![Steven Whitehouse](/assets/img/avatar_default.png)
This should solve the issue with the previous attempt at fixing this. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
1298 lines
32 KiB
C
1298 lines
32 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/blkdev.h>
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#include <linux/kthread.h>
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#include <linux/namei.h>
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#include <linux/mount.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/lm_interface.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "bmap.h"
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#include "glock.h"
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#include "glops.h"
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#include "inode.h"
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#include "mount.h"
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#include "recovery.h"
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#include "rgrp.h"
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#include "super.h"
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#include "sys.h"
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#include "util.h"
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#include "log.h"
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#include "quota.h"
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#include "dir.h"
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#define DO 0
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#define UNDO 1
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static const u32 gfs2_old_fs_formats[] = {
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0
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};
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static const u32 gfs2_old_multihost_formats[] = {
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0
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};
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/**
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* gfs2_tune_init - Fill a gfs2_tune structure with default values
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* @gt: tune
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*
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*/
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static void gfs2_tune_init(struct gfs2_tune *gt)
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{
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spin_lock_init(>->gt_spin);
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gt->gt_incore_log_blocks = 1024;
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gt->gt_log_flush_secs = 60;
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gt->gt_recoverd_secs = 60;
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gt->gt_logd_secs = 1;
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gt->gt_quota_simul_sync = 64;
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gt->gt_quota_warn_period = 10;
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gt->gt_quota_scale_num = 1;
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gt->gt_quota_scale_den = 1;
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gt->gt_quota_cache_secs = 300;
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gt->gt_quota_quantum = 60;
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gt->gt_new_files_jdata = 0;
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gt->gt_max_readahead = 1 << 18;
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gt->gt_stall_secs = 600;
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gt->gt_complain_secs = 10;
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gt->gt_statfs_quantum = 30;
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gt->gt_statfs_slow = 0;
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}
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static struct gfs2_sbd *init_sbd(struct super_block *sb)
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{
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struct gfs2_sbd *sdp;
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sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL);
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if (!sdp)
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return NULL;
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sb->s_fs_info = sdp;
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sdp->sd_vfs = sb;
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gfs2_tune_init(&sdp->sd_tune);
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mutex_init(&sdp->sd_inum_mutex);
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spin_lock_init(&sdp->sd_statfs_spin);
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spin_lock_init(&sdp->sd_rindex_spin);
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mutex_init(&sdp->sd_rindex_mutex);
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INIT_LIST_HEAD(&sdp->sd_rindex_list);
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INIT_LIST_HEAD(&sdp->sd_rindex_mru_list);
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INIT_LIST_HEAD(&sdp->sd_jindex_list);
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spin_lock_init(&sdp->sd_jindex_spin);
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mutex_init(&sdp->sd_jindex_mutex);
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INIT_LIST_HEAD(&sdp->sd_quota_list);
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spin_lock_init(&sdp->sd_quota_spin);
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mutex_init(&sdp->sd_quota_mutex);
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init_waitqueue_head(&sdp->sd_quota_wait);
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INIT_LIST_HEAD(&sdp->sd_trunc_list);
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spin_lock_init(&sdp->sd_trunc_lock);
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spin_lock_init(&sdp->sd_log_lock);
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INIT_LIST_HEAD(&sdp->sd_log_le_buf);
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INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
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INIT_LIST_HEAD(&sdp->sd_log_le_rg);
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INIT_LIST_HEAD(&sdp->sd_log_le_databuf);
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INIT_LIST_HEAD(&sdp->sd_log_le_ordered);
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mutex_init(&sdp->sd_log_reserve_mutex);
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INIT_LIST_HEAD(&sdp->sd_ail1_list);
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INIT_LIST_HEAD(&sdp->sd_ail2_list);
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init_rwsem(&sdp->sd_log_flush_lock);
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atomic_set(&sdp->sd_log_in_flight, 0);
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init_waitqueue_head(&sdp->sd_log_flush_wait);
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INIT_LIST_HEAD(&sdp->sd_revoke_list);
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mutex_init(&sdp->sd_freeze_lock);
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return sdp;
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}
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/**
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* gfs2_check_sb - Check superblock
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* @sdp: the filesystem
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* @sb: The superblock
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* @silent: Don't print a message if the check fails
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*
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* Checks the version code of the FS is one that we understand how to
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* read and that the sizes of the various on-disk structures have not
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* changed.
