Release 4.11 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 <linux/security.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"


struct workqueue_struct *gfs2_freeze_wq;



static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
{
	fs_err(gl->gl_name.ln_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_name.ln_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_name.ln_sbd, "AIL error\n");
}

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/**
 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
 * @gl: the glock
 * @fsync: set when called from fsync (not all buffers will be clean)
 *
 * None of the buffers should be dirty, locked, or pinned.
 */



static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
			     unsigned int nr_revokes)
{
	struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
	struct list_head *head = &gl->gl_ail_list;
	struct gfs2_bufdata *bd, *tmp;
	struct buffer_head *bh;
	const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);

	gfs2_log_lock(sdp);
	spin_lock(&sdp->sd_ail_lock);
	list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
		if (nr_revokes == 0)
			break;
		bh = bd->bd_bh;
		if (bh->b_state & b_state) {
			if (fsync)
				continue;
			gfs2_ail_error(gl, bh);
		}
		gfs2_trans_add_revoke(sdp, bd);
		nr_revokes--;
	}
	GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
	spin_unlock(&sdp->sd_ail_lock);
	gfs2_log_unlock(sdp);
}


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148
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7
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Benjamin Marzinski
15
8.62%
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10.00%
Dave Chinner
8
4.60%
1
10.00%
Robert S Peterson
3
1.72%
1
10.00%
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174
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static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
	struct gfs2_trans tr;

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

	if (!tr.tr_revokes)
		return;

	/* A shortened, inline version of gfs2_trans_begin()
         * tr->alloced is not set since the transaction structure is
         * on the stack */
	tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
	tr.tr_ip = _RET_IP_;
	if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0)
		return;
	WARN_ON_ONCE(current->journal_info);
	current->journal_info = &tr;

	__gfs2_ail_flush(gl, 0, tr.tr_revokes);

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

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138
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5
55.56%
Benjamin Marzinski
13
8.39%
2
22.22%
Robert S Peterson
3
1.94%
1
11.11%
Fabian Frederick
1
0.65%
1
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155
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void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
{
	struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
	unsigned int revokes = atomic_read(&gl->gl_ail_count);
	unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64);
	int ret;

	if (!revokes)
		return;

	while (revokes > max_revokes)
		max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64);

	ret = gfs2_trans_begin(sdp, 0, max_revokes);
	if (ret)
		return;
	__gfs2_ail_flush(gl, fsync, max_revokes);
	gfs2_trans_end(sdp);
	gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
}

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76
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4
57.14%
Benjamin Marzinski
55
41.04%
2
28.57%
Robert S Peterson
3
2.24%
1
14.29%
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134
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7
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/**
 * 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 gfs2_sbd *sdp = gl->gl_name.ln_sbd;
	struct address_space *mapping = &sdp->sd_aspace;
	struct gfs2_rgrpd *rgd;
	int error;

	spin_lock(&gl->gl_lockref.lock);
	rgd = gl->gl_object;
	if (rgd)
		gfs2_rgrp_brelse(rgd);
	spin_unlock(&gl->gl_lockref.lock);

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

	gfs2_log_flush(sdp, gl, NORMAL_FLUSH);
	filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
	error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
	mapping_set_error(mapping, error);
	gfs2_ail_empty_gl(gl);

	spin_lock(&gl->gl_lockref.lock);
	rgd = gl->gl_object;
	if (rgd)
		gfs2_free_clones(rgd);
	spin_unlock(&gl->gl_lockref.lock);
}

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Steven Whitehouse
116
60.42%
8
57.14%
Robert S Peterson
47
24.48%
3
21.43%
David Teigland
15
7.81%
1
7.14%
Andreas Gruenbacher
12
6.25%
1
7.14%
Benjamin Marzinski
2
1.04%
1
7.14%
Total
192
100.00%
14
100.00%

/**
 * 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 gfs2_sbd *sdp = gl->gl_name.ln_sbd;
	struct address_space *mapping = &sdp->sd_aspace;
	struct gfs2_rgrpd *rgd = gl->gl_object;

	if (rgd)
		gfs2_rgrp_brelse(rgd);

	WARN_ON_ONCE(!(flags & DIO_METADATA));
	gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
	truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);

	if (rgd)
		rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
}

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Steven Whitehouse
48
45.71%
4
50.00%
Robert S Peterson
34
32.38%
3
37.50%
David Teigland
23
21.90%
1
12.50%
Total
105
100.00%
8
100.00%

/**
 * 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) {
		if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
			unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
		inode_dio_wait(&ip->i_inode);
	}
	if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
		return;

	GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);

	gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH);
	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_atomic();
	clear_bit(GLF_DIRTY, &gl->gl_flags);
}

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Steven Whitehouse
154
76.24%
8
57.14%
David Teigland
32
15.84%
1
7.14%
Benjamin Marzinski
10
4.95%
2
14.29%
Robert S Peterson
3
1.49%
1
7.14%
Guillaume Chazarain
2
0.99%
1
7.14%
Peter Zijlstra
1
0.50%
1
7.14%
Total
202
100.00%
14
100.00%

/**
 * inode_go_inval - prepare a inode glock to be released
 * @gl: the glock
 * @flags:
 *
 * Normally we invalidate 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_name.ln_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);
			security_inode_invalidate_secctx(&ip->i_inode);
			gfs2_dir_hash_inval(ip);
		}
	}

