David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 11 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 12 | #include <linux/sched.h> |
| 13 | #include <linux/slab.h> |
| 14 | #include <linux/spinlock.h> |
| 15 | #include <linux/completion.h> |
| 16 | #include <linux/buffer_head.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 17 | #include <linux/blkdev.h> |
| 18 | #include <linux/kthread.h> |
Paul Gortmaker | afeacc8 | 2011-05-26 16:00:52 -0400 | [diff] [blame] | 19 | #include <linux/export.h> |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 20 | #include <linux/namei.h> |
| 21 | #include <linux/mount.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 22 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 23 | #include <linux/quotaops.h> |
Jan Kara | 56aa72d | 2012-09-05 16:55:11 -0400 | [diff] [blame] | 24 | #include <linux/lockdep.h> |
Eric W. Biederman | 7f78e03 | 2013-03-02 19:39:14 -0800 | [diff] [blame] | 25 | #include <linux/module.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 26 | |
| 27 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 28 | #include "incore.h" |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 29 | #include "bmap.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 30 | #include "glock.h" |
| 31 | #include "glops.h" |
| 32 | #include "inode.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 33 | #include "recovery.h" |
| 34 | #include "rgrp.h" |
| 35 | #include "super.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 36 | #include "sys.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 37 | #include "util.h" |
Steven Whitehouse | bb3b0e3 | 2007-08-16 16:03:57 +0100 | [diff] [blame] | 38 | #include "log.h" |
Steven Whitehouse | 9ac1b4d | 2008-11-19 10:08:22 +0000 | [diff] [blame] | 39 | #include "quota.h" |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 40 | #include "dir.h" |
Steven Whitehouse | 70d4ee9 | 2013-12-06 16:19:54 +0000 | [diff] [blame] | 41 | #include "meta_io.h" |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 42 | #include "trace_gfs2.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 43 | |
| 44 | #define DO 0 |
| 45 | #define UNDO 1 |
| 46 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 47 | /** |
| 48 | * gfs2_tune_init - Fill a gfs2_tune structure with default values |
| 49 | * @gt: tune |
| 50 | * |
| 51 | */ |
| 52 | |
| 53 | static void gfs2_tune_init(struct gfs2_tune *gt) |
| 54 | { |
| 55 | spin_lock_init(>->gt_spin); |
| 56 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 57 | gt->gt_quota_warn_period = 10; |
| 58 | gt->gt_quota_scale_num = 1; |
| 59 | gt->gt_quota_scale_den = 1; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 60 | gt->gt_new_files_jdata = 0; |
| 61 | gt->gt_max_readahead = 1 << 18; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 62 | gt->gt_complain_secs = 10; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 63 | } |
| 64 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 65 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
| 66 | { |
| 67 | struct gfs2_sbd *sdp; |
Steven Whitehouse | 70d4ee9 | 2013-12-06 16:19:54 +0000 | [diff] [blame] | 68 | struct address_space *mapping; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 69 | |
Steven Whitehouse | 85d1da6 | 2006-09-07 14:40:21 -0400 | [diff] [blame] | 70 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 71 | if (!sdp) |
| 72 | return NULL; |
| 73 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 74 | sb->s_fs_info = sdp; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 75 | sdp->sd_vfs = sb; |
Steven Whitehouse | a245769 | 2012-01-20 10:38:36 +0000 | [diff] [blame] | 76 | sdp->sd_lkstats = alloc_percpu(struct gfs2_pcpu_lkstats); |
| 77 | if (!sdp->sd_lkstats) { |
| 78 | kfree(sdp); |
| 79 | return NULL; |
| 80 | } |
| 81 | |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 82 | set_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 83 | gfs2_tune_init(&sdp->sd_tune); |
| 84 | |
Steven Whitehouse | e402746 | 2010-01-25 11:20:19 +0000 | [diff] [blame] | 85 | init_waitqueue_head(&sdp->sd_glock_wait); |
| 86 | atomic_set(&sdp->sd_glock_disposal, 0); |
Steven Whitehouse | 3942ae5 | 2011-07-11 08:53:30 +0100 | [diff] [blame] | 87 | init_completion(&sdp->sd_locking_init); |
Steven Whitehouse | fd95e81 | 2013-02-13 12:21:40 +0000 | [diff] [blame] | 88 | init_completion(&sdp->sd_wdack); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 89 | spin_lock_init(&sdp->sd_statfs_spin); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 90 | |
| 91 | spin_lock_init(&sdp->sd_rindex_spin); |
Bob Peterson | 7c9ca62 | 2011-08-31 09:53:19 +0100 | [diff] [blame] | 92 | sdp->sd_rindex_tree.rb_node = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 93 | |
| 94 | INIT_LIST_HEAD(&sdp->sd_jindex_list); |
| 95 | spin_lock_init(&sdp->sd_jindex_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 96 | mutex_init(&sdp->sd_jindex_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 97 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 98 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 99 | mutex_init(&sdp->sd_quota_mutex); |
Steven Whitehouse | e46c772 | 2013-10-04 12:29:34 +0100 | [diff] [blame] | 100 | mutex_init(&sdp->sd_quota_sync_mutex); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 101 | init_waitqueue_head(&sdp->sd_quota_wait); |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 102 | INIT_LIST_HEAD(&sdp->sd_trunc_list); |
| 103 | spin_lock_init(&sdp->sd_trunc_lock); |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 104 | spin_lock_init(&sdp->sd_bitmap_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 105 | |
Steven Whitehouse | 70d4ee9 | 2013-12-06 16:19:54 +0000 | [diff] [blame] | 106 | mapping = &sdp->sd_aspace; |
| 107 | |
Steven Whitehouse | 39849d6 | 2014-01-09 16:34:04 +0000 | [diff] [blame] | 108 | address_space_init_once(mapping); |
Steven Whitehouse | 70d4ee9 | 2013-12-06 16:19:54 +0000 | [diff] [blame] | 109 | mapping->a_ops = &gfs2_meta_aops; |
| 110 | mapping->host = sb->s_bdev->bd_inode; |
| 111 | mapping->flags = 0; |
| 112 | mapping_set_gfp_mask(mapping, GFP_NOFS); |
| 113 | mapping->private_data = NULL; |
| 114 | mapping->backing_dev_info = sb->s_bdi; |
| 115 | mapping->writeback_index = 0; |
| 116 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 117 | spin_lock_init(&sdp->sd_log_lock); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 118 | atomic_set(&sdp->sd_log_pinned, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 119 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); |
Steven Whitehouse | d7b616e | 2007-09-02 10:48:13 +0100 | [diff] [blame] | 120 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
Steven Whitehouse | 4513899 | 2013-01-28 09:30:07 +0000 | [diff] [blame] | 121 | spin_lock_init(&sdp->sd_ordered_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 122 | |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 123 | init_waitqueue_head(&sdp->sd_log_waitq); |
| 124 | init_waitqueue_head(&sdp->sd_logd_waitq); |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 125 | spin_lock_init(&sdp->sd_ail_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 126 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
| 127 | INIT_LIST_HEAD(&sdp->sd_ail2_list); |
| 128 | |
Steven Whitehouse | 484adff | 2006-03-29 09:12:12 -0500 | [diff] [blame] | 129 | init_rwsem(&sdp->sd_log_flush_lock); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 130 | atomic_set(&sdp->sd_log_in_flight, 0); |
| 131 | init_waitqueue_head(&sdp->sd_log_flush_wait); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 132 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 133 | return sdp; |
| 134 | } |
| 135 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 136 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 137 | /** |
| 138 | * gfs2_check_sb - Check superblock |
| 139 | * @sdp: the filesystem |
| 140 | * @sb: The superblock |
| 141 | * @silent: Don't print a message if the check fails |
| 142 | * |
| 143 | * Checks the version code of the FS is one that we understand how to |
| 144 | * read and that the sizes of the various on-disk structures have not |
| 145 | * changed. |
| 146 | */ |
| 147 | |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 148 | static int gfs2_check_sb(struct gfs2_sbd *sdp, int silent) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 149 | { |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 150 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
| 151 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 152 | if (sb->sb_magic != GFS2_MAGIC || |
| 153 | sb->sb_type != GFS2_METATYPE_SB) { |
| 154 | if (!silent) |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 155 | pr_warn("not a GFS2 filesystem\n"); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 156 | return -EINVAL; |
| 157 | } |
| 158 | |
| 159 | /* If format numbers match exactly, we're done. */ |