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*/
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static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent)
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{
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unsigned int x;
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if (sb->sb_magic != GFS2_MAGIC ||
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sb->sb_type != GFS2_METATYPE_SB) {
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if (!silent)
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printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n");
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return -EINVAL;
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}
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/* If format numbers match exactly, we're done. */
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if (sb->sb_fs_format == GFS2_FORMAT_FS &&
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sb->sb_multihost_format == GFS2_FORMAT_MULTI)
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return 0;
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if (sb->sb_fs_format != GFS2_FORMAT_FS) {
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for (x = 0; gfs2_old_fs_formats[x]; x++)
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if (gfs2_old_fs_formats[x] == sb->sb_fs_format)
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break;
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if (!gfs2_old_fs_formats[x]) {
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printk(KERN_WARNING
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"GFS2: code version (%u, %u) is incompatible "
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"with ondisk format (%u, %u)\n",
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GFS2_FORMAT_FS, GFS2_FORMAT_MULTI,
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sb->sb_fs_format, sb->sb_multihost_format);
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printk(KERN_WARNING
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"GFS2: I don't know how to upgrade this FS\n");
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return -EINVAL;
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}
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}
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if (sb->sb_multihost_format != GFS2_FORMAT_MULTI) {
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for (x = 0; gfs2_old_multihost_formats[x]; x++)
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if (gfs2_old_multihost_formats[x] ==
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sb->sb_multihost_format)
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break;
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if (!gfs2_old_multihost_formats[x]) {
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printk(KERN_WARNING
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"GFS2: code version (%u, %u) is incompatible "
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"with ondisk format (%u, %u)\n",
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GFS2_FORMAT_FS, GFS2_FORMAT_MULTI,
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sb->sb_fs_format, sb->sb_multihost_format);
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printk(KERN_WARNING
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"GFS2: I don't know how to upgrade this FS\n");
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return -EINVAL;
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}
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}
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if (!sdp->sd_args.ar_upgrade) {
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printk(KERN_WARNING
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"GFS2: code version (%u, %u) is incompatible "
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"with ondisk format (%u, %u)\n",
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GFS2_FORMAT_FS, GFS2_FORMAT_MULTI,
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sb->sb_fs_format, sb->sb_multihost_format);
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printk(KERN_INFO
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"GFS2: Use the \"upgrade\" mount option to upgrade "
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"the FS\n");
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printk(KERN_INFO "GFS2: See the manual for more details\n");
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return -EINVAL;
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}
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return 0;
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}
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static void end_bio_io_page(struct bio *bio, int error)
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{
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struct page *page = bio->bi_private;
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if (!error)
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SetPageUptodate(page);
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else
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printk(KERN_WARNING "gfs2: error %d reading superblock\n", error);
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unlock_page(page);
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}
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static void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf)
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{
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const struct gfs2_sb *str = buf;
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sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic);
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sb->sb_type = be32_to_cpu(str->sb_header.mh_type);
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sb->sb_format = be32_to_cpu(str->sb_header.mh_format);
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sb->sb_fs_format = be32_to_cpu(str->sb_fs_format);
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sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format);
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sb->sb_bsize = be32_to_cpu(str->sb_bsize);
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sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift);
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sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr);
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sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino);
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sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr);
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sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino);
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memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
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memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
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}
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/**
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* gfs2_read_super - Read the gfs2 super block from disk
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* @sdp: The GFS2 super block
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* @sector: The location of the super block
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* @error: The error code to return
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*
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* This uses the bio functions to read the super block from disk
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* because we want to be 100% sure that we never read cached data.
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* A super block is read twice only during each GFS2 mount and is
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* never written to by the filesystem. The first time its read no
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* locks are held, and the only details which are looked at are those
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* relating to the locking protocol. Once locking is up and working,
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* the sb is read again under the lock to establish the location of
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* the master directory (contains pointers to journals etc) and the
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* root directory.
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*
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* Returns: 0 on success or error
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*/
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static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector)
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{
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struct super_block *sb = sdp->sd_vfs;
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struct gfs2_sb *p;
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struct page *page;
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struct bio *bio;
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page = alloc_page(GFP_NOFS);
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if (unlikely(!page))
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return -ENOBUFS;
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ClearPageUptodate(page);
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ClearPageDirty(page);
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lock_page(page);
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bio = bio_alloc(GFP_NOFS, 1);
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if (unlikely(!bio)) {
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__free_page(page);
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return -ENOBUFS;
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}
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bio->bi_sector = sector * (sb->s_blocksize >> 9);
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bio->bi_bdev = sb->s_bdev;
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bio_add_page(bio, page, PAGE_SIZE, 0);
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bio->bi_end_io = end_bio_io_page;
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bio->bi_private = page;
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submit_bio(READ_SYNC | (1 << BIO_RW_META), bio);
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wait_on_page_locked(page);
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bio_put(bio);
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if (!PageUptodate(page)) {
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__free_page(page);
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return -EIO;
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}
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p = kmap(page);
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gfs2_sb_in(&sdp->sd_sb, p);
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kunmap(page);
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__free_page(page);
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return 0;
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}
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/**
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* gfs2_read_sb - Read super block
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* @sdp: The GFS2 superblock
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* @gl: the glock for the superblock (assumed to be held)
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* @silent: Don't print message if mount fails
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*
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*/
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static int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent)
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{
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u32 hash_blocks, ind_blocks, leaf_blocks;
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u32 tmp_blocks;
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unsigned int x;
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int error;
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error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
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if (error) {
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if (!silent)
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fs_err(sdp, "can't read superblock\n");