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

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Steven Whitehouse
107
64.07%
6
54.55%
David Teigland
28
16.77%
1
9.09%
Benjamin Marzinski
12
7.19%
2
18.18%
Robert S Peterson
12
7.19%
1
9.09%
Andreas Gruenbacher
8
4.79%
1
9.09%
Total
167
100.00%
11
100.00%

/**
 * 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_name.ln_sbd;

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

	return 1;
}

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David Teigland
30
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14
29.79%
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Robert S Peterson
3
6.38%
1
25.00%
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47
100.00%
4
100.00%

/**
 * 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
			set_nlink(inode, nlink);
	}
}

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Steven Whitehouse
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Miklos Szeredi
4
7.41%
1
50.00%
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54
100.00%
2
100.00%



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;
	};

	i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
	i_gid_write(&ip->i_inode, 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;
}

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10
2.13%
1
33.33%
Total
470
100.00%
3
100.00%

/**
 * 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;

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

	return error;
}

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64
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1
100.00%

/**
 * 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_name.ln_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 (gh->gh_state != LM_ST_DEFERRED)
		inode_dio_wait(&ip->i_inode);

	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;
}

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David Teigland
90
48.39%
1
11.11%
Steven Whitehouse
85
45.70%
6
66.67%
Robert S Peterson
11
5.91%
2
22.22%
Total
186
100.00%
9
100.00%

/**
 * inode_go_dump - print information about an inode
 * @seq: The iterator
 * @ip: the inode
 *
 */



static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
{
	const struct gfs2_inode *ip = gl->gl_object;
	if (ip == NULL)
		return;
	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));
}

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/**
 * freeze_go_sync - promote/demote the freeze glock
 * @gl: the glock
 * @state: the requested state
 * @flags:
 *
 */



static void freeze_go_sync(struct gfs2_glock *gl)
{
	int error = 0;
	struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;

	if (gl->gl_state == LM_ST_SHARED &&
	    test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
		atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
		error = freeze_super(sdp->sd_vfs);
		if (error) {
			printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
			gfs2_assert_withdraw(sdp, 0);
		}
		queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
		gfs2_log_flush(sdp, NULL, FREEZE_FLUSH);
	}
}

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Benjamin Marzinski
60
56.60%
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50.00%
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43
40.57%
1
25.00%
Robert S Peterson
3
2.83%
1
25.00%
Total
106
100.00%
4
100.00%

/**
 * freeze_go_xmote_bh - After promoting/demoting the freeze glock
 * @gl: the glock
 *
 */



static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
{
	struct gfs2_sbd *sdp = gl->gl_name.ln_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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David Teigland
131
83.44%
1
14.29%
Steven Whitehouse
21
13.38%
3
42.86%
Robert S Peterson
3
1.91%
1
14.29%
Al Viro
1
0.64%
1
14.29%
Benjamin Marzinski
1
0.64%
1
14.29%
Total
157
100.00%
7
100.00%

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



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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Steven Whitehouse
14
93.33%
1
50.00%
Benjamin Marzinski
1
6.67%
1
50.00%
Total
15
100.00%
2
100.00%

/**
 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 * @gl: the glock
 *
 * gl_lockref.lock lock is held while calling this
 */


static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
{
	struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
	struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;

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

	if (gl->gl_demote_state == LM_ST_UNLOCKED &&
	    gl->gl_state == LM_ST_SHARED && ip) {
		gl->gl_lockref.count++;
		if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
			gl->gl_lockref.count--;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Benjamin Marzinski
61
60.40%
1
20.00%
Steven Whitehouse
37
36.63%
3
60.00%
Robert S Peterson
3
2.97%
1
20.00%
Total
101
100.00%
5
100.00%


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


const struct gfs2_glock_operations gfs2_inode_glops = {
	.go_sync = 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 | GLOF_LRU,
};


const struct gfs2_glock_operations gfs2_rgrp_glops = {
	.go_sync = 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_LVB,
};


const struct gfs2_glock_operations gfs2_freeze_glops = {
	.go_sync = freeze_go_sync,
	.go_xmote_bh = freeze_go_xmote_bh,
	.go_demote_ok = freeze_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,
	.go_flags = GLOF_LRU,
};


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


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,
	.go_flags = GLOF_LVB | GLOF_LRU,
};


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,
};

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Steven Whitehouse
1848
64.41%
45
62.50%
David Teigland
559
19.48%
2
2.78%
Benjamin Marzinski
250
8.71%
7
9.72%
Robert S Peterson
159
5.54%
7
9.72%
Andreas Gruenbacher
24
0.84%
2
2.78%
Eric W. Biedermann
10
0.35%
1
1.39%
Dave Chinner
8
0.28%
1
1.39%
Miklos Szeredi
4
0.14%
1
1.39%
Guillaume Chazarain
2
0.07%
1
1.39%
Al Viro
1
0.03%
1
1.39%
Fabio Massimo Di Nitto
1
0.03%
1
1.39%
Geert Uytterhoeven
1
0.03%
1
1.39%
Fabian Frederick
1
0.03%
1
1.39%
Peter Zijlstra
1
0.03%
1
1.39%
Total
2869
100.00%
72
100.00%
Directory: fs/gfs2

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