| 160 | |
| 161 | if (sb->sb_fs_format == GFS2_FORMAT_FS && |
| 162 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) |
| 163 | return 0; |
| 164 | |
Steven Whitehouse | c80dbb5 | 2010-09-24 09:55:07 +0100 | [diff] [blame] | 165 | fs_warn(sdp, "Unknown on-disk format, unable to mount\n"); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 166 | |
Steven Whitehouse | c80dbb5 | 2010-09-24 09:55:07 +0100 | [diff] [blame] | 167 | return -EINVAL; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | static void end_bio_io_page(struct bio *bio, int error) |
| 171 | { |
| 172 | struct page *page = bio->bi_private; |
| 173 | |
| 174 | if (!error) |
| 175 | SetPageUptodate(page); |
| 176 | else |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 177 | pr_warn("error %d reading superblock\n", error); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 178 | unlock_page(page); |
| 179 | } |
| 180 | |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 181 | static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 182 | { |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 183 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
| 184 | struct super_block *s = sdp->sd_vfs; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 185 | const struct gfs2_sb *str = buf; |
| 186 | |
| 187 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); |
| 188 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); |
| 189 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); |
| 190 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); |
| 191 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); |
| 192 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); |
| 193 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); |
| 194 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); |
| 195 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); |
| 196 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); |
| 197 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); |
| 198 | |
| 199 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); |
| 200 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 201 | memcpy(s->s_uuid, str->sb_uuid, 16); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | /** |
| 205 | * gfs2_read_super - Read the gfs2 super block from disk |
| 206 | * @sdp: The GFS2 super block |
| 207 | * @sector: The location of the super block |
| 208 | * @error: The error code to return |
| 209 | * |
| 210 | * This uses the bio functions to read the super block from disk |
| 211 | * because we want to be 100% sure that we never read cached data. |
| 212 | * A super block is read twice only during each GFS2 mount and is |
| 213 | * never written to by the filesystem. The first time its read no |
| 214 | * locks are held, and the only details which are looked at are those |
| 215 | * relating to the locking protocol. Once locking is up and working, |
| 216 | * the sb is read again under the lock to establish the location of |
| 217 | * the master directory (contains pointers to journals etc) and the |
| 218 | * root directory. |
| 219 | * |
| 220 | * Returns: 0 on success or error |
| 221 | */ |
| 222 | |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 223 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 224 | { |
| 225 | struct super_block *sb = sdp->sd_vfs; |
| 226 | struct gfs2_sb *p; |
| 227 | struct page *page; |
| 228 | struct bio *bio; |
| 229 | |
| 230 | page = alloc_page(GFP_NOFS); |
| 231 | if (unlikely(!page)) |
Steven Whitehouse | ac3beb6 | 2014-01-16 10:31:13 +0000 | [diff] [blame] | 232 | return -ENOMEM; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 233 | |
| 234 | ClearPageUptodate(page); |
| 235 | ClearPageDirty(page); |
| 236 | lock_page(page); |
| 237 | |
| 238 | bio = bio_alloc(GFP_NOFS, 1); |
Kent Overstreet | 4f024f3 | 2013-10-11 15:44:27 -0700 | [diff] [blame] | 239 | bio->bi_iter.bi_sector = sector * (sb->s_blocksize >> 9); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 240 | bio->bi_bdev = sb->s_bdev; |
| 241 | bio_add_page(bio, page, PAGE_SIZE, 0); |
| 242 | |
| 243 | bio->bi_end_io = end_bio_io_page; |
| 244 | bio->bi_private = page; |
Steven Whitehouse | 20ed053 | 2011-10-31 09:52:02 +0000 | [diff] [blame] | 245 | submit_bio(READ_SYNC | REQ_META, bio); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 246 | wait_on_page_locked(page); |
| 247 | bio_put(bio); |
| 248 | if (!PageUptodate(page)) { |
| 249 | __free_page(page); |
| 250 | return -EIO; |
| 251 | } |
| 252 | p = kmap(page); |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 253 | gfs2_sb_in(sdp, p); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 254 | kunmap(page); |
| 255 | __free_page(page); |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 256 | return gfs2_check_sb(sdp, silent); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 257 | } |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 258 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 259 | /** |
| 260 | * gfs2_read_sb - Read super block |
| 261 | * @sdp: The GFS2 superblock |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 262 | * @silent: Don't print message if mount fails |
| 263 | * |
| 264 | */ |
| 265 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 266 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 267 | { |
| 268 | u32 hash_blocks, ind_blocks, leaf_blocks; |
| 269 | u32 tmp_blocks; |
| 270 | unsigned int x; |
| 271 | int error; |
| 272 | |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 273 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 274 | if (error) { |
| 275 | if (!silent) |
| 276 | fs_err(sdp, "can't read superblock\n"); |
| 277 | return error; |
| 278 | } |
| 279 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 280 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
| 281 | GFS2_BASIC_BLOCK_SHIFT; |
| 282 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
| 283 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - |
| 284 | sizeof(struct gfs2_dinode)) / sizeof(u64); |
| 285 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - |
| 286 | sizeof(struct gfs2_meta_header)) / sizeof(u64); |
| 287 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); |
| 288 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; |
| 289 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; |
| 290 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); |
| 291 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - |
| 292 | sizeof(struct gfs2_meta_header)) / |
| 293 | sizeof(struct gfs2_quota_change); |
Bob Peterson | a68a0a3 | 2012-10-19 08:32:51 -0400 | [diff] [blame] | 294 | sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize - |
| 295 | sizeof(struct gfs2_meta_header)) |
| 296 | * GFS2_NBBY; /* not the rgrp bitmap, subsequent bitmaps only */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 297 | |
| 298 | /* Compute maximum reservation required to add a entry to a directory */ |
| 299 | |
| 300 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH), |
| 301 | sdp->sd_jbsize); |
| 302 | |
| 303 | ind_blocks = 0; |
| 304 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { |
| 305 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); |
| 306 | ind_blocks += tmp_blocks; |
| 307 | } |
| 308 | |
| 309 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; |
| 310 | |
| 311 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; |
| 312 | |
| 313 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - |
| 314 | sizeof(struct gfs2_dinode); |
| 315 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; |
| 316 | for (x = 2;; x++) { |
| 317 | u64 space, d; |
| 318 | u32 m; |
| 319 | |
| 320 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; |
| 321 | d = space; |
| 322 | m = do_div(d, sdp->sd_inptrs); |
| 323 | |
| 324 | if (d != sdp->sd_heightsize[x - 1] || m) |
| 325 | break; |
| 326 | sdp->sd_heightsize[x] = space; |
| 327 | } |
| 328 | sdp->sd_max_height = x; |
| 329 | sdp->sd_heightsize[x] = ~0; |
| 330 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); |
| 331 | |
| 332 | sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize - |
| 333 | sizeof(struct gfs2_dinode); |
| 334 | sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs; |
| 335 | for (x = 2;; x++) { |
| 336 | u64 space, d; |
| 337 | u32 m; |
| 338 | |
| 339 | space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs; |
| 340 | d = space; |
| 341 | m = do_div(d, sdp->sd_inptrs); |
| 342 | |
| 343 | if (d != sdp->sd_jheightsize[x - 1] || m) |
| 344 | break; |
| 345 | sdp->sd_jheightsize[x] = space; |
| 346 | } |
| 347 | sdp->sd_max_jheight = x; |
| 348 | sdp->sd_jheightsize[x] = ~0; |
| 349 | gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT); |
| 350 | |
| 351 | return 0; |
| 352 | } |
| 353 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 354 | static int init_names(struct gfs2_sbd *sdp, int silent) |
