David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| 3 | * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. |
| 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
| 7 | * of the GNU General Public License v.2. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/spinlock.h> |
| 13 | #include <linux/completion.h> |
| 14 | #include <linux/buffer_head.h> |
| 15 | #include <linux/vmalloc.h> |
| 16 | #include <linux/blkdev.h> |
| 17 | #include <linux/kthread.h> |
| 18 | #include <asm/semaphore.h> |
| 19 | |
| 20 | #include "gfs2.h" |
| 21 | #include "daemon.h" |
| 22 | #include "glock.h" |
| 23 | #include "glops.h" |
| 24 | #include "inode.h" |
| 25 | #include "lm.h" |
| 26 | #include "mount.h" |
| 27 | #include "ops_export.h" |
| 28 | #include "ops_fstype.h" |
| 29 | #include "ops_super.h" |
| 30 | #include "recovery.h" |
| 31 | #include "rgrp.h" |
| 32 | #include "super.h" |
| 33 | #include "unlinked.h" |
| 34 | #include "sys.h" |
| 35 | |
| 36 | #define DO 0 |
| 37 | #define UNDO 1 |
| 38 | |
| 39 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
| 40 | { |
| 41 | struct gfs2_sbd *sdp; |
| 42 | unsigned int x; |
| 43 | |
| 44 | sdp = vmalloc(sizeof(struct gfs2_sbd)); |
| 45 | if (!sdp) |
| 46 | return NULL; |
| 47 | |
| 48 | memset(sdp, 0, sizeof(struct gfs2_sbd)); |
| 49 | |
| 50 | set_v2sdp(sb, sdp); |
| 51 | sdp->sd_vfs = sb; |
| 52 | |
| 53 | gfs2_tune_init(&sdp->sd_tune); |
| 54 | |
| 55 | for (x = 0; x < GFS2_GL_HASH_SIZE; x++) { |
| 56 | sdp->sd_gl_hash[x].hb_lock = RW_LOCK_UNLOCKED; |
| 57 | INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list); |
| 58 | } |
| 59 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); |
| 60 | spin_lock_init(&sdp->sd_reclaim_lock); |
| 61 | init_waitqueue_head(&sdp->sd_reclaim_wq); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 62 | mutex_init(&sdp->sd_invalidate_inodes_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 63 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 64 | mutex_init(&sdp->sd_inum_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 65 | spin_lock_init(&sdp->sd_statfs_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 66 | mutex_init(&sdp->sd_statfs_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 67 | |
| 68 | spin_lock_init(&sdp->sd_rindex_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 69 | mutex_init(&sdp->sd_rindex_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 70 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
| 71 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); |
| 72 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); |
| 73 | |
| 74 | INIT_LIST_HEAD(&sdp->sd_jindex_list); |
| 75 | spin_lock_init(&sdp->sd_jindex_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 76 | mutex_init(&sdp->sd_jindex_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 77 | |
| 78 | INIT_LIST_HEAD(&sdp->sd_unlinked_list); |
| 79 | spin_lock_init(&sdp->sd_unlinked_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 80 | mutex_init(&sdp->sd_unlinked_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 81 | |
| 82 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
| 83 | spin_lock_init(&sdp->sd_quota_spin); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 84 | mutex_init(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 85 | |
| 86 | spin_lock_init(&sdp->sd_log_lock); |
| 87 | init_waitqueue_head(&sdp->sd_log_trans_wq); |
| 88 | init_waitqueue_head(&sdp->sd_log_flush_wq); |
| 89 | |
| 90 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); |
| 91 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
| 92 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); |
| 93 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); |
| 94 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); |
| 95 | |
| 96 | INIT_LIST_HEAD(&sdp->sd_log_blks_list); |
| 97 | init_waitqueue_head(&sdp->sd_log_blks_wait); |