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return error;
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}
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error = gfs2_check_sb(sdp, &sdp->sd_sb, silent);
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if (error)
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return error;
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sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
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GFS2_BASIC_BLOCK_SHIFT;
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sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
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sdp->sd_diptrs = (sdp->sd_sb.sb_bsize -
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sizeof(struct gfs2_dinode)) / sizeof(u64);
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sdp->sd_inptrs = (sdp->sd_sb.sb_bsize -
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sizeof(struct gfs2_meta_header)) / sizeof(u64);
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sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header);
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sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2;
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sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1;
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sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64);
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sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize -
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sizeof(struct gfs2_meta_header)) /
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sizeof(struct gfs2_quota_change);
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/* Compute maximum reservation required to add a entry to a directory */
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hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH),
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sdp->sd_jbsize);
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ind_blocks = 0;
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for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) {
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tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs);
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ind_blocks += tmp_blocks;
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}
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leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH;
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sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks;
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sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize -
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sizeof(struct gfs2_dinode);
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sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs;
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for (x = 2;; x++) {
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u64 space, d;
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u32 m;
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space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs;
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d = space;
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m = do_div(d, sdp->sd_inptrs);
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if (d != sdp->sd_heightsize[x - 1] || m)
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break;
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sdp->sd_heightsize[x] = space;
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}
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sdp->sd_max_height = x;
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sdp->sd_heightsize[x] = ~0;
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gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT);
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sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize -
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sizeof(struct gfs2_dinode);
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sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs;
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for (x = 2;; x++) {
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u64 space, d;
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u32 m;
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space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs;
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d = space;
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m = do_div(d, sdp->sd_inptrs);
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if (d != sdp->sd_jheightsize[x - 1] || m)
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break;
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sdp->sd_jheightsize[x] = space;
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}
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sdp->sd_max_jheight = x;
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sdp->sd_jheightsize[x] = ~0;
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gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT);
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return 0;
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}
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static int init_names(struct gfs2_sbd *sdp, int silent)
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{
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char *proto, *table;
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int error = 0;
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proto = sdp->sd_args.ar_lockproto;
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table = sdp->sd_args.ar_locktable;
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/* Try to autodetect */
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if (!proto[0] || !table[0]) {
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error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
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if (error)
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return error;
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error = gfs2_check_sb(sdp, &sdp->sd_sb, silent);
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if (error)
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goto out;
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if (!proto[0])
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proto = sdp->sd_sb.sb_lockproto;
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if (!table[0])
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table = sdp->sd_sb.sb_locktable;
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}
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if (!table[0])
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table = sdp->sd_vfs->s_id;
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strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN);
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strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN);
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table = sdp->sd_table_name;
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while ((table = strchr(table, '/')))
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*table = '_';
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out:
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return error;
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}
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|
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static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
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int undo)
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{
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int error = 0;
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if (undo)
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goto fail_trans;
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error = gfs2_glock_nq_num(sdp,
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GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
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LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE,
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mount_gh);
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if (error) {
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fs_err(sdp, "can't acquire mount glock: %d\n", error);
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goto fail;
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}
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error = gfs2_glock_nq_num(sdp,
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GFS2_LIVE_LOCK, &gfs2_nondisk_glops,
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LM_ST_SHARED,
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LM_FLAG_NOEXP | GL_EXACT,
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&sdp->sd_live_gh);
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if (error) {
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fs_err(sdp, "can't acquire live glock: %d\n", error);
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goto fail_mount;
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}
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error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops,
|
|
CREATE, &sdp->sd_rename_gl);
|
|
if (error) {
|
|
fs_err(sdp, "can't create rename glock: %d\n", error);
|
|
goto fail_live;
|
|
}
|
|
|
|
error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops,
|
|
CREATE, &sdp->sd_trans_gl);
|
|
if (error) {
|
|
fs_err(sdp, "can't create transaction glock: %d\n", error);
|
|
goto fail_rename;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail_trans:
|
|
gfs2_glock_put(sdp->sd_trans_gl);
|
|
fail_rename:
|
|
gfs2_glock_put(sdp->sd_rename_gl);
|
|
fail_live:
|
|
gfs2_glock_dq_uninit(&sdp->sd_live_gh);
|
|
fail_mount:
|
|
gfs2_glock_dq_uninit(mount_gh);
|
|
fail:
|
|
return error;
|
|
}
|
|
|
|
static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr,
|
|
u64 no_addr, const char *name)
|
|
{
|
|
struct gfs2_sbd *sdp = sb->s_fs_info;
|
|
struct dentry *dentry;
|
|
struct inode *inode;
|
|
|
|
inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0);
|
|
if (IS_ERR(inode)) {
|
|
fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode));
|
|
return PTR_ERR(inode);
|
|
}
|
|
dentry = d_alloc_root(inode);
|
|
if (!dentry) {
|
|
fs_err(sdp, "can't alloc %s dentry\n", name);
|
|
iput(inode);
|
|
return -ENOMEM;
|
|
}
|
|
dentry->d_op = &gfs2_dops;
|
|
*dptr = dentry;
|
|
return 0;
|
|
}
|
|
|
|
static int init_sb(struct gfs2_sbd *sdp, int silent)
|
|
{
|
|
struct super_block *sb = sdp->sd_vfs;
|
|
struct gfs2_holder sb_gh;
|
|
u64 no_addr;
|
|
int ret;
|
|
|
|
ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops,
|
|
LM_ST_SHARED, 0, &sb_gh);
|
|
if (ret) {
|
|
fs_err(sdp, "can't acquire superblock glock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = gfs2_read_sb(sdp, sb_gh.gh_gl, silent);
|
|
if (ret) {
|
|
fs_err(sdp, "can't read superblock: %d\n", ret);
|
|
goto out;
|
|
}
|
|
|
|
/* Set up the buffer cache and SB for real */
|
|
if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) {
|
|
ret = -EINVAL;
|
|
fs_err(sdp, "FS block size (%u) is too small for device "
|
|
"block size (%u)\n",
|
|
sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev));
|
|
goto out;
|
|
}
|
|
if (sdp->sd_sb.sb_bsize > PAGE_SIZE) {
|
|
ret = -EINVAL;
|
|
fs_err(sdp, "FS block size (%u) is too big for machine "
|
|
"page size (%u)\n",
|
|
sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE);
|
|
goto out;
|
|
}
|
|
sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
|
|
|
|
/* Get the root inode */
|
|
no_addr = sdp->sd_sb.sb_root_dir.no_addr;
|
|
ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root");
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* Get the master inode */
|
|
no_addr = sdp->sd_sb.sb_master_dir.no_addr;
|
|
ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master");
|
|
if (ret) {
|
|
dput(sdp->sd_root_dir);
|
|
goto out;
|
|
}
|
|
sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir);
|
|
out:
|
|
gfs2_glock_dq_uninit(&sb_gh);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* map_journal_extents - create a reusable "extent" mapping from all logical
|
|
* blocks to all physical blocks for the given journal. This will save
|
|
* us time when writing journal blocks. Most journals will have only one
|
|
* extent that maps all their logical blocks. That's because gfs2.mkfs
|
|
* arranges the journal blocks sequentially to maximize performance.
