gfs2_glock_operations gfs2_rgrp_glops = {
6bac243f SW	554	.go_xmote_th = rgrp_go_sync,
6bac243f SW	555	.go_inval = rgrp_go_inval,
7c9ca621 BP	556	.go_lock = gfs2_rgrp_go_lock,
7c9ca621 BP	557	.go_unlock = gfs2_rgrp_go_unlock,
09010978	558	.go_dump = gfs2_rgrp_dump,
ea67eedb	559	.go_type = LM_TYPE_RGRP,
009d8518	560	.go_flags = GLOF_ASPACE,
b3b94faa DT	561	};
b3b94faa DT	562
8fb4b536	563	const struct gfs2_glock_operations gfs2_trans_glops = {
3042a2cc	564	.go_xmote_th = trans_go_sync,
b3b94faa	565	.go_xmote_bh = trans_go_xmote_bh,
97cc1025	566	.go_demote_ok = trans_go_demote_ok,
ea67eedb	567	.go_type = LM_TYPE_NONDISK,
b3b94faa DT	568	};
b3b94faa DT	569
8fb4b536	570	const struct gfs2_glock_operations gfs2_iopen_glops = {
ea67eedb	571	.go_type = LM_TYPE_IOPEN,
b94a170e	572	.go_callback = iopen_go_callback,
b3b94faa DT	573	};
b3b94faa DT	574
8fb4b536	575	const struct gfs2_glock_operations gfs2_flock_glops = {
ea67eedb	576	.go_type = LM_TYPE_FLOCK,
b3b94faa DT	577	};
b3b94faa DT	578
8fb4b536	579	const struct gfs2_glock_operations gfs2_nondisk_glops = {
ea67eedb	580	.go_type = LM_TYPE_NONDISK,
b3b94faa DT	581	};
b3b94faa DT	582
8fb4b536	583	const struct gfs2_glock_operations gfs2_quota_glops = {
ea67eedb	584	.go_type = LM_TYPE_QUOTA,
b3b94faa DT	585	};
b3b94faa DT	586
8fb4b536	587	const struct gfs2_glock_operations gfs2_journal_glops = {
ea67eedb	588	.go_type = LM_TYPE_JOURNAL,
b3b94faa DT	589	};
b3b94faa DT	590
64d576ba SW	591	const struct gfs2_glock_operations *gfs2_glops_list[] = {
	592	[LM_TYPE_META] = &gfs2_meta_glops,
	593	[LM_TYPE_INODE] = &gfs2_inode_glops,
	594	[LM_TYPE_RGRP] = &gfs2_rgrp_glops,
64d576ba SW	595	[LM_TYPE_IOPEN] = &gfs2_iopen_glops,
	596	[LM_TYPE_FLOCK] = &gfs2_flock_glops,
	597	[LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
	598	[LM_TYPE_QUOTA] = &gfs2_quota_glops,
	599	[LM_TYPE_JOURNAL] = &gfs2_journal_glops,
	600	};
	601