| 355 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 356 | char *proto, *table; |
| 357 | int error = 0; |
| 358 | |
| 359 | proto = sdp->sd_args.ar_lockproto; |
| 360 | table = sdp->sd_args.ar_locktable; |
| 361 | |
| 362 | /* Try to autodetect */ |
| 363 | |
| 364 | if (!proto[0] || !table[0]) { |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 365 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
Steven Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 366 | if (error) |
| 367 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 368 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 369 | if (!proto[0]) |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 370 | proto = sdp->sd_sb.sb_lockproto; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 371 | if (!table[0]) |
Steven Whitehouse | 3cf1e7b | 2006-10-02 11:49:41 -0400 | [diff] [blame] | 372 | table = sdp->sd_sb.sb_locktable; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 373 | } |
| 374 | |
| 375 | if (!table[0]) |
| 376 | table = sdp->sd_vfs->s_id; |
| 377 | |
Jean Delvare | 00377d8 | 2008-05-09 17:59:51 +0200 | [diff] [blame] | 378 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
| 379 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 380 | |
Denis Cheng | 5d35e31 | 2007-08-13 11:01:58 +0800 | [diff] [blame] | 381 | table = sdp->sd_table_name; |
| 382 | while ((table = strchr(table, '/'))) |
Robert Peterson | b35997d | 2007-06-07 09:10:01 -0500 | [diff] [blame] | 383 | *table = '_'; |
| 384 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 385 | return error; |
| 386 | } |
| 387 | |
| 388 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, |
| 389 | int undo) |
| 390 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 391 | int error = 0; |
| 392 | |
| 393 | if (undo) |
| 394 | goto fail_trans; |
| 395 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 396 | error = gfs2_glock_nq_num(sdp, |
| 397 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, |
| 398 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, |
| 399 | mount_gh); |
| 400 | if (error) { |
| 401 | fs_err(sdp, "can't acquire mount glock: %d\n", error); |
| 402 | goto fail; |
| 403 | } |
| 404 | |
| 405 | error = gfs2_glock_nq_num(sdp, |
| 406 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, |
| 407 | LM_ST_SHARED, |
Steven Whitehouse | 579b78a | 2006-04-26 14:58:26 -0400 | [diff] [blame] | 408 | LM_FLAG_NOEXP | GL_EXACT, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 409 | &sdp->sd_live_gh); |
| 410 | if (error) { |
| 411 | fs_err(sdp, "can't acquire live glock: %d\n", error); |
| 412 | goto fail_mount; |
| 413 | } |
| 414 | |
| 415 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, |
| 416 | CREATE, &sdp->sd_rename_gl); |
| 417 | if (error) { |
| 418 | fs_err(sdp, "can't create rename glock: %d\n", error); |
| 419 | goto fail_live; |
| 420 | } |
| 421 | |
| 422 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, |
| 423 | CREATE, &sdp->sd_trans_gl); |
| 424 | if (error) { |
| 425 | fs_err(sdp, "can't create transaction glock: %d\n", error); |
| 426 | goto fail_rename; |
| 427 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 428 | |
| 429 | return 0; |
| 430 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 431 | fail_trans: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 432 | gfs2_glock_put(sdp->sd_trans_gl); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 433 | fail_rename: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 434 | gfs2_glock_put(sdp->sd_rename_gl); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 435 | fail_live: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 436 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 437 | fail_mount: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 438 | gfs2_glock_dq_uninit(mount_gh); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 439 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 440 | return error; |
| 441 | } |
| 442 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 443 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
| 444 | u64 no_addr, const char *name) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 445 | { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 446 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 447 | struct dentry *dentry; |
| 448 | struct inode *inode; |
| 449 | |
Bob Peterson | 44ad37d | 2011-03-17 16:19:58 -0400 | [diff] [blame] | 450 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 451 | if (IS_ERR(inode)) { |
| 452 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); |
| 453 | return PTR_ERR(inode); |
| 454 | } |
Al Viro | 48fde70 | 2012-01-08 22:15:13 -0500 | [diff] [blame] | 455 | dentry = d_make_root(inode); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 456 | if (!dentry) { |
| 457 | fs_err(sdp, "can't alloc %s dentry\n", name); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 458 | return -ENOMEM; |
| 459 | } |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 460 | *dptr = dentry; |
| 461 | return 0; |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 462 | } |
| 463 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 464 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 465 | { |
| 466 | struct super_block *sb = sdp->sd_vfs; |
| 467 | struct gfs2_holder sb_gh; |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 468 | u64 no_addr; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 469 | int ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 470 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 471 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
| 472 | LM_ST_SHARED, 0, &sb_gh); |
| 473 | if (ret) { |
| 474 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); |
| 475 | return ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 476 | } |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 477 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 478 | ret = gfs2_read_sb(sdp, silent); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 479 | if (ret) { |
| 480 | fs_err(sdp, "can't read superblock: %d\n", ret); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 481 | goto out; |
| 482 | } |
| 483 | |
| 484 | /* Set up the buffer cache and SB for real */ |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 485 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 486 | ret = -EINVAL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 487 | fs_err(sdp, "FS block size (%u) is too small for device " |
| 488 | "block size (%u)\n", |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 489 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 490 | goto out; |
| 491 | } |
| 492 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 493 | ret = -EINVAL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 494 | fs_err(sdp, "FS block size (%u) is too big for machine " |
| 495 | "page size (%u)\n", |
| 496 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); |
| 497 | goto out; |
| 498 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 499 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
| 500 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 501 | /* Get the root inode */ |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 502 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 503 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
| 504 | if (ret) |
| 505 | goto out; |
| 506 | |
| 507 | /* Get the master inode */ |
| 508 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; |
| 509 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); |
| 510 | if (ret) { |
| 511 | dput(sdp->sd_root_dir); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 512 | goto out; |
| 513 | } |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 514 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 515 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 516 | gfs2_glock_dq_uninit(&sb_gh); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 517 | return ret; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 518 | } |
| 519 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 520 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 521 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 522 | char *message = "FIRSTMOUNT=Done"; |
| 523 | char *envp[] = { message, NULL }; |
David Teigland | e0c2a9a | 2012-01-09 17:18:05 -0500 | [diff] [blame] | 524 | |
| 525 | fs_info(sdp, "first mount done, others may mount\n"); |
| 526 | |
| 527 | if (sdp->sd_lockstruct.ls_ops->lm_first_done) |
| 528 | sdp->sd_lockstruct.ls_ops->lm_first_done(sdp); |
| 529 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 530 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 531 | } |
| 532 | |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 533 | /** |
| 534 | * gfs2_jindex_hold - Grab a lock on the jindex |
| 535 | * @sdp: The GFS2 superblock |
| 536 | * @ji_gh: the holder for the jindex glock |
| 537 | * |
| 538 | * Returns: errno |