| 98 | |
| 99 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
| 100 | INIT_LIST_HEAD(&sdp->sd_ail2_list); |
| 101 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 102 | mutex_init(&sdp->sd_log_flush_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 103 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
| 104 | |
| 105 | INIT_LIST_HEAD(&sdp->sd_revoke_list); |
| 106 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 107 | mutex_init(&sdp->sd_freeze_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 108 | |
| 109 | return sdp; |
| 110 | } |
| 111 | |
| 112 | static void init_vfs(struct gfs2_sbd *sdp) |
| 113 | { |
| 114 | struct super_block *sb = sdp->sd_vfs; |
| 115 | |
| 116 | sb->s_magic = GFS2_MAGIC; |
| 117 | sb->s_op = &gfs2_super_ops; |
| 118 | sb->s_export_op = &gfs2_export_ops; |
| 119 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
| 120 | |
| 121 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) |
| 122 | set_bit(SDF_NOATIME, &sdp->sd_flags); |
| 123 | |
| 124 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ |
| 125 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; |
| 126 | |
| 127 | /* Set up the buffer cache and fill in some fake block size values |
| 128 | to allow us to read-in the on-disk superblock. */ |
| 129 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); |
| 130 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; |
| 131 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT; |
| 132 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
| 133 | } |
| 134 | |
| 135 | static int init_names(struct gfs2_sbd *sdp, int silent) |
| 136 | { |
| 137 | struct gfs2_sb *sb = NULL; |
| 138 | char *proto, *table; |
| 139 | int error = 0; |
| 140 | |
| 141 | proto = sdp->sd_args.ar_lockproto; |
| 142 | table = sdp->sd_args.ar_locktable; |
| 143 | |
| 144 | /* Try to autodetect */ |
| 145 | |
| 146 | if (!proto[0] || !table[0]) { |
| 147 | struct buffer_head *bh; |
| 148 | bh = sb_getblk(sdp->sd_vfs, |
| 149 | GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
| 150 | lock_buffer(bh); |
| 151 | clear_buffer_uptodate(bh); |
| 152 | clear_buffer_dirty(bh); |
| 153 | unlock_buffer(bh); |
| 154 | ll_rw_block(READ, 1, &bh); |
| 155 | wait_on_buffer(bh); |
| 156 | |
| 157 | if (!buffer_uptodate(bh)) { |
| 158 | brelse(bh); |
| 159 | return -EIO; |
| 160 | } |
| 161 | |
| 162 | sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL); |
| 163 | if (!sb) { |
| 164 | brelse(bh); |
| 165 | return -ENOMEM; |
| 166 | } |
| 167 | gfs2_sb_in(sb, bh->b_data); |
| 168 | brelse(bh); |
| 169 | |
| 170 | error = gfs2_check_sb(sdp, sb, silent); |
| 171 | if (error) |
| 172 | goto out; |
| 173 | |
| 174 | if (!proto[0]) |
| 175 | proto = sb->sb_lockproto; |
| 176 | if (!table[0]) |
| 177 | table = sb->sb_locktable; |
| 178 | } |
| 179 | |
| 180 | if (!table[0]) |
| 181 | table = sdp->sd_vfs->s_id; |
| 182 | |
| 183 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); |
| 184 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); |
| 185 | |
| 186 | out: |
| 187 | kfree(sb); |
| 188 | |
| 189 | return error; |
| 190 | } |
| 191 | |
| 192 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, |
| 193 | int undo) |
| 194 | { |
| 195 | struct task_struct *p; |
| 196 | int error = 0; |
| 197 | |
| 198 | if (undo) |
| 199 | goto fail_trans; |
| 200 | |
| 201 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); |
| 202 | error = IS_ERR(p); |
| 203 | if (error) { |
| 204 | fs_err(sdp, "can't start scand thread: %d\n", error); |
| 205 | return error; |
| 206 | } |
| 207 | sdp->sd_scand_process = p; |
| 208 | |
| 209 | for (sdp->sd_glockd_num = 0; |
| 210 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; |
| 211 | sdp->sd_glockd_num++) { |
| 212 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); |
| 213 | error = IS_ERR(p); |
| 214 | if (error) { |