|
|
* So the extent would map the first block for the entire file length.
|
|
* However, gfs2_jadd can happen while file activity is happening, so
|
|
* those journals may not be sequential. Less likely is the case where
|
|
* the users created their own journals by mounting the metafs and
|
|
* laying it out. But it's still possible. These journals might have
|
|
* several extents.
|
|
*
|
|
* TODO: This should be done in bigger chunks rather than one block at a time,
|
|
* but since it's only done at mount time, I'm not worried about the
|
|
* time it takes.
|
|
*/
|
|
static int map_journal_extents(struct gfs2_sbd *sdp)
|
|
{
|
|
struct gfs2_jdesc *jd = sdp->sd_jdesc;
|
|
unsigned int lb;
|
|
u64 db, prev_db; /* logical block, disk block, prev disk block */
|
|
struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
|
|
struct gfs2_journal_extent *jext = NULL;
|
|
struct buffer_head bh;
|
|
int rc = 0;
|
|
|
|
prev_db = 0;
|
|
|
|
for (lb = 0; lb < ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; lb++) {
|
|
bh.b_state = 0;
|
|
bh.b_blocknr = 0;
|
|
bh.b_size = 1 << ip->i_inode.i_blkbits;
|
|
rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0);
|
|
db = bh.b_blocknr;
|
|
if (rc || !db) {
|
|
printk(KERN_INFO "GFS2 journal mapping error %d: lb="
|
|
"%u db=%llu\n", rc, lb, (unsigned long long)db);
|
|
break;
|
|
}
|
|
if (!prev_db || db != prev_db + 1) {
|
|
jext = kzalloc(sizeof(struct gfs2_journal_extent),
|
|
GFP_KERNEL);
|
|
if (!jext) {
|
|
printk(KERN_INFO "GFS2 error: out of memory "
|
|
"mapping journal extents.\n");
|
|
rc = -ENOMEM;
|
|
break;
|
|
}
|
|
jext->dblock = db;
|
|
jext->lblock = lb;
|
|
jext->blocks = 1;
|
|
list_add_tail(&jext->extent_list, &jd->extent_list);
|
|
} else {
|
|
jext->blocks++;
|
|
}
|
|
prev_db = db;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp)
|
|
{
|
|
if (!sdp->sd_lockstruct.ls_ops->lm_others_may_mount)
|
|
return;
|
|
if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
|
|
sdp->sd_lockstruct.ls_ops->lm_others_may_mount(
|
|
sdp->sd_lockstruct.ls_lockspace);
|
|
}
|
|
|
|
/**
|
|
* gfs2_jindex_hold - Grab a lock on the jindex
|
|
* @sdp: The GFS2 superblock
|
|
* @ji_gh: the holder for the jindex glock
|
|
*
|
|
* Returns: errno
|
|
*/
|
|
|
|
static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
|
|
{
|
|
struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex);
|
|
struct qstr name;
|
|
char buf[20];
|
|
struct gfs2_jdesc *jd;
|
|
int error;
|
|
|
|
name.name = buf;
|
|
|
|
mutex_lock(&sdp->sd_jindex_mutex);
|
|
|
|
for (;;) {
|
|
error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
|
|
if (error)
|
|
break;
|
|
|
|
name.len = sprintf(buf, "journal%u", sdp->sd_journals);
|
|
name.hash = gfs2_disk_hash(name.name, name.len);
|
|
|
|
error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
|
|
if (error == -ENOENT) {
|
|
error = 0;
|
|
break;
|
|
}
|
|
|
|
gfs2_glock_dq_uninit(ji_gh);
|
|
|
|
if (error)
|
|
break;
|
|
|
|
error = -ENOMEM;
|
|
jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL);
|
|
if (!jd)
|
|
break;
|
|
|
|
INIT_LIST_HEAD(&jd->extent_list);
|
|
jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
|
|
if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
|
|
if (!jd->jd_inode)
|
|
error = -ENOENT;
|
|
else
|
|
error = PTR_ERR(jd->jd_inode);
|
|
kfree(jd);
|
|
break;
|
|
}
|
|
|
|
spin_lock(&sdp->sd_jindex_spin);
|
|
jd->jd_jid = sdp->sd_journals++;
|
|
list_add_tail(&jd->jd_list, &sdp->sd_jindex_list);
|
|
spin_unlock(&sdp->sd_jindex_spin);
|
|
}
|
|
|
|
mutex_unlock(&sdp->sd_jindex_mutex);
|
|
|
|
return error;
|
|
}
|
|
|
|
static int init_journal(struct gfs2_sbd *sdp, int undo)
|
|
{
|
|
struct inode *master = sdp->sd_master_dir->d_inode;
|
|
struct gfs2_holder ji_gh;
|
|
struct task_struct *p;
|
|
struct gfs2_inode *ip;