| 539 | */ |
| 540 | |
| 541 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) |
| 542 | { |
| 543 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); |
| 544 | struct qstr name; |
| 545 | char buf[20]; |
| 546 | struct gfs2_jdesc *jd; |
| 547 | int error; |
| 548 | |
| 549 | name.name = buf; |
| 550 | |
| 551 | mutex_lock(&sdp->sd_jindex_mutex); |
| 552 | |
| 553 | for (;;) { |
| 554 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); |
| 555 | if (error) |
| 556 | break; |
| 557 | |
| 558 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); |
| 559 | name.hash = gfs2_disk_hash(name.name, name.len); |
| 560 | |
| 561 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); |
| 562 | if (error == -ENOENT) { |
| 563 | error = 0; |
| 564 | break; |
| 565 | } |
| 566 | |
| 567 | gfs2_glock_dq_uninit(ji_gh); |
| 568 | |
| 569 | if (error) |
| 570 | break; |
| 571 | |
| 572 | error = -ENOMEM; |
| 573 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); |
| 574 | if (!jd) |
| 575 | break; |
| 576 | |
| 577 | INIT_LIST_HEAD(&jd->extent_list); |
Bob Peterson | a17d758 | 2014-03-06 17:19:15 -0500 | [diff] [blame] | 578 | INIT_LIST_HEAD(&jd->jd_revoke_list); |
| 579 | |
Tejun Heo | 6ecd7c2 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 580 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
Steven Whitehouse | b528968 | 2008-11-26 12:49:26 +0000 | [diff] [blame] | 581 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
| 582 | if (!jd->jd_inode || IS_ERR(jd->jd_inode)) { |
| 583 | if (!jd->jd_inode) |
| 584 | error = -ENOENT; |
| 585 | else |
| 586 | error = PTR_ERR(jd->jd_inode); |
| 587 | kfree(jd); |
| 588 | break; |
| 589 | } |
| 590 | |
| 591 | spin_lock(&sdp->sd_jindex_spin); |
| 592 | jd->jd_jid = sdp->sd_journals++; |
| 593 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); |
| 594 | spin_unlock(&sdp->sd_jindex_spin); |
| 595 | } |
| 596 | |
| 597 | mutex_unlock(&sdp->sd_jindex_mutex); |
| 598 | |
| 599 | return error; |
| 600 | } |
| 601 | |
Bob Peterson | 1d12d17 | 2013-09-04 12:08:02 -0400 | [diff] [blame] | 602 | /** |
| 603 | * check_journal_clean - Make sure a journal is clean for a spectator mount |
| 604 | * @sdp: The GFS2 superblock |
| 605 | * @jd: The journal descriptor |
| 606 | * |
| 607 | * Returns: 0 if the journal is clean or locked, else an error |
| 608 | */ |
| 609 | static int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd) |
| 610 | { |
| 611 | int error; |
| 612 | struct gfs2_holder j_gh; |
| 613 | struct gfs2_log_header_host head; |
| 614 | struct gfs2_inode *ip; |
| 615 | |
| 616 | ip = GFS2_I(jd->jd_inode); |
| 617 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_NOEXP | |
| 618 | GL_EXACT | GL_NOCACHE, &j_gh); |
| 619 | if (error) { |
| 620 | fs_err(sdp, "Error locking journal for spectator mount.\n"); |
| 621 | return -EPERM; |
| 622 | } |
| 623 | error = gfs2_jdesc_check(jd); |
| 624 | if (error) { |
| 625 | fs_err(sdp, "Error checking journal for spectator mount.\n"); |
| 626 | goto out_unlock; |
| 627 | } |
| 628 | error = gfs2_find_jhead(jd, &head); |
| 629 | if (error) { |
| 630 | fs_err(sdp, "Error parsing journal for spectator mount.\n"); |
| 631 | goto out_unlock; |
| 632 | } |
| 633 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { |
| 634 | error = -EPERM; |
| 635 | fs_err(sdp, "jid=%u: Journal is dirty, so the first mounter " |
| 636 | "must not be a spectator.\n", jd->jd_jid); |
| 637 | } |
| 638 | |
| 639 | out_unlock: |
| 640 | gfs2_glock_dq_uninit(&j_gh); |
| 641 | return error; |
| 642 | } |
| 643 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 644 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
| 645 | { |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 646 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 647 | struct gfs2_holder ji_gh; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 648 | struct gfs2_inode *ip; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 649 | int jindex = 1; |
| 650 | int error = 0; |
| 651 | |
| 652 | if (undo) { |
| 653 | jindex = 0; |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 654 | goto fail_jinode_gh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 655 | } |
| 656 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 657 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 658 | if (IS_ERR(sdp->sd_jindex)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 659 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 660 | return PTR_ERR(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 661 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 662 | |
| 663 | /* Load in the journal index special file */ |
| 664 | |
| 665 | error = gfs2_jindex_hold(sdp, &ji_gh); |
| 666 | if (error) { |
| 667 | fs_err(sdp, "can't read journal index: %d\n", error); |
| 668 | goto fail; |
| 669 | } |
| 670 | |
Abhijith Das | 0e5a9fb | 2010-02-05 18:25:41 -0500 | [diff] [blame] | 671 | error = -EUSERS; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 672 | if (!gfs2_jindex_size(sdp)) { |
| 673 | fs_err(sdp, "no journals!\n"); |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 674 | goto fail_jindex; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 675 | } |
| 676 | |
| 677 | if (sdp->sd_args.ar_spectator) { |
| 678 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); |
Steven Whitehouse | fd041f0 | 2007-11-08 14:55:03 +0000 | [diff] [blame] | 679 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 680 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
| 681 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 682 | } else { |
| 683 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { |
| 684 | fs_err(sdp, "can't mount journal #%u\n", |
| 685 | sdp->sd_lockstruct.ls_jid); |
| 686 | fs_err(sdp, "there are only %u journals (0 - %u)\n", |
| 687 | gfs2_jindex_size(sdp), |
| 688 | gfs2_jindex_size(sdp) - 1); |
| 689 | goto fail_jindex; |
| 690 | } |
| 691 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); |
| 692 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 693 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 694 | &gfs2_journal_glops, |
| 695 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, |
| 696 | &sdp->sd_journal_gh); |
| 697 | if (error) { |
| 698 | fs_err(sdp, "can't acquire journal glock: %d\n", error); |
| 699 | goto fail_jindex; |
| 700 | } |
| 701 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 702 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
| 703 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, |
Bob Peterson | 75be73a | 2007-08-08 17:08:14 -0500 | [diff] [blame] | 704 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 705 | &sdp->sd_jinode_gh); |
| 706 | if (error) { |
| 707 | fs_err(sdp, "can't acquire journal inode glock: %d\n", |
| 708 | error); |
| 709 | goto fail_journal_gh; |
| 710 | } |
| 711 | |
| 712 | error = gfs2_jdesc_check(sdp->sd_jdesc); |
| 713 | if (error) { |
| 714 | fs_err(sdp, "my journal (%u) is bad: %d\n", |
| 715 | sdp->sd_jdesc->jd_jid, error); |
| 716 | goto fail_jinode_gh; |
| 717 | } |
Steven Whitehouse | fd041f0 | 2007-11-08 14:55:03 +0000 | [diff] [blame] | 718 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 719 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
| 720 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); |
Bob Peterson | da6dd40 | 2007-12-11 18:49:21 -0600 | [diff] [blame] | 721 | |
| 722 | /* Map the extents for this journal's blocks */ |
Steven Whitehouse | b50f227 | 2014-03-03 13:35:57 +0000 | [diff] [blame] | 723 | gfs2_map_journal_extents(sdp, sdp->sd_jdesc); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 724 | } |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 725 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 726 | |
| 727 | if (sdp->sd_lockstruct.ls_first) { |
| 728 | unsigned int x; |
| 729 | for (x = 0; x < sdp->sd_journals; x++) { |
Bob Peterson | 1d12d17 | 2013-09-04 12:08:02 -0400 | [diff] [blame] | 730 | struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x); |
| 731 | |
| 732 | if (sdp->sd_args.ar_spectator) { |
| 733 | error = check_journal_clean(sdp, jd); |
| 734 | if (error) |
| 735 | goto fail_jinode_gh; |
| 736 | continue; |
| 737 | } |
| 738 | error = gfs2_recover_journal(jd, true); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 739 | if (error) { |
| 740 | fs_err(sdp, "error recovering journal %u: %d\n", |
| 741 | x, error); |
| 742 | goto fail_jinode_gh; |
| 743 | } |
| 744 | } |
| 745 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 746 | gfs2_others_may_mount(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 747 | } else if (!sdp->sd_args.ar_spectator) { |
Tejun Heo | 6ecd7c2 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 748 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 749 | if (error) { |
| 750 | fs_err(sdp, "error recovering my journal: %d\n", error); |
| 751 | goto fail_jinode_gh; |
| 752 | } |
| 753 | } |
| 754 | |