| 215 | fs_err(sdp, "can't start glockd thread: %d\n", error); |
| 216 | goto fail; |
| 217 | } |
| 218 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; |
| 219 | } |
| 220 | |
| 221 | error = gfs2_glock_nq_num(sdp, |
| 222 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, |
| 223 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, |
| 224 | mount_gh); |
| 225 | if (error) { |
| 226 | fs_err(sdp, "can't acquire mount glock: %d\n", error); |
| 227 | goto fail; |
| 228 | } |
| 229 | |
| 230 | error = gfs2_glock_nq_num(sdp, |
| 231 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, |
| 232 | LM_ST_SHARED, |
| 233 | LM_FLAG_NOEXP | GL_EXACT | GL_NEVER_RECURSE, |
| 234 | &sdp->sd_live_gh); |
| 235 | if (error) { |
| 236 | fs_err(sdp, "can't acquire live glock: %d\n", error); |
| 237 | goto fail_mount; |
| 238 | } |
| 239 | |
| 240 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, |
| 241 | CREATE, &sdp->sd_rename_gl); |
| 242 | if (error) { |
| 243 | fs_err(sdp, "can't create rename glock: %d\n", error); |
| 244 | goto fail_live; |
| 245 | } |
| 246 | |
| 247 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, |
| 248 | CREATE, &sdp->sd_trans_gl); |
| 249 | if (error) { |
| 250 | fs_err(sdp, "can't create transaction glock: %d\n", error); |
| 251 | goto fail_rename; |
| 252 | } |
| 253 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); |
| 254 | |
| 255 | return 0; |
| 256 | |
| 257 | fail_trans: |
| 258 | gfs2_glock_put(sdp->sd_trans_gl); |
| 259 | |
| 260 | fail_rename: |
| 261 | gfs2_glock_put(sdp->sd_rename_gl); |
| 262 | |
| 263 | fail_live: |
| 264 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
| 265 | |
| 266 | fail_mount: |
| 267 | gfs2_glock_dq_uninit(mount_gh); |
| 268 | |
| 269 | fail: |
| 270 | while (sdp->sd_glockd_num--) |
| 271 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); |
| 272 | |
| 273 | kthread_stop(sdp->sd_scand_process); |
| 274 | |
| 275 | return error; |
| 276 | } |
| 277 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 278 | int gfs2_lookup_root(struct gfs2_sbd *sdp) |
| 279 | { |
| 280 | int error; |
| 281 | struct gfs2_glock *gl; |
| 282 | struct gfs2_inode *ip; |
| 283 | |
| 284 | error = gfs2_glock_get(sdp, sdp->sd_sb.sb_root_dir.no_addr, |
| 285 | &gfs2_inode_glops, CREATE, &gl); |
| 286 | if (!error) { |
| 287 | error = gfs2_inode_get(gl, &sdp->sd_sb.sb_root_dir, |
| 288 | CREATE, &ip); |
| 289 | if (!error) { |
| 290 | if (!error) |
| 291 | gfs2_inode_min_init(ip, DT_DIR); |
| 292 | sdp->sd_root_dir = gfs2_ip2v(ip); |
| 293 | gfs2_inode_put(ip); |
| 294 | } |
| 295 | gfs2_glock_put(gl); |
| 296 | } |
| 297 | |
| 298 | return error; |
| 299 | } |
| 300 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 301 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
| 302 | { |
| 303 | struct super_block *sb = sdp->sd_vfs; |
| 304 | struct gfs2_holder sb_gh; |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 305 | struct inode *inode; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 306 | int error = 0; |
| 307 | |
| 308 | if (undo) { |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 309 | iput(sdp->sd_master_dir); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | error = gfs2_glock_nq_num(sdp, |
| 314 | GFS2_SB_LOCK, &gfs2_meta_glops, |
| 315 | LM_ST_SHARED, 0, &sb_gh); |
| 316 | if (error) { |
| 317 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); |
| 318 | return error; |
| 319 | } |
| 320 | |
| 321 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); |
| 322 | if (error) { |
| 323 | fs_err(sdp, "can't read superblock: %d\n", error); |
| 324 | goto out; |
| 325 | } |
| 326 | |
| 327 | /* Set up the buffer cache and SB for real */ |
| 328 | error = -EINVAL; |
| 329 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
| 330 | fs_err(sdp, "FS block size (%u) is too small for device " |
| 331 | "block size (%u)\n", |
