1ccd979bdSMark Fasheh /* -*- mode: c; c-basic-offset: 8; -*- 2ccd979bdSMark Fasheh * vim: noexpandtab sw=8 ts=8 sts=0: 3ccd979bdSMark Fasheh * 4ccd979bdSMark Fasheh * journal.c 5ccd979bdSMark Fasheh * 6ccd979bdSMark Fasheh * Defines functions of journalling api 7ccd979bdSMark Fasheh * 8ccd979bdSMark Fasheh * Copyright (C) 2003, 2004 Oracle. All rights reserved. 9ccd979bdSMark Fasheh * 10ccd979bdSMark Fasheh * This program is free software; you can redistribute it and/or 11ccd979bdSMark Fasheh * modify it under the terms of the GNU General Public 12ccd979bdSMark Fasheh * License as published by the Free Software Foundation; either 13ccd979bdSMark Fasheh * version 2 of the License, or (at your option) any later version. 14ccd979bdSMark Fasheh * 15ccd979bdSMark Fasheh * This program is distributed in the hope that it will be useful, 16ccd979bdSMark Fasheh * but WITHOUT ANY WARRANTY; without even the implied warranty of 17ccd979bdSMark Fasheh * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18ccd979bdSMark Fasheh * General Public License for more details. 19ccd979bdSMark Fasheh * 20ccd979bdSMark Fasheh * You should have received a copy of the GNU General Public 21ccd979bdSMark Fasheh * License along with this program; if not, write to the 22ccd979bdSMark Fasheh * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 23ccd979bdSMark Fasheh * Boston, MA 021110-1307, USA. 24ccd979bdSMark Fasheh */ 25ccd979bdSMark Fasheh 26ccd979bdSMark Fasheh #include <linux/fs.h> 27ccd979bdSMark Fasheh #include <linux/types.h> 28ccd979bdSMark Fasheh #include <linux/slab.h> 29ccd979bdSMark Fasheh #include <linux/highmem.h> 30ccd979bdSMark Fasheh #include <linux/kthread.h> 3183273932SSrinivas Eeda #include <linux/time.h> 3283273932SSrinivas Eeda #include <linux/random.h> 3355b465b6SJoseph Qi #include <linux/delay.h> 34ccd979bdSMark Fasheh 35ccd979bdSMark Fasheh #include <cluster/masklog.h> 36ccd979bdSMark Fasheh 37ccd979bdSMark Fasheh #include "ocfs2.h" 38ccd979bdSMark Fasheh 39ccd979bdSMark Fasheh #include "alloc.h" 4050655ae9SJoel Becker #include "blockcheck.h" 41316f4b9fSMark Fasheh #include "dir.h" 42ccd979bdSMark Fasheh #include "dlmglue.h" 43ccd979bdSMark Fasheh #include "extent_map.h" 44ccd979bdSMark Fasheh #include "heartbeat.h" 45ccd979bdSMark Fasheh #include "inode.h" 46ccd979bdSMark Fasheh #include "journal.h" 47ccd979bdSMark Fasheh #include "localalloc.h" 48ccd979bdSMark Fasheh #include "slot_map.h" 49ccd979bdSMark Fasheh #include "super.h" 50ccd979bdSMark Fasheh #include "sysfile.h" 510cf2f763SJoel Becker #include "uptodate.h" 522205363dSJan Kara #include "quota.h" 53ed460cffSJoseph Qi #include "file.h" 54ed460cffSJoseph Qi #include "namei.h" 55ccd979bdSMark Fasheh 56ccd979bdSMark Fasheh #include "buffer_head_io.h" 57b4107950STao Ma #include "ocfs2_trace.h" 58ccd979bdSMark Fasheh 5934af946aSIngo Molnar DEFINE_SPINLOCK(trans_inc_lock); 60ccd979bdSMark Fasheh 6183273932SSrinivas Eeda #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 6283273932SSrinivas Eeda 63ccd979bdSMark Fasheh static int ocfs2_force_read_journal(struct inode *inode); 64ccd979bdSMark Fasheh static int ocfs2_recover_node(struct ocfs2_super *osb, 652205363dSJan Kara int node_num, int slot_num); 66ccd979bdSMark Fasheh static int __ocfs2_recovery_thread(void *arg); 67ccd979bdSMark Fasheh static int ocfs2_commit_cache(struct ocfs2_super *osb); 6819ece546SJan Kara static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); 69ccd979bdSMark Fasheh static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, 70539d8264SSunil Mushran int dirty, int replayed); 71ccd979bdSMark Fasheh static int ocfs2_trylock_journal(struct ocfs2_super *osb, 72ccd979bdSMark Fasheh int slot_num); 73ccd979bdSMark Fasheh static int ocfs2_recover_orphans(struct ocfs2_super *osb, 74ed460cffSJoseph Qi int slot, 75ed460cffSJoseph Qi enum ocfs2_orphan_reco_type orphan_reco_type); 76ccd979bdSMark Fasheh static int ocfs2_commit_thread(void *arg); 779140db04SSrinivas Eeda static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, 789140db04SSrinivas Eeda int slot_num, 799140db04SSrinivas Eeda struct ocfs2_dinode *la_dinode, 809140db04SSrinivas Eeda struct ocfs2_dinode *tl_dinode, 81ed460cffSJoseph