| 755 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
| 756 | gfs2_glock_dq_uninit(&ji_gh); |
| 757 | jindex = 0; |
| 758 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 759 | return 0; |
| 760 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 761 | fail_jinode_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 762 | if (!sdp->sd_args.ar_spectator) |
| 763 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 764 | fail_journal_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 765 | if (!sdp->sd_args.ar_spectator) |
| 766 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 767 | fail_jindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 768 | gfs2_jindex_free(sdp); |
| 769 | if (jindex) |
| 770 | gfs2_glock_dq_uninit(&ji_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 771 | fail: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 772 | iput(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 773 | return error; |
| 774 | } |
| 775 | |
Jan Kara | 56aa72d | 2012-09-05 16:55:11 -0400 | [diff] [blame] | 776 | static struct lock_class_key gfs2_quota_imutex_key; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 777 | |
| 778 | static int init_inodes(struct gfs2_sbd *sdp, int undo) |
| 779 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 780 | int error = 0; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 781 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 782 | |
| 783 | if (undo) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 784 | goto fail_qinode; |
| 785 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 786 | error = init_journal(sdp, undo); |
| 787 | if (error) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 788 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 789 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 790 | /* Read in the master statfs inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 791 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 792 | if (IS_ERR(sdp->sd_statfs_inode)) { |
| 793 | error = PTR_ERR(sdp->sd_statfs_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 794 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 795 | goto fail_journal; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | /* Read in the resource index inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 799 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 800 | if (IS_ERR(sdp->sd_rindex)) { |
| 801 | error = PTR_ERR(sdp->sd_rindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 802 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
| 803 | goto fail_statfs; |
| 804 | } |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 805 | sdp->sd_rindex_uptodate = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 806 | |
| 807 | /* Read in the quota inode */ |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 808 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 809 | if (IS_ERR(sdp->sd_quota_inode)) { |
| 810 | error = PTR_ERR(sdp->sd_quota_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 811 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
| 812 | goto fail_rindex; |
| 813 | } |
Jan Kara | 56aa72d | 2012-09-05 16:55:11 -0400 | [diff] [blame] | 814 | /* |
| 815 | * i_mutex on quota files is special. Since this inode is hidden system |
| 816 | * file, we are safe to define locking ourselves. |
| 817 | */ |
| 818 | lockdep_set_class(&sdp->sd_quota_inode->i_mutex, |
| 819 | &gfs2_quota_imutex_key); |
Steven Whitehouse | a365fbf | 2012-02-24 15:09:14 +0000 | [diff] [blame] | 820 | |
| 821 | error = gfs2_rindex_update(sdp); |
| 822 | if (error) |
| 823 | goto fail_qinode; |
| 824 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 825 | return 0; |
| 826 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 827 | fail_qinode: |
| 828 | iput(sdp->sd_quota_inode); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 829 | fail_rindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 830 | gfs2_clear_rgrpd(sdp); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 831 | iput(sdp->sd_rindex); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 832 | fail_statfs: |
| 833 | iput(sdp->sd_statfs_inode); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 834 | fail_journal: |
| 835 | init_journal(sdp, UNDO); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 836 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 837 | return error; |
| 838 | } |
| 839 | |
| 840 | static int init_per_node(struct gfs2_sbd *sdp, int undo) |
| 841 | { |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 842 | struct inode *pn = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 843 | char buf[30]; |
| 844 | int error = 0; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 845 | struct gfs2_inode *ip; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 846 | struct inode *master = sdp->sd_master_dir->d_inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 847 | |
| 848 | if (sdp->sd_args.ar_spectator) |
| 849 | return 0; |
| 850 | |
| 851 | if (undo) |
| 852 | goto fail_qc_gh; |
| 853 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 854 | pn = gfs2_lookup_simple(master, "per_node"); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 855 | if (IS_ERR(pn)) { |
| 856 | error = PTR_ERR(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 857 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
| 858 | return error; |
| 859 | } |
| 860 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 861 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 862 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
| 863 | if (IS_ERR(sdp->sd_sc_inode)) { |
| 864 | error = PTR_ERR(sdp->sd_sc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 865 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 866 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 867 | } |
| 868 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 869 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
Steven Whitehouse | c752666 | 2006-03-20 12:30:04 -0500 | [diff] [blame] | 870 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
| 871 | if (IS_ERR(sdp->sd_qc_inode)) { |
| 872 | error = PTR_ERR(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 873 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
| 874 | goto fail_ut_i; |
| 875 | } |
| 876 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 877 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 878 | pn = NULL; |
| 879 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 880 | ip = GFS2_I(sdp->sd_sc_inode); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 881 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 882 | &sdp->sd_sc_gh); |
| 883 | if (error) { |
| 884 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 885 | goto fail_qc_i; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 886 | } |
| 887 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 888 | ip = GFS2_I(sdp->sd_qc_inode); |
Steven Whitehouse | 8d8291a | 2009-08-27 15:51:07 +0100 | [diff] [blame] | 889 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 890 | &sdp->sd_qc_gh); |
| 891 | if (error) { |
| 892 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); |
| 893 | goto fail_ut_gh; |
| 894 | } |
| 895 | |
| 896 | return 0; |
| 897 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 898 | fail_qc_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 899 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 900 | fail_ut_gh: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 901 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 902 | fail_qc_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 903 | iput(sdp->sd_qc_inode); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 904 | fail_ut_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 905 | iput(sdp->sd_sc_inode); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 906 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 907 | if (pn) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 908 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 909 | return error; |
| 910 | } |
| 911 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 912 | static const match_table_t nolock_tokens = { |
| 913 | { Opt_jid, "jid=%d\n", }, |
| 914 | { Opt_err, NULL }, |
| 915 | }; |
| 916 | |
| 917 | static const struct lm_lockops nolock_ops = { |
| 918 | .lm_proto_name = "lock_nolock", |
Steven Whitehouse | fc0e38d | 2011-03-09 10:58:04 +0000 | [diff] [blame] | 919 | .lm_put_lock = gfs2_glock_free, |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 920 | .lm_tokens = &nolock_tokens, |
| 921 | }; |
| 922 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 923 | /** |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 924 | * gfs2_lm_mount - mount a locking protocol |
| 925 | * @sdp: the filesystem |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 926 | * @args: mount arguments |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 927 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