|
|
int jindex = 1;
|
|
int error = 0;
|
|
|
|
if (undo) {
|
|
jindex = 0;
|
|
goto fail_recoverd;
|
|
}
|
|
|
|
sdp->sd_jindex = gfs2_lookup_simple(master, "jindex");
|
|
if (IS_ERR(sdp->sd_jindex)) {
|
|
fs_err(sdp, "can't lookup journal index: %d\n", error);
|
|
return PTR_ERR(sdp->sd_jindex);
|
|
}
|
|
ip = GFS2_I(sdp->sd_jindex);
|
|
|
|
/* Load in the journal index special file */
|
|
|
|
error = gfs2_jindex_hold(sdp, &ji_gh);
|
|
if (error) {
|
|
fs_err(sdp, "can't read journal index: %d\n", error);
|
|
goto fail;
|
|
}
|
|
|
|
error = -EINVAL;
|
|
if (!gfs2_jindex_size(sdp)) {
|
|
fs_err(sdp, "no journals!\n");
|
|
goto fail_jindex;
|
|
}
|
|
|
|
if (sdp->sd_args.ar_spectator) {
|
|
sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0);
|
|
atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
|
|
} else {
|
|
if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) {
|
|
fs_err(sdp, "can't mount journal #%u\n",
|
|
sdp->sd_lockstruct.ls_jid);
|
|
fs_err(sdp, "there are only %u journals (0 - %u)\n",
|
|
gfs2_jindex_size(sdp),
|
|
gfs2_jindex_size(sdp) - 1);
|
|
goto fail_jindex;
|
|
}
|
|
sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid);
|
|
|
|
error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid,
|
|
&gfs2_journal_glops,
|
|
LM_ST_EXCLUSIVE, LM_FLAG_NOEXP,
|
|
&sdp->sd_journal_gh);
|
|
if (error) {
|
|
fs_err(sdp, "can't acquire journal glock: %d\n", error);
|
|
goto fail_jindex;
|
|
}
|
|
|
|
ip = GFS2_I(sdp->sd_jdesc->jd_inode);
|
|
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
|
|
LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE,
|
|
&sdp->sd_jinode_gh);
|
|
if (error) {
|
|
fs_err(sdp, "can't acquire journal inode glock: %d\n",
|
|
error);
|
|
goto fail_journal_gh;
|
|
}
|
|
|
|
error = gfs2_jdesc_check(sdp->sd_jdesc);
|
|
if (error) {
|
|
fs_err(sdp, "my journal (%u) is bad: %d\n",
|
|
sdp->sd_jdesc->jd_jid, error);
|
|
goto fail_jinode_gh;
|
|
}
|
|
atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
|
|
|
|
/* Map the extents for this journal's blocks */
|
|
map_journal_extents(sdp);
|
|
}
|
|
|
|
if (sdp->sd_lockstruct.ls_first) {
|
|
unsigned int x;
|
|
for (x = 0; x < sdp->sd_journals; x++) {
|
|
error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x));
|
|
if (error) {
|
|
fs_err(sdp, "error recovering journal %u: %d\n",
|
|
x, error);
|
|
goto fail_jinode_gh;
|
|
}
|
|
}
|
|
|
|
gfs2_lm_others_may_mount(sdp);
|
|
} else if (!sdp->sd_args.ar_spectator) {
|
|
error = gfs2_recover_journal(sdp->sd_jdesc);
|
|
if (error) {
|
|
fs_err(sdp, "error recovering my journal: %d\n", error);
|
|
goto fail_jinode_gh;
|
|
}
|
|
}
|
|
|
|
set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags);
|
|
gfs2_glock_dq_uninit(&ji_gh);
|
|
jindex = 0;
|
|
|
|
p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd");
|
|
error = IS_ERR(p);
|
|
if (error) {
|
|
fs_err(sdp, "can't start recoverd thread: %d\n", error);
|
|
goto fail_jinode_gh;
|
|
}
|
|
sdp->sd_recoverd_process = p;
|
|
|
|
return 0;
|
|
|
|
fail_recoverd:
|
|
kthread_stop(sdp->sd_recoverd_process);
|
|
fail_jinode_gh:
|
|
if (!sdp->sd_args.ar_spectator)
|
|
gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
|
|
fail_journal_gh:
|
|
if (!sdp->sd_args.ar_spectator)
|
|
gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
|
|
fail_jindex:
|
|
gfs2_jindex_free(sdp);
|
|
if (jindex)
|
|
gfs2_glock_dq_uninit(&ji_gh);
|
|
fail:
|
|
iput(sdp->sd_jindex);
|
|
return error;
|
|
}
|
|
|
|
|
|
static int init_inodes(struct gfs2_sbd *sdp, int undo)
|
|
{
|
|
int error = 0;
|
|
struct gfs2_inode *ip;
|
|
struct inode *master = sdp->sd_master_dir->d_inode;
|
|
|
|
if (undo)
|
|
goto fail_qinode;
|
|
|
|
error = init_journal(sdp, undo);
|
|
if (error)
|
|
goto fail;
|
|
|
|
/* Read in the master inode number inode */
|
|