| 332 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); |
| 333 | goto out; |
| 334 | } |
| 335 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { |
| 336 | fs_err(sdp, "FS block size (%u) is too big for machine " |
| 337 | "page size (%u)\n", |
| 338 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); |
| 339 | goto out; |
| 340 | } |
| 341 | |
| 342 | /* Get rid of buffers from the original block size */ |
| 343 | sb_gh.gh_gl->gl_ops->go_inval(sb_gh.gh_gl, DIO_METADATA | DIO_DATA); |
| 344 | sb_gh.gh_gl->gl_aspace->i_blkbits = sdp->sd_sb.sb_bsize_shift; |
| 345 | |
| 346 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
| 347 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 348 | /* Get the root inode */ |
| 349 | error = gfs2_lookup_root(sdp); |
| 350 | if (error) { |
| 351 | fs_err(sdp, "can't read in root inode: %d\n", error); |
| 352 | goto out; |
| 353 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 354 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 355 | /* Get the root inode/dentry */ |
| 356 | inode = sdp->sd_root_dir; |
| 357 | if (!inode) { |
| 358 | fs_err(sdp, "can't get root inode\n"); |
| 359 | error = -ENOMEM; |
| 360 | goto out_rooti; |
| 361 | } |
| 362 | |
Steven Whitehouse | 7359a19 | 2006-02-13 12:27:43 +0000 | [diff] [blame] | 363 | igrab(inode); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 364 | sb->s_root = d_alloc_root(inode); |
| 365 | if (!sb->s_root) { |
| 366 | fs_err(sdp, "can't get root dentry\n"); |
| 367 | error = -ENOMEM; |
| 368 | goto out_rooti; |
| 369 | } |
| 370 | |
| 371 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 372 | gfs2_glock_dq_uninit(&sb_gh); |
| 373 | |
| 374 | return error; |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 375 | out_rooti: |
| 376 | iput(sdp->sd_root_dir); |
| 377 | goto out; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
| 381 | { |
| 382 | struct gfs2_holder ji_gh; |
| 383 | struct task_struct *p; |
| 384 | int jindex = 1; |
| 385 | int error = 0; |
| 386 | |
| 387 | if (undo) { |
| 388 | jindex = 0; |
| 389 | goto fail_recoverd; |
| 390 | } |
| 391 | |
| 392 | error = gfs2_lookup_simple(sdp->sd_master_dir, "jindex", |
| 393 | &sdp->sd_jindex); |
| 394 | if (error) { |
| 395 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
| 396 | return error; |
| 397 | } |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 398 | set_bit(GLF_STICKY, &get_v2ip(sdp->sd_jindex)->i_gl->gl_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 399 | |
| 400 | /* Load in the journal index special file */ |
| 401 | |
| 402 | error = gfs2_jindex_hold(sdp, &ji_gh); |
| 403 | if (error) { |
| 404 | fs_err(sdp, "can't read journal index: %d\n", error); |
| 405 | goto fail; |
| 406 | } |
| 407 | |
| 408 | error = -EINVAL; |
| 409 | if (!gfs2_jindex_size(sdp)) { |
| 410 | fs_err(sdp, "no journals!\n"); |
| 411 | goto fail_jindex; |
| 412 | } |
| 413 | |
| 414 | if (sdp->sd_args.ar_spectator) { |
| 415 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); |
| 416 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; |
| 417 | } else { |
| 418 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { |
| 419 | fs_err(sdp, "can't mount journal #%u\n", |
| 420 | sdp->sd_lockstruct.ls_jid); |
| 421 | fs_err(sdp, "there are only %u journals (0 - %u)\n", |
| 422 | gfs2_jindex_size(sdp), |
| 423 | gfs2_jindex_size(sdp) - 1); |
| 424 | goto fail_jindex; |
| 425 | } |
| 426 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); |
| 427 | |
| 428 | error = gfs2_glock_nq_num(sdp, |
| 429 | sdp->sd_lockstruct.ls_jid, |
| 430 | &gfs2_journal_glops, |
| 431 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, |
| 432 | &sdp->sd_journal_gh); |
| 433 | if (error) { |
| 434 | fs_err(sdp, "can't acquire journal glock: %d\n", error); |
| 435 | goto fail_jindex; |
| 436 | } |
| 437 | |