| 928 | * |
| 929 | * Returns: errno |
| 930 | */ |
| 931 | |
| 932 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) |
| 933 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 934 | const struct lm_lockops *lm; |
| 935 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 936 | struct gfs2_args *args = &sdp->sd_args; |
| 937 | const char *proto = sdp->sd_proto_name; |
| 938 | const char *table = sdp->sd_table_name; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 939 | char *o, *options; |
| 940 | int ret; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 941 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 942 | if (!strcmp("lock_nolock", proto)) { |
| 943 | lm = &nolock_ops; |
| 944 | sdp->sd_args.ar_localflocks = 1; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 945 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
| 946 | } else if (!strcmp("lock_dlm", proto)) { |
| 947 | lm = &gfs2_dlm_ops; |
| 948 | #endif |
| 949 | } else { |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 950 | pr_info("can't find protocol %s\n", proto); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 951 | return -ENOENT; |
| 952 | } |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 953 | |
| 954 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); |
| 955 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 956 | ls->ls_ops = lm; |
| 957 | ls->ls_first = 1; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 958 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 959 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
| 960 | substring_t tmp[MAX_OPT_ARGS]; |
| 961 | int token, option; |
| 962 | |
| 963 | if (!o || !*o) |
| 964 | continue; |
| 965 | |
| 966 | token = match_token(o, *lm->lm_tokens, tmp); |
| 967 | switch (token) { |
| 968 | case Opt_jid: |
| 969 | ret = match_int(&tmp[0], &option); |
| 970 | if (ret || option < 0) |
| 971 | goto hostdata_error; |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 972 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
| 973 | ls->ls_jid = option; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 974 | break; |
| 975 | case Opt_id: |
David Teigland | 4875647 | 2012-04-26 15:54:29 -0500 | [diff] [blame] | 976 | case Opt_nodir: |
Steven Whitehouse | 2b88f7c | 2009-09-09 15:59:35 +0100 | [diff] [blame] | 977 | /* Obsolete, but left for backward compat purposes */ |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 978 | break; |
| 979 | case Opt_first: |
| 980 | ret = match_int(&tmp[0], &option); |
| 981 | if (ret || (option != 0 && option != 1)) |
| 982 | goto hostdata_error; |
| 983 | ls->ls_first = option; |
| 984 | break; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 985 | case Opt_err: |
| 986 | default: |
| 987 | hostdata_error: |
| 988 | fs_info(sdp, "unknown hostdata (%s)\n", o); |
| 989 | return -EINVAL; |
| 990 | } |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 991 | } |
| 992 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 993 | if (lm->lm_mount == NULL) { |
| 994 | fs_info(sdp, "Now mounting FS...\n"); |
Steven Whitehouse | 1923703 | 2011-07-26 09:15:45 +0100 | [diff] [blame] | 995 | complete_all(&sdp->sd_locking_init); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 996 | return 0; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 997 | } |
David Teigland | e0c2a9a | 2012-01-09 17:18:05 -0500 | [diff] [blame] | 998 | ret = lm->lm_mount(sdp, table); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 999 | if (ret == 0) |
| 1000 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); |
Steven Whitehouse | 1923703 | 2011-07-26 09:15:45 +0100 | [diff] [blame] | 1001 | complete_all(&sdp->sd_locking_init); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1002 | return ret; |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1003 | } |
| 1004 | |
| 1005 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) |
| 1006 | { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1007 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
| 1008 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) && |
| 1009 | lm->lm_unmount) |
| 1010 | lm->lm_unmount(sdp); |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1011 | } |
| 1012 | |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 1013 | static int gfs2_journalid_wait(void *word) |
| 1014 | { |
| 1015 | if (signal_pending(current)) |
| 1016 | return -EINTR; |
| 1017 | schedule(); |
| 1018 | return 0; |
| 1019 | } |
| 1020 | |
| 1021 | static int wait_on_journal(struct gfs2_sbd *sdp) |
| 1022 | { |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 1023 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
| 1024 | return 0; |
| 1025 | |
| 1026 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, gfs2_journalid_wait, TASK_INTERRUPTIBLE); |
| 1027 | } |
| 1028 | |
Steven Whitehouse | 8633ecf | 2009-07-31 11:07:29 +0100 | [diff] [blame] | 1029 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
| 1030 | { |
| 1031 | struct super_block *sb = sdp->sd_vfs; |
| 1032 | char ro[20]; |
| 1033 | char spectator[20]; |
| 1034 | char *envp[] = { ro, spectator, NULL }; |
| 1035 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); |
| 1036 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
| 1037 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); |
| 1038 | } |
| 1039 | |
Steven Whitehouse | da755fd | 2008-01-30 15:34:04 +0000 | [diff] [blame] | 1040 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1041 | * fill_super - Read in superblock |
| 1042 | * @sb: The VFS superblock |
| 1043 | * @data: Mount options |
| 1044 | * @silent: Don't complain if it's not a GFS2 filesystem |
| 1045 | * |
| 1046 | * Returns: errno |
| 1047 | */ |
| 1048 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1049 | static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1050 | { |
| 1051 | struct gfs2_sbd *sdp; |
| 1052 | struct gfs2_holder mount_gh; |
| 1053 | int error; |
| 1054 | |
| 1055 | sdp = init_sbd(sb); |
| 1056 | if (!sdp) { |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 1057 | pr_warn("can't alloc struct gfs2_sbd\n"); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1058 | return -ENOMEM; |
| 1059 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1060 | sdp->sd_args = *args; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1061 | |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 1062 | if (sdp->sd_args.ar_spectator) { |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1063 | sb->s_flags |= MS_RDONLY; |
David Teigland | e8ca5cc | 2012-01-09 14:40:06 -0500 | [diff] [blame] | 1064 | set_bit(SDF_RORECOVERY, &sdp->sd_flags); |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 1065 | } |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1066 | if (sdp->sd_args.ar_posix_acl) |
| 1067 | sb->s_flags |= MS_POSIXACL; |
Christoph Hellwig | f25934c | 2009-10-30 08:03:27 +0100 | [diff] [blame] | 1068 | if (sdp->sd_args.ar_nobarrier) |
| 1069 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
Steven Whitehouse | 6f04c1c | 2009-01-06 11:52:25 +0000 | [diff] [blame] | 1070 | |
Steven Whitehouse | 9964afb | 2011-06-16 14:06:55 +0100 | [diff] [blame] | 1071 | sb->s_flags |= MS_NOSEC; |
Steven Whitehouse | 719ee34 | 2008-09-18 13:53:59 +0100 | [diff] [blame] | 1072 | sb->s_magic = GFS2_MAGIC; |
| 1073 | sb->s_op = &gfs2_super_ops; |
Al Viro | 41ced6d | 2010-12-18 12:06:56 -0500 | [diff] [blame] | 1074 | sb->s_d_op = &gfs2_dops; |
Steven Whitehouse | 719ee34 | 2008-09-18 13:53:59 +0100 | [diff] [blame] | 1075 | sb->s_export_op = &gfs2_export_ops; |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1076 | sb->s_xattr = gfs2_xattr_handlers; |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 1077 | sb->s_qcop = &gfs2_quotactl_ops; |
| 1078 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
Steven Whitehouse | 719ee34 | 2008-09-18 13:53:59 +0100 | [diff] [blame] | 1079 | sb->s_time_gran = 1; |
| 1080 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1081 | |
| 1082 | /* Set up the buffer cache and fill in some fake block size values |
| 1083 | to allow us to read-in the on-disk superblock. */ |
| 1084 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); |
| 1085 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; |
| 1086 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
| 1087 | GFS2_BASIC_BLOCK_SHIFT; |
| 1088 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1089 | |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 1090 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1091 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
| 1092 | if (sdp->sd_args.ar_statfs_quantum) { |
| 1093 | sdp->sd_tune.gt_statfs_slow = 0; |
| 1094 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; |
Steven Whitehouse | 32e471e | 2011-05-10 15:01:59 +0100 | [diff] [blame] | 1095 | } else { |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1096 | sdp->sd_tune.gt_statfs_slow = 1; |