sdp->sd_inum_inode = gfs2_lookup_simple(master, "inum");
|
|
if (IS_ERR(sdp->sd_inum_inode)) {
|
|
error = PTR_ERR(sdp->sd_inum_inode);
|
|
fs_err(sdp, "can't read in inum inode: %d\n", error);
|
|
goto fail_journal;
|
|
}
|
|
|
|
|
|
/* Read in the master statfs inode */
|
|
sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs");
|
|
if (IS_ERR(sdp->sd_statfs_inode)) {
|
|
error = PTR_ERR(sdp->sd_statfs_inode);
|
|
fs_err(sdp, "can't read in statfs inode: %d\n", error);
|
|
goto fail_inum;
|
|
}
|
|
|
|
/* Read in the resource index inode */
|
|
sdp->sd_rindex = gfs2_lookup_simple(master, "rindex");
|
|
if (IS_ERR(sdp->sd_rindex)) {
|
|
error = PTR_ERR(sdp->sd_rindex);
|
|
fs_err(sdp, "can't get resource index inode: %d\n", error);
|
|
goto fail_statfs;
|
|
}
|
|
ip = GFS2_I(sdp->sd_rindex);
|
|
sdp->sd_rindex_uptodate = 0;
|
|
|
|
/* Read in the quota inode */
|
|
sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota");
|
|
if (IS_ERR(sdp->sd_quota_inode)) {
|
|
error = PTR_ERR(sdp->sd_quota_inode);
|
|
fs_err(sdp, "can't get quota file inode: %d\n", error);
|
|
goto fail_rindex;
|
|
}
|
|
return 0;
|
|
|
|
fail_qinode:
|
|
iput(sdp->sd_quota_inode);
|
|
fail_rindex:
|
|
gfs2_clear_rgrpd(sdp);
|
|
iput(sdp->sd_rindex);
|
|
fail_statfs:
|
|
iput(sdp->sd_statfs_inode);
|
|
fail_inum:
|
|
iput(sdp->sd_inum_inode);
|
|
fail_journal:
|
|
init_journal(sdp, UNDO);
|
|
fail:
|
|
return error;
|
|
}
|
|
|
|
static int init_per_node(struct gfs2_sbd *sdp, int undo)
|
|
{
|
|
struct inode *pn = NULL;
|
|
char buf[30];
|
|
int error = 0;
|
|
struct gfs2_inode *ip;
|
|
struct inode *master = sdp->sd_master_dir->d_inode;
|
|
|
|
if (sdp->sd_args.ar_spectator)
|
|
return 0;
|
|
|
|
if (undo)
|
|
goto fail_qc_gh;
|
|
|
|
pn = gfs2_lookup_simple(master, "per_node");
|
|
if (IS_ERR(pn)) {
|
|
error = PTR_ERR(pn);
|
|
fs_err(sdp, "can't find per_node directory: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid);
|
|
sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf);
|
|
if (IS_ERR(sdp->sd_ir_inode)) {
|
|
error = PTR_ERR(sdp->sd_ir_inode);
|
|
fs_err(sdp, "can't find local \"ir\" file: %d\n", error);
|
|
goto fail;
|
|
}
|
|
|
|
sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid);
|
|
sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf);
|
|
if (IS_ERR(sdp->sd_sc_inode)) {
|
|
error = PTR_ERR(sdp->sd_sc_inode);
|
|
fs_err(sdp, "can't find local \"sc\" file: %d\n", error);
|
|
goto fail_ir_i;
|
|
}
|
|
|
|
sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid);
|
|
sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf);
|
|
if (IS_ERR(sdp->sd_qc_inode)) {
|
|
error = PTR_ERR(sdp->sd_qc_inode);
|
|
fs_err(sdp, "can't find local \"qc\" file: %d\n", error);
|
|
goto fail_ut_i;
|
|
}
|
|
|
|
iput(pn);
|
|
pn = NULL;
|
|
|
|
ip = GFS2_I(sdp->sd_ir_inode);
|
|
error = gfs2_glock_nq_init(ip->i_gl,
|
|
LM_ST_EXCLUSIVE, 0,
|
|
&sdp->sd_ir_gh);
|
|
if (error) {
|
|
fs_err(sdp, "can't lock local \"ir\" file: %d\n", error);
|
|
goto fail_qc_i;
|
|
}
|
|
|
|
ip = GFS2_I(sdp->sd_sc_inode);
|
|
error = gfs2_glock_nq_init(ip->i_gl,
|
|
LM_ST_EXCLUSIVE, 0,
|
|
&sdp->sd_sc_gh);
|
|
if (error) {
|
|
fs_err(sdp, "can't lock local \"sc\" file: %d\n", error);
|
|
goto fail_ir_gh;
|
|
}
|
|
|
|
ip = GFS2_I(sdp->sd_qc_inode);
|
|
error = gfs2_glock_nq_init(ip->i_gl,
|
|
LM_ST_EXCLUSIVE, 0,
|
|
&sdp->sd_qc_gh);
|
|
if (error) {
|
|
fs_err(sdp, "can't lock local \"qc\" file: %d\n", error);
|
|
goto fail_ut_gh;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail_qc_gh:
|
|
gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
|
|
fail_ut_gh:
|
|
gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
|
|
fail_ir_gh:
|
|
gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
|
|
fail_qc_i:
|
|
iput(sdp->sd_qc_inode);
|
|
fail_ut_i:
|
|