Steven Whitehouse | 7359a19 | 2006-02-13 12:27:43 +0000 | [diff] [blame] | 438 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_jdesc->jd_inode)->i_gl, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 439 | LM_ST_SHARED, |
| 440 | LM_FLAG_NOEXP | GL_EXACT, |
| 441 | &sdp->sd_jinode_gh); |
| 442 | if (error) { |
| 443 | fs_err(sdp, "can't acquire journal inode glock: %d\n", |
| 444 | error); |
| 445 | goto fail_journal_gh; |
| 446 | } |
| 447 | |
| 448 | error = gfs2_jdesc_check(sdp->sd_jdesc); |
| 449 | if (error) { |
| 450 | fs_err(sdp, "my journal (%u) is bad: %d\n", |
| 451 | sdp->sd_jdesc->jd_jid, error); |
| 452 | goto fail_jinode_gh; |
| 453 | } |
| 454 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; |
| 455 | } |
| 456 | |
| 457 | if (sdp->sd_lockstruct.ls_first) { |
| 458 | unsigned int x; |
| 459 | for (x = 0; x < sdp->sd_journals; x++) { |
| 460 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), |
| 461 | WAIT); |
| 462 | if (error) { |
| 463 | fs_err(sdp, "error recovering journal %u: %d\n", |
| 464 | x, error); |
| 465 | goto fail_jinode_gh; |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | gfs2_lm_others_may_mount(sdp); |
| 470 | } else if (!sdp->sd_args.ar_spectator) { |
| 471 | error = gfs2_recover_journal(sdp->sd_jdesc, WAIT); |
| 472 | if (error) { |
| 473 | fs_err(sdp, "error recovering my journal: %d\n", error); |
| 474 | goto fail_jinode_gh; |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
| 479 | gfs2_glock_dq_uninit(&ji_gh); |
| 480 | jindex = 0; |
| 481 | |
| 482 | /* Disown my Journal glock */ |
| 483 | |
| 484 | sdp->sd_journal_gh.gh_owner = NULL; |
| 485 | sdp->sd_jinode_gh.gh_owner = NULL; |
| 486 | |
| 487 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
| 488 | error = IS_ERR(p); |
| 489 | if (error) { |
| 490 | fs_err(sdp, "can't start recoverd thread: %d\n", error); |
| 491 | goto fail_jinode_gh; |
| 492 | } |
| 493 | sdp->sd_recoverd_process = p; |
| 494 | |
| 495 | return 0; |
| 496 | |
| 497 | fail_recoverd: |
| 498 | kthread_stop(sdp->sd_recoverd_process); |
| 499 | |
| 500 | fail_jinode_gh: |
| 501 | if (!sdp->sd_args.ar_spectator) |
| 502 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); |
| 503 | |
| 504 | fail_journal_gh: |
| 505 | if (!sdp->sd_args.ar_spectator) |
| 506 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
| 507 | |
| 508 | fail_jindex: |
| 509 | gfs2_jindex_free(sdp); |
| 510 | if (jindex) |
| 511 | gfs2_glock_dq_uninit(&ji_gh); |
| 512 | |
| 513 | fail: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 514 | iput(sdp->sd_jindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 515 | |
| 516 | return error; |
| 517 | } |
| 518 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 519 | |
| 520 | static int init_inodes(struct gfs2_sbd *sdp, int undo) |
| 521 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 522 | int error = 0; |
| 523 | |
| 524 | if (undo) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 525 | goto fail_qinode; |
| 526 | |
| 527 | error = gfs2_lookup_master_dir(sdp); |
| 528 | if (error) { |
| 529 | fs_err(sdp, "can't read in master directory: %d\n", error); |
| 530 | goto fail; |
| 531 | } |
| 532 | |
| 533 | error = init_journal(sdp, undo); |
| 534 | if (error) |
| 535 | goto fail_master; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 536 | |
| 537 | /* Read in the master inode number inode */ |
| 538 | error = gfs2_lookup_simple(sdp->sd_master_dir, "inum", |
| 539 | &sdp->sd_inum_inode); |
| 540 | if (error) { |
| 541 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 542 | goto fail_journal; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 543 | } |
| 544 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 545 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 546 | /* Read in the master statfs inode */ |
| 547 | error = gfs2_lookup_simple(sdp->sd_master_dir, "statfs", |
| 548 | &sdp->sd_statfs_inode); |
| 549 | if (error) { |