| 1097 | sdp->sd_tune.gt_statfs_quantum = 30; |
| 1098 | } |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 1099 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1100 | error = init_names(sdp, silent); |
Bob Peterson | 0d51521 | 2012-06-13 10:27:41 -0400 | [diff] [blame] | 1101 | if (error) { |
| 1102 | /* In this case, we haven't initialized sysfs, so we have to |
| 1103 | manually free the sdp. */ |
| 1104 | free_percpu(sdp->sd_lkstats); |
| 1105 | kfree(sdp); |
| 1106 | sb->s_fs_info = NULL; |
| 1107 | return error; |
| 1108 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1109 | |
David Teigland | e0c2a9a | 2012-01-09 17:18:05 -0500 | [diff] [blame] | 1110 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s", sdp->sd_table_name); |
| 1111 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1112 | error = gfs2_sys_fs_add(sdp); |
Bob Peterson | 0d51521 | 2012-06-13 10:27:41 -0400 | [diff] [blame] | 1113 | /* |
| 1114 | * If we hit an error here, gfs2_sys_fs_add will have called function |
| 1115 | * kobject_put which causes the sysfs usage count to go to zero, which |
| 1116 | * causes sysfs to call function gfs2_sbd_release, which frees sdp. |
| 1117 | * Subsequent error paths here will call gfs2_sys_fs_del, which also |
| 1118 | * kobject_put to free sdp. |
| 1119 | */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1120 | if (error) |
Bob Peterson | 0d51521 | 2012-06-13 10:27:41 -0400 | [diff] [blame] | 1121 | return error; |
| 1122 | |
| 1123 | gfs2_create_debugfs_file(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1124 | |
| 1125 | error = gfs2_lm_mount(sdp, silent); |
| 1126 | if (error) |
Bob Peterson | 0d51521 | 2012-06-13 10:27:41 -0400 | [diff] [blame] | 1127 | goto fail_debug; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1128 | |
| 1129 | error = init_locking(sdp, &mount_gh, DO); |
| 1130 | if (error) |
| 1131 | goto fail_lm; |
| 1132 | |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1133 | error = init_sb(sdp, silent); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1134 | if (error) |
| 1135 | goto fail_locking; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1136 | |
Steven Whitehouse | ba6e936 | 2010-06-14 10:01:30 +0100 | [diff] [blame] | 1137 | error = wait_on_journal(sdp); |
| 1138 | if (error) |
| 1139 | goto fail_sb; |
| 1140 | |
Steven Whitehouse | feb47ca9 | 2010-09-29 15:04:18 +0100 | [diff] [blame] | 1141 | /* |
| 1142 | * If user space has failed to join the cluster or some similar |
| 1143 | * failure has occurred, then the journal id will contain a |
| 1144 | * negative (error) number. This will then be returned to the |
| 1145 | * caller (of the mount syscall). We do this even for spectator |
| 1146 | * mounts (which just write a jid of 0 to indicate "ok" even though |
| 1147 | * the jid is unused in the spectator case) |
| 1148 | */ |
| 1149 | if (sdp->sd_lockstruct.ls_jid < 0) { |
| 1150 | error = sdp->sd_lockstruct.ls_jid; |
| 1151 | sdp->sd_lockstruct.ls_jid = 0; |
| 1152 | goto fail_sb; |
| 1153 | } |
| 1154 | |
David Teigland | e0c2a9a | 2012-01-09 17:18:05 -0500 | [diff] [blame] | 1155 | if (sdp->sd_args.ar_spectator) |
| 1156 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", |
| 1157 | sdp->sd_table_name); |
| 1158 | else |
| 1159 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", |
| 1160 | sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); |
| 1161 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1162 | error = init_inodes(sdp, DO); |
| 1163 | if (error) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 1164 | goto fail_sb; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1165 | |
| 1166 | error = init_per_node(sdp, DO); |
| 1167 | if (error) |
| 1168 | goto fail_inodes; |
| 1169 | |
| 1170 | error = gfs2_statfs_init(sdp); |
| 1171 | if (error) { |
| 1172 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); |
| 1173 | goto fail_per_node; |
| 1174 | } |
| 1175 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1176 | if (!(sb->s_flags & MS_RDONLY)) { |
| 1177 | error = gfs2_make_fs_rw(sdp); |
| 1178 | if (error) { |
| 1179 | fs_err(sdp, "can't make FS RW: %d\n", error); |
Steven Whitehouse | 8ad151c | 2013-12-12 11:34:09 +0000 | [diff] [blame] | 1180 | goto fail_per_node; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | gfs2_glock_dq_uninit(&mount_gh); |
Steven Whitehouse | 8633ecf | 2009-07-31 11:07:29 +0100 | [diff] [blame] | 1185 | gfs2_online_uevent(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1186 | return 0; |
| 1187 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1188 | fail_per_node: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1189 | init_per_node(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1190 | fail_inodes: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1191 | init_inodes(sdp, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1192 | fail_sb: |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1193 | if (sdp->sd_root_dir) |
| 1194 | dput(sdp->sd_root_dir); |
| 1195 | if (sdp->sd_master_dir) |
| 1196 | dput(sdp->sd_master_dir); |
Steven Whitehouse | e7c8707 | 2009-01-20 16:39:23 +0000 | [diff] [blame] | 1197 | if (sb->s_root) |
| 1198 | dput(sb->s_root); |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1199 | sb->s_root = NULL; |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1200 | fail_locking: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1201 | init_locking(sdp, &mount_gh, UNDO); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1202 | fail_lm: |
Steven Whitehouse | fefc03b | 2008-12-19 15:32:06 +0000 | [diff] [blame] | 1203 | gfs2_gl_hash_clear(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1204 | gfs2_lm_unmount(sdp); |
Bob Peterson | 0d51521 | 2012-06-13 10:27:41 -0400 | [diff] [blame] | 1205 | fail_debug: |
Robert Peterson | 5f88209 | 2007-04-18 11:41:11 -0500 | [diff] [blame] | 1206 | gfs2_delete_debugfs_file(sdp); |
Steven Whitehouse | a245769 | 2012-01-20 10:38:36 +0000 | [diff] [blame] | 1207 | free_percpu(sdp->sd_lkstats); |
Bob Peterson | 0d51521 | 2012-06-13 10:27:41 -0400 | [diff] [blame] | 1208 | /* gfs2_sys_fs_del must be the last thing we do, since it causes |
| 1209 | * sysfs to call function gfs2_sbd_release, which frees sdp. */ |
| 1210 | gfs2_sys_fs_del(sdp); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 1211 | sb->s_fs_info = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1212 | return error; |
| 1213 | } |
| 1214 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1215 | static int set_gfs2_super(struct super_block *s, void *data) |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1216 | { |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1217 | s->s_bdev = data; |
| 1218 | s->s_dev = s->s_bdev->bd_dev; |
| 1219 | |
| 1220 | /* |
| 1221 | * We set the bdi here to the queue backing, file systems can |
| 1222 | * overwrite this in ->fill_super() |
| 1223 | */ |
| 1224 | s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info; |
| 1225 | return 0; |
Steven Whitehouse | 9b8df98 | 2008-08-08 13:45:13 +0100 | [diff] [blame] | 1226 | } |
| 1227 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1228 | static int test_gfs2_super(struct super_block *s, void *ptr) |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1229 | { |
| 1230 | struct block_device *bdev = ptr; |
| 1231 | return (bdev == s->s_bdev); |
| 1232 | } |
| 1233 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1234 | /** |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1235 | * gfs2_mount - Get the GFS2 superblock |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1236 | * @fs_type: The GFS2 filesystem type |
| 1237 | * @flags: Mount flags |
| 1238 | * @dev_name: The name of the device |
| 1239 | * @data: The mount arguments |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1240 | * |
| 1241 | * Q. Why not use get_sb_bdev() ? |
| 1242 | * A. We need to select one of two root directories to mount, independent |
| 1243 | * of whether this is the initial, or subsequent, mount of this sb |
| 1244 | * |
| 1245 | * Returns: 0 or -ve on error |
| 1246 | */ |
| 1247 | |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1248 | static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags, |
| 1249 | const char *dev_name, void *data) |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1250 | { |
| 1251 | struct block_device *bdev; |
| 1252 | struct super_block *s; |
Tejun Heo | d4d7762 | 2010-11-13 11:55:18 +0100 | [diff] [blame] | 1253 | fmode_t mode = FMODE_READ | FMODE_EXCL; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1254 | int error; |
| 1255 | struct gfs2_args args; |
| 1256 | struct gfs2_sbd *sdp; |
| 1257 | |
| 1258 | if (!(flags & MS_RDONLY)) |
| 1259 | mode |= FMODE_WRITE; |
| 1260 | |