iput(sdp->sd_sc_inode);
|
|
fail_ir_i:
|
|
iput(sdp->sd_ir_inode);
|
|
fail:
|
|
if (pn)
|
|
iput(pn);
|
|
return error;
|
|
}
|
|
|
|
static int init_threads(struct gfs2_sbd *sdp, int undo)
|
|
{
|
|
struct task_struct *p;
|
|
int error = 0;
|
|
|
|
if (undo)
|
|
goto fail_quotad;
|
|
|
|
sdp->sd_log_flush_time = jiffies;
|
|
sdp->sd_jindex_refresh_time = jiffies;
|
|
|
|
p = kthread_run(gfs2_logd, sdp, "gfs2_logd");
|
|
error = IS_ERR(p);
|
|
if (error) {
|
|
fs_err(sdp, "can't start logd thread: %d\n", error);
|
|
return error;
|
|
}
|
|
sdp->sd_logd_process = p;
|
|
|
|
p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad");
|
|
error = IS_ERR(p);
|
|
if (error) {
|
|
fs_err(sdp, "can't start quotad thread: %d\n", error);
|
|
goto fail;
|
|
}
|
|
sdp->sd_quotad_process = p;
|
|
|
|
return 0;
|
|
|
|
|
|
fail_quotad:
|
|
kthread_stop(sdp->sd_quotad_process);
|
|
fail:
|
|
kthread_stop(sdp->sd_logd_process);
|
|
return error;
|
|
}
|
|
|
|
/**
|
|
* gfs2_lm_mount - mount a locking protocol
|
|
* @sdp: the filesystem
|
|
* @args: mount arguements
|
|
* @silent: if 1, don't complain if the FS isn't a GFS2 fs
|
|
*
|
|
* Returns: errno
|
|
*/
|
|
|
|
static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
|
|
{
|
|
char *proto = sdp->sd_proto_name;
|
|
char *table = sdp->sd_table_name;
|
|
int flags = LM_MFLAG_CONV_NODROP;
|
|
int error;
|
|
|
|
if (sdp->sd_args.ar_spectator)
|
|
flags |= LM_MFLAG_SPECTATOR;
|
|
|
|
fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table);
|
|
|
|
error = gfs2_mount_lockproto(proto, table, sdp->sd_args.ar_hostdata,
|
|
gfs2_glock_cb, sdp,
|
|
GFS2_MIN_LVB_SIZE, flags,
|
|
&sdp->sd_lockstruct, &sdp->sd_kobj);
|
|
if (error) {
|
|
fs_info(sdp, "can't mount proto=%s, table=%s, hostdata=%s\n",
|
|
proto, table, sdp->sd_args.ar_hostdata);
|
|
goto out;
|
|
}
|
|
|
|
if (gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_ops) ||
|
|
gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_lvb_size >=
|
|
GFS2_MIN_LVB_SIZE)) {
|
|
gfs2_unmount_lockproto(&sdp->sd_lockstruct);
|
|
goto out;
|
|
}
|
|
|
|
if (sdp->sd_args.ar_spectator)
|
|
snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table);
|
|
else
|
|
snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table,
|
|
sdp->sd_lockstruct.ls_jid);
|
|
|
|
fs_info(sdp, "Joined cluster. Now mounting FS...\n");
|
|
|
|
if ((sdp->sd_lockstruct.ls_flags & LM_LSFLAG_LOCAL) &&
|
|
!sdp->sd_args.ar_ignore_local_fs) {
|
|
sdp->sd_args.ar_localflocks = 1;
|
|
sdp->sd_args.ar_localcaching = 1;
|
|
}
|
|
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
void gfs2_lm_unmount(struct gfs2_sbd *sdp)
|
|
{
|
|
if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
|
|
gfs2_unmount_lockproto(&sdp->sd_lockstruct);
|
|
}
|
|
|
|
/**
|
|
* fill_super - Read in superblock
|
|
* @sb: The VFS superblock
|
|
* @data: Mount options
|
|
* @silent: Don't complain if it's not a GFS2 filesystem
|
|
*
|
|
* Returns: errno
|
|
*/
|
|
|
|
static int fill_super(struct super_block *sb, void *data, int silent)
|
|
{
|
|
struct gfs2_sbd *sdp;
|
|
struct gfs2_holder mount_gh;
|
|
int error;
|
|
|
|
sdp = init_sbd(sb);
|
|
if (!sdp) {
|
|
printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
error = gfs2_mount_args(sdp, (char *)data, 0);
|
|
if (error) {
|
|
printk(KERN_WARNING "GFS2: can't parse mount arguments\n");
|
|
goto fail;
|
|
}
|
|
|
|
sb->s_magic = GFS2_MAGIC;
|
|
sb->s_op = &gfs2_super_ops;
|
|
sb->s_export_op = &gfs2_export_ops;
|
|
sb->s_time_gran = 1;
|
|
sb->s_maxbytes = MAX_LFS_FILESIZE;
|
|
|
|
/* Set up the buffer cache and fill in some fake block size values
|
|
to allow us to read-in the on-disk superblock. */
|
|
sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK);
|
|
sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits;
|
|
sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
|
|
GFS2_BASIC_BLOCK_SHIFT;
|
|
sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
|
|
|
|
error = init_names(sdp, silent);
|
|
if (error)
|
|
goto fail;
|
|
|
|
gfs2_create_debugfs_file(sdp);
|
|
|
|
error = gfs2_sys_fs_add(sdp);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = gfs2_lm_mount(sdp, silent);
|
|
if (error)
|
|
goto fail_sys;
|
|
|
|
error = init_locking(sdp, &mount_gh, DO);
|
|
if (error)
|
|
goto fail_lm;
|
|
|
|
error = init_sb(sdp, silent);
|
|
if (error)
|
|
goto fail_locking;
|
|
|
|
error = init_inodes(sdp, DO);
|
|
if (error)
|
|
goto fail_sb;
|
|
|
|
error = init_per_node(sdp, DO);
|
|
if (error)
|
|
goto fail_inodes;
|
|
|
|
error = gfs2_statfs_init(sdp);
|
|
if (error) {
|
|
fs_err(sdp, "can't initialize statfs subsystem: %d\n", error);
|
|
goto fail_per_node;
|
|
}
|
|
|
|
error = init_threads(sdp, DO);
|
|
if (error)
|
|
goto fail_per_node;
|
|
|
|
if (!(sb->s_flags & MS_RDONLY)) {
|
|
error = gfs2_make_fs_rw(sdp);
|
|
if (error) {
|
|
fs_err(sdp, "can't make FS RW: %d\n", error);
|
|
goto fail_threads;
|
|
}
|
|
}
|
|
|
|
gfs2_glock_dq_uninit(&mount_gh);
|
|
|
|
return 0;
|
|
|
|
fail_threads:
|
|
init_threads(sdp, UNDO);
|
|
fail_per_node:
|
|
init_per_node(sdp, UNDO);
|
|
fail_inodes:
|
|
init_inodes(sdp, UNDO);
|
|
fail_sb:
|
|
if (sdp->sd_root_dir)
|
|
dput(sdp->sd_root_dir);
|
|
if (sdp->sd_master_dir)
|
|
dput(sdp->sd_master_dir);
|
|
sb->s_root = NULL;
|
|
fail_locking:
|
|
init_locking(sdp, &mount_gh, UNDO);
|
|
fail_lm:
|
|
gfs2_gl_hash_clear(sdp);
|
|
gfs2_lm_unmount(sdp);
|
|
while (invalidate_inodes(sb))
|
|
yield();
|
|
fail_sys:
|
|
gfs2_sys_fs_del(sdp);
|
|
fail:
|
|
gfs2_delete_debugfs_file(sdp);
|
|
kfree(sdp);
|
|
sb->s_fs_info = NULL;
|
|
return error;
|
|
}
|
|
|
|
static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
|
|
const char *dev_name, void *data, struct vfsmount *mnt)
|
|
{
|
|
return get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt);
|
|
}
|
|
|
|
static struct super_block *get_gfs2_sb(const char *dev_name)
|
|
{
|
|
struct super_block *sb;
|
|
struct nameidata nd;
|
|
int error;
|
|
|
|
error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd);
|
|
if (error) {
|
|
printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n",
|
|
dev_name, error);
|
|
return NULL;
|
|
}
|
|
sb = nd.path.dentry->d_inode->i_sb;
|
|
if (sb && (sb->s_type == &gfs2_fs_type))
|
|
atomic_inc(&sb->s_active);
|
|
else
|
|
sb = NULL;
|
|
path_put(&nd.path);
|
|
return sb;
|
|
}
|
|
|
|
static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags,
|
|
const char *dev_name, void *data, struct vfsmount *mnt)
|
|
{
|
|
struct super_block *sb = NULL;
|
|
struct gfs2_sbd *sdp;
|
|
|
|
sb = get_gfs2_sb(dev_name);
|
|
if (!sb) {
|
|
printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n");
|
|
return -ENOENT;
|
|
}
|
|
sdp = sb->s_fs_info;
|
|
mnt->mnt_sb = sb;
|
|
mnt->mnt_root = dget(sdp->sd_master_dir);
|
|
return 0;
|
|
}
|
|
|
|
static void gfs2_kill_sb(struct super_block *sb)
|
|
{
|
|
struct gfs2_sbd *sdp = sb->s_fs_info;
|
|
|
|
if (sdp == NULL) {
|
|
kill_block_super(sb);
|
|
return;
|
|
}
|
|
|
|
gfs2_meta_syncfs(sdp);
|
|
dput(sdp->sd_root_dir);
|
|
dput(sdp->sd_master_dir);
|
|
sdp->sd_root_dir = NULL;
|
|
sdp->sd_master_dir = NULL;
|
|
shrink_dcache_sb(sb);
|
|
kill_block_super(sb);
|
|
gfs2_delete_debugfs_file(sdp);
|
|
kfree(sdp);
|
|
}
|
|
|
|
struct file_system_type gfs2_fs_type = {
|
|
.name = "gfs2",
|
|
.fs_flags = FS_REQUIRES_DEV,
|
|
.get_sb = gfs2_get_sb,
|
|
.kill_sb = gfs2_kill_sb,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
struct file_system_type gfs2meta_fs_type = {
|
|
.name = "gfs2meta",
|
|
.fs_flags = FS_REQUIRES_DEV,
|
|
.get_sb = gfs2_get_sb_meta,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|