| 550 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 551 | goto fail_inum; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | /* Read in the resource index inode */ |
| 555 | error = gfs2_lookup_simple(sdp->sd_master_dir, "rindex", |
| 556 | &sdp->sd_rindex); |
| 557 | if (error) { |
| 558 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
| 559 | goto fail_statfs; |
| 560 | } |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 561 | set_bit(GLF_STICKY, &get_v2ip(sdp->sd_rindex)->i_gl->gl_flags); |
| 562 | sdp->sd_rindex_vn = get_v2ip(sdp->sd_rindex)->i_gl->gl_vn - 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 563 | |
| 564 | /* Read in the quota inode */ |
| 565 | error = gfs2_lookup_simple(sdp->sd_master_dir, "quota", |
| 566 | &sdp->sd_quota_inode); |
| 567 | if (error) { |
| 568 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
| 569 | goto fail_rindex; |
| 570 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 571 | return 0; |
| 572 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 573 | fail_qinode: |
| 574 | iput(sdp->sd_quota_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 575 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 576 | fail_rindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 577 | gfs2_clear_rgrpd(sdp); |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 578 | iput(sdp->sd_rindex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 579 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 580 | fail_statfs: |
| 581 | iput(sdp->sd_statfs_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 582 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 583 | fail_inum: |
| 584 | iput(sdp->sd_inum_inode); |
| 585 | fail_journal: |
| 586 | init_journal(sdp, UNDO); |
| 587 | fail_master: |
| 588 | iput(sdp->sd_master_dir); |
| 589 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 590 | return error; |
| 591 | } |
| 592 | |
| 593 | static int init_per_node(struct gfs2_sbd *sdp, int undo) |
| 594 | { |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 595 | struct inode *pn = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 596 | char buf[30]; |
| 597 | int error = 0; |
| 598 | |
| 599 | if (sdp->sd_args.ar_spectator) |
| 600 | return 0; |
| 601 | |
| 602 | if (undo) |
| 603 | goto fail_qc_gh; |
| 604 | |
| 605 | error = gfs2_lookup_simple(sdp->sd_master_dir, "per_node", &pn); |
| 606 | if (error) { |
| 607 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
| 608 | return error; |
| 609 | } |
| 610 | |
| 611 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); |
| 612 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ir_inode); |
| 613 | if (error) { |
| 614 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
| 615 | goto fail; |
| 616 | } |
| 617 | |
| 618 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
| 619 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_sc_inode); |
| 620 | if (error) { |
| 621 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
| 622 | goto fail_ir_i; |
| 623 | } |
| 624 | |
| 625 | sprintf(buf, "unlinked_tag%u", sdp->sd_jdesc->jd_jid); |
| 626 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ut_inode); |
| 627 | if (error) { |
| 628 | fs_err(sdp, "can't find local \"ut\" file: %d\n", error); |
| 629 | goto fail_sc_i; |
| 630 | } |
| 631 | |
| 632 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
| 633 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_qc_inode); |
| 634 | if (error) { |
| 635 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
| 636 | goto fail_ut_i; |
| 637 | } |
| 638 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 639 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 640 | pn = NULL; |
| 641 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 642 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_ir_inode)->i_gl, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 643 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