Tejun Heo | d4d7762 | 2010-11-13 11:55:18 +0100 | [diff] [blame] | 1261 | bdev = blkdev_get_by_path(dev_name, mode, fs_type); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1262 | if (IS_ERR(bdev)) |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1263 | return ERR_CAST(bdev); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1264 | |
| 1265 | /* |
| 1266 | * once the super is inserted into the list by sget, s_umount |
| 1267 | * will protect the lockfs code from trying to start a snapshot |
| 1268 | * while we are mounting |
| 1269 | */ |
| 1270 | mutex_lock(&bdev->bd_fsfreeze_mutex); |
| 1271 | if (bdev->bd_fsfreeze_count > 0) { |
| 1272 | mutex_unlock(&bdev->bd_fsfreeze_mutex); |
| 1273 | error = -EBUSY; |
| 1274 | goto error_bdev; |
| 1275 | } |
David Howells | 9249e17 | 2012-06-25 12:55:37 +0100 | [diff] [blame] | 1276 | s = sget(fs_type, test_gfs2_super, set_gfs2_super, flags, bdev); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1277 | mutex_unlock(&bdev->bd_fsfreeze_mutex); |
| 1278 | error = PTR_ERR(s); |
| 1279 | if (IS_ERR(s)) |
| 1280 | goto error_bdev; |
| 1281 | |
Steven Whitehouse | dfe5b9a | 2013-12-06 11:52:34 +0000 | [diff] [blame] | 1282 | if (s->s_root) { |
| 1283 | /* |
| 1284 | * s_umount nests inside bd_mutex during |
| 1285 | * __invalidate_device(). blkdev_put() acquires |
| 1286 | * bd_mutex and can't be called under s_umount. Drop |
| 1287 | * s_umount temporarily. This is safe as we're |
| 1288 | * holding an active reference. |
| 1289 | */ |
| 1290 | up_write(&s->s_umount); |
Tejun Heo | d4d7762 | 2010-11-13 11:55:18 +0100 | [diff] [blame] | 1291 | blkdev_put(bdev, mode); |
Steven Whitehouse | dfe5b9a | 2013-12-06 11:52:34 +0000 | [diff] [blame] | 1292 | down_write(&s->s_umount); |
| 1293 | } |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1294 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1295 | memset(&args, 0, sizeof(args)); |
| 1296 | args.ar_quota = GFS2_QUOTA_DEFAULT; |
| 1297 | args.ar_data = GFS2_DATA_DEFAULT; |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 1298 | args.ar_commit = 30; |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1299 | args.ar_statfs_quantum = 30; |
| 1300 | args.ar_quota_quantum = 60; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1301 | args.ar_errors = GFS2_ERRORS_DEFAULT; |
| 1302 | |
| 1303 | error = gfs2_mount_args(&args, data); |
| 1304 | if (error) { |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 1305 | pr_warn("can't parse mount arguments\n"); |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1306 | goto error_super; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1307 | } |
| 1308 | |
| 1309 | if (s->s_root) { |
| 1310 | error = -EBUSY; |
| 1311 | if ((flags ^ s->s_flags) & MS_RDONLY) |
| 1312 | goto error_super; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1313 | } else { |
| 1314 | char b[BDEVNAME_SIZE]; |
| 1315 | |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1316 | s->s_mode = mode; |
| 1317 | strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id)); |
| 1318 | sb_set_blocksize(s, block_size(bdev)); |
| 1319 | error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0); |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1320 | if (error) |
| 1321 | goto error_super; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1322 | s->s_flags |= MS_ACTIVE; |
| 1323 | bdev->bd_super = s; |
| 1324 | } |
| 1325 | |
| 1326 | sdp = s->s_fs_info; |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1327 | if (args.ar_meta) |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1328 | return dget(sdp->sd_master_dir); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1329 | else |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1330 | return dget(sdp->sd_root_dir); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1331 | |
| 1332 | error_super: |
| 1333 | deactivate_locked_super(s); |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1334 | return ERR_PTR(error); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1335 | error_bdev: |
Tejun Heo | d4d7762 | 2010-11-13 11:55:18 +0100 | [diff] [blame] | 1336 | blkdev_put(bdev, mode); |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1337 | return ERR_PTR(error); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1338 | } |
| 1339 | |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1340 | static int set_meta_super(struct super_block *s, void *ptr) |
| 1341 | { |
| 1342 | return -EINVAL; |
| 1343 | } |
| 1344 | |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1345 | static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type, |
| 1346 | int flags, const char *dev_name, void *data) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1347 | { |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1348 | struct super_block *s; |
Steven Whitehouse | 003dec8 | 2009-06-10 10:31:45 +0100 | [diff] [blame] | 1349 | struct gfs2_sbd *sdp; |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1350 | struct path path; |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1351 | int error; |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 1352 | |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1353 | error = kern_path(dev_name, LOOKUP_FOLLOW, &path); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1354 | if (error) { |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 1355 | pr_warn("path_lookup on %s returned error %d\n", |
| 1356 | dev_name, error); |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1357 | return ERR_PTR(error); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1358 | } |
David Howells | 9249e17 | 2012-06-25 12:55:37 +0100 | [diff] [blame] | 1359 | s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, flags, |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1360 | path.dentry->d_inode->i_sb->s_bdev); |
Al Viro | e24977d | 2009-04-02 21:17:03 -0400 | [diff] [blame] | 1361 | path_put(&path); |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1362 | if (IS_ERR(s)) { |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame^] | 1363 | pr_warn("gfs2 mount does not exist\n"); |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1364 | return ERR_CAST(s); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1365 | } |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1366 | if ((flags ^ s->s_flags) & MS_RDONLY) { |
| 1367 | deactivate_locked_super(s); |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1368 | return ERR_PTR(-EBUSY); |
Steven Whitehouse | f55073f | 2009-09-28 10:30:49 +0100 | [diff] [blame] | 1369 | } |
Steven Whitehouse | f6d0313 | 2009-06-05 07:18:57 +0100 | [diff] [blame] | 1370 | sdp = s->s_fs_info; |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1371 | return dget(sdp->sd_master_dir); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1372 | } |
| 1373 | |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1374 | static void gfs2_kill_sb(struct super_block *sb) |
| 1375 | { |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1376 | struct gfs2_sbd *sdp = sb->s_fs_info; |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1377 | |
| 1378 | if (sdp == NULL) { |
| 1379 | kill_block_super(sb); |
| 1380 | return; |
Abhijith Das | acd2c8a | 2008-09-15 08:54:06 -0500 | [diff] [blame] | 1381 | } |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1382 | |
| 1383 | gfs2_meta_syncfs(sdp); |
| 1384 | dput(sdp->sd_root_dir); |
| 1385 | dput(sdp->sd_master_dir); |
| 1386 | sdp->sd_root_dir = NULL; |
| 1387 | sdp->sd_master_dir = NULL; |
Steven Whitehouse | fefc03b | 2008-12-19 15:32:06 +0000 | [diff] [blame] | 1388 | shrink_dcache_sb(sb); |
Steven Whitehouse | 88a19ad | 2008-12-19 15:43:05 +0000 | [diff] [blame] | 1389 | gfs2_delete_debugfs_file(sdp); |
Steven Whitehouse | a245769 | 2012-01-20 10:38:36 +0000 | [diff] [blame] | 1390 | free_percpu(sdp->sd_lkstats); |
Bob Peterson | 0d51521 | 2012-06-13 10:27:41 -0400 | [diff] [blame] | 1391 | kill_block_super(sb); |
Abhijith Das | 8638460 | 2006-08-25 11:13:37 -0500 | [diff] [blame] | 1392 | } |
| 1393 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1394 | struct file_system_type gfs2_fs_type = { |
| 1395 | .name = "gfs2", |
| 1396 | .fs_flags = FS_REQUIRES_DEV, |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1397 | .mount = gfs2_mount, |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1398 | .kill_sb = gfs2_kill_sb, |
| 1399 | .owner = THIS_MODULE, |
| 1400 | }; |
Eric W. Biederman | 7f78e03 | 2013-03-02 19:39:14 -0800 | [diff] [blame] | 1401 | MODULE_ALIAS_FS("gfs2"); |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 1402 | |
| 1403 | struct file_system_type gfs2meta_fs_type = { |
| 1404 | .name = "gfs2meta", |
| 1405 | .fs_flags = FS_REQUIRES_DEV, |
Al Viro | 8bcbbf0 | 2010-07-26 16:03:58 +0400 | [diff] [blame] | 1406 | .mount = gfs2_mount_meta, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1407 | .owner = THIS_MODULE, |
| 1408 | }; |
Eric W. Biederman | 7f78e03 | 2013-03-02 19:39:14 -0800 | [diff] [blame] | 1409 | MODULE_ALIAS_FS("gfs2meta"); |