| 644 | &sdp->sd_ir_gh); |
| 645 | if (error) { |
| 646 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); |
| 647 | goto fail_qc_i; |
| 648 | } |
| 649 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 650 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_sc_inode)->i_gl, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 651 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
| 652 | &sdp->sd_sc_gh); |
| 653 | if (error) { |
| 654 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); |
| 655 | goto fail_ir_gh; |
| 656 | } |
| 657 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 658 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_ut_inode)->i_gl, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 659 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
| 660 | &sdp->sd_ut_gh); |
| 661 | if (error) { |
| 662 | fs_err(sdp, "can't lock local \"ut\" file: %d\n", error); |
| 663 | goto fail_sc_gh; |
| 664 | } |
| 665 | |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 666 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_qc_inode)->i_gl, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 667 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
| 668 | &sdp->sd_qc_gh); |
| 669 | if (error) { |
| 670 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); |
| 671 | goto fail_ut_gh; |
| 672 | } |
| 673 | |
| 674 | return 0; |
| 675 | |
| 676 | fail_qc_gh: |
| 677 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
| 678 | |
| 679 | fail_ut_gh: |
| 680 | gfs2_glock_dq_uninit(&sdp->sd_ut_gh); |
| 681 | |
| 682 | fail_sc_gh: |
| 683 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
| 684 | |
| 685 | fail_ir_gh: |
| 686 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
| 687 | |
| 688 | fail_qc_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 689 | iput(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 690 | |
| 691 | fail_ut_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 692 | iput(sdp->sd_ut_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 693 | |
| 694 | fail_sc_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 695 | iput(sdp->sd_sc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 696 | |
| 697 | fail_ir_i: |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 698 | iput(sdp->sd_ir_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 699 | |
| 700 | fail: |
| 701 | if (pn) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 702 | iput(pn); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 703 | return error; |
| 704 | } |
| 705 | |
| 706 | static int init_threads(struct gfs2_sbd *sdp, int undo) |
| 707 | { |
| 708 | struct task_struct *p; |
| 709 | int error = 0; |
| 710 | |
| 711 | if (undo) |
| 712 | goto fail_inoded; |
| 713 | |
| 714 | sdp->sd_log_flush_time = jiffies; |
| 715 | sdp->sd_jindex_refresh_time = jiffies; |
| 716 | |
| 717 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); |
| 718 | error = IS_ERR(p); |
| 719 | if (error) { |
| 720 | fs_err(sdp, "can't start logd thread: %d\n", error); |
| 721 | return error; |
| 722 | } |
| 723 | sdp->sd_logd_process = p; |
| 724 | |
| 725 | sdp->sd_statfs_sync_time = jiffies; |
| 726 | sdp->sd_quota_sync_time = jiffies; |
| 727 | |
| 728 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); |
| 729 | error = IS_ERR(p); |
| 730 | if (error) { |
| 731 | fs_err(sdp, "can't start quotad thread: %d\n", error); |
| 732 | goto fail; |
| 733 | } |
| 734 | sdp->sd_quotad_process = p; |
| 735 | |
| 736 | p = kthread_run(gfs2_inoded, sdp, "gfs2_inoded"); |
| 737 | error = IS_ERR(p); |
| 738 | if (error) { |
| 739 | fs_err(sdp, "can't start inoded thread: %d\n", error); |
| 740 | goto fail_quotad; |
| 741 | } |
| 742 | sdp->sd_inoded_process = p; |
| 743 | |
| 744 | return 0; |
| 745 | |
| 746 | fail_inoded: |
| 747 | kthread_stop(sdp->sd_inoded_process); |
| 748 | |
| 749 | fail_quotad: |
| 750 | kthread_stop(sdp->sd_quotad_process); |
| 751 | |
| 752 | fail: |
| 753 | kthread_stop(sdp->sd_logd_process); |
| 754 | |
| 755 | return error; |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * fill_super - Read in superblock |
| 760 | * @sb: The VFS superblock |
| 761 | * @data: Mount options |
| 762 | * @silent: Don't complain if it's not a GFS2 filesystem |
| 763 | * |
| 764 | * Returns: errno |
| 765 | */ |
| 766 | |
| 767 | static int fill_super(struct super_block *sb, void *data, int silent) |
| 768 | { |
| 769 | struct gfs2_sbd *sdp; |
| 770 | struct gfs2_holder mount_gh; |
| 771 | int error; |
| 772 | |
| 773 | sdp = init_sbd(sb); |
| 774 | if (!sdp) { |
Steven Whitehouse | d92a8d4 | 2006-02-27 10:57:14 -0500 | [diff] [blame^] | 775 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 776 | return -ENOMEM; |
| 777 | } |
| 778 | |
| 779 | error = gfs2_mount_args(sdp, (char *)data, 0); |
| 780 | if (error) { |
Steven Whitehouse | d92a8d4 | 2006-02-27 10:57:14 -0500 | [diff] [blame^] | 781 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 782 | goto fail; |
| 783 | } |
| 784 | |
| 785 | init_vfs(sdp); |
| 786 | |
| 787 | error = init_names(sdp, silent); |
| 788 | if (error) |
| 789 | goto fail; |
| 790 | |
| 791 | error = gfs2_sys_fs_add(sdp); |
| 792 | if (error) |
| 793 | goto fail; |
| 794 | |
| 795 | error = gfs2_lm_mount(sdp, silent); |
| 796 | if (error) |
| 797 | goto fail_sys; |
| 798 | |
| 799 | error = init_locking(sdp, &mount_gh, DO); |
| 800 | if (error) |
| 801 | goto fail_lm; |
| 802 | |
| 803 | error = init_sb(sdp, silent, DO); |
| 804 | if (error) |
| 805 | goto fail_locking; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 806 | |
| 807 | error = init_inodes(sdp, DO); |
| 808 | if (error) |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 809 | goto fail_sb; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 810 | |
| 811 | error = init_per_node(sdp, DO); |
| 812 | if (error) |
| 813 | goto fail_inodes; |
| 814 | |
| 815 | error = gfs2_statfs_init(sdp); |
| 816 | if (error) { |
| 817 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); |
| 818 | goto fail_per_node; |
| 819 | } |
| 820 | |
| 821 | error = init_threads(sdp, DO); |
| 822 | if (error) |
| 823 | goto fail_per_node; |
| 824 | |
| 825 | if (!(sb->s_flags & MS_RDONLY)) { |
| 826 | error = gfs2_make_fs_rw(sdp); |
| 827 | if (error) { |
| 828 | fs_err(sdp, "can't make FS RW: %d\n", error); |
| 829 | goto fail_threads; |
| 830 | } |
| 831 | } |
| 832 | |
| 833 | gfs2_glock_dq_uninit(&mount_gh); |
| 834 | |
| 835 | return 0; |
| 836 | |
| 837 | fail_threads: |
| 838 | init_threads(sdp, UNDO); |
| 839 | |
| 840 | fail_per_node: |
| 841 | init_per_node(sdp, UNDO); |
| 842 | |
| 843 | fail_inodes: |
| 844 | init_inodes(sdp, UNDO); |
| 845 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 846 | fail_sb: |
| 847 | init_sb(sdp, 0, UNDO); |
| 848 | |
| 849 | fail_locking: |
| 850 | init_locking(sdp, &mount_gh, UNDO); |
| 851 | |
| 852 | fail_lm: |
| 853 | gfs2_gl_hash_clear(sdp, WAIT); |
| 854 | gfs2_lm_unmount(sdp); |
| 855 | while (invalidate_inodes(sb)) |
| 856 | yield(); |
| 857 | |
| 858 | fail_sys: |
| 859 | gfs2_sys_fs_del(sdp); |
| 860 | |
| 861 | fail: |
| 862 | vfree(sdp); |
| 863 | set_v2sdp(sb, NULL); |
| 864 | |
| 865 | return error; |
| 866 | } |
| 867 | |
| 868 | static struct super_block *gfs2_get_sb(struct file_system_type *fs_type, |
| 869 | int flags, const char *dev_name, |
| 870 | void *data) |
| 871 | { |
| 872 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super); |
| 873 | } |
| 874 | |
| 875 | struct file_system_type gfs2_fs_type = { |
| 876 | .name = "gfs2", |
| 877 | .fs_flags = FS_REQUIRES_DEV, |
| 878 | .get_sb = gfs2_get_sb, |
| 879 | .kill_sb = kill_block_super, |
| 880 | .owner = THIS_MODULE, |
| 881 | }; |
| 882 | |