Qi struct ocfs2_quota_recovery *qrec, 82ed460cffSJoseph Qi enum ocfs2_orphan_reco_type orphan_reco_type); 83ccd979bdSMark Fasheh 8419ece546SJan Kara static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) 8519ece546SJan Kara { 8619ece546SJan Kara return __ocfs2_wait_on_mount(osb, 0); 8719ece546SJan Kara } 8819ece546SJan Kara 8919ece546SJan Kara static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) 9019ece546SJan Kara { 9119ece546SJan Kara return __ocfs2_wait_on_mount(osb, 1); 9219ece546SJan Kara } 9319ece546SJan Kara 949140db04SSrinivas Eeda /* 959140db04SSrinivas Eeda * This replay_map is to track online/offline slots, so we could recover 969140db04SSrinivas Eeda * offline slots during recovery and mount 979140db04SSrinivas Eeda */ 989140db04SSrinivas Eeda 999140db04SSrinivas Eeda enum ocfs2_replay_state { 1009140db04SSrinivas Eeda REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ 1019140db04SSrinivas Eeda REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ 1029140db04SSrinivas Eeda REPLAY_DONE /* Replay was already queued */ 1039140db04SSrinivas Eeda }; 1049140db04SSrinivas Eeda 1059140db04SSrinivas Eeda struct ocfs2_replay_map { 1069140db04SSrinivas Eeda unsigned int rm_slots; 1079140db04SSrinivas Eeda enum ocfs2_replay_state rm_state; 1089140db04SSrinivas Eeda unsigned char rm_replay_slots[0]; 1099140db04SSrinivas Eeda }; 1109140db04SSrinivas Eeda 1119140db04SSrinivas Eeda void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) 1129140db04SSrinivas Eeda { 1139140db04SSrinivas Eeda if (!osb->replay_map) 1149140db04SSrinivas Eeda return; 1159140db04SSrinivas Eeda 1169140db04SSrinivas Eeda /* If we've already queued the replay, we don't have any more to do */ 1179140db04SSrinivas Eeda if (osb->replay_map->rm_state == REPLAY_DONE) 1189140db04SSrinivas Eeda return; 1199140db04SSrinivas Eeda 1209140db04SSrinivas Eeda osb->replay_map->rm_state = state; 1219140db04SSrinivas Eeda } 1229140db04SSrinivas Eeda 1239140db04SSrinivas Eeda int ocfs2_compute_replay_slots(struct ocfs2_super *osb) 1249140db04SSrinivas Eeda { 1259140db04SSrinivas Eeda struct ocfs2_replay_map *replay_map; 1269140db04SSrinivas Eeda int i, node_num; 1279140db04SSrinivas Eeda 1289140db04SSrinivas Eeda /* If replay map is already set, we don't do it again */ 1299140db04SSrinivas Eeda if (osb->replay_map) 1309140db04SSrinivas Eeda return 0; 1319140db04SSrinivas Eeda 1329140db04SSrinivas Eeda replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + 1339140db04SSrinivas Eeda (osb->max_slots * sizeof(char)), GFP_KERNEL); 1349140db04SSrinivas Eeda 1359140db04SSrinivas Eeda if (!replay_map) { 1369140db04SSrinivas Eeda mlog_errno(-ENOMEM); 1379140db04SSrinivas Eeda return -ENOMEM; 1389140db04SSrinivas Eeda } 1399140db04SSrinivas Eeda 1409140db04SSrinivas Eeda spin_lock(&osb->osb_lock); 1419140db04SSrinivas Eeda 1429140db04SSrinivas Eeda replay_map->rm_slots = osb->max_slots; 1439140db04SSrinivas Eeda replay_map->rm_state = REPLAY_UNNEEDED; 1449140db04SSrinivas Eeda 1459140db04SSrinivas Eeda /* set rm_replay_slots for offline slot(s) */ 1469140db04SSrinivas Eeda for (i = 0; i < replay_map->rm_slots; i++) { 1479140db04SSrinivas Eeda if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT) 1489140db04SSrinivas Eeda replay_map->rm_replay_slots[i] = 1; 1499140db04SSrinivas Eeda } 1509140db04SSrinivas Eeda 1519140db04SSrinivas Eeda osb->replay_map = replay_map; 1529140db04SSrinivas Eeda spin_unlock(&osb->osb_lock); 1539140db04SSrinivas Eeda return 0; 1549140db04SSrinivas Eeda } 1559140db04SSrinivas Eeda 156ed460cffSJoseph Qi void ocfs2_queue_replay_slots(struct ocfs2_super *osb, 157ed460cffSJoseph Qi enum ocfs2_orphan_reco_type orphan_reco_type) 1589140db04SSrinivas Eeda { 1599140db04SSrinivas Eeda struct ocfs2_replay_map *replay_map = osb->replay_map; 1609140db04SSrinivas Eeda int i; 1619140db04SSrinivas Eeda 1629140db04SSrinivas Eeda if (!replay_map) 1639140db04SSrinivas Eeda return; 1649140db04SSrinivas Eeda 1659140db04SSrinivas Eeda if (replay_map->rm_state != REPLAY_NEEDED) 1669140db04SSrinivas Eeda return; 1679140db04SSrinivas Eeda 1689140db04SSrinivas Eeda for (i = 0; i < replay_map->rm_slots; i++) 1699140db04SSrinivas Eeda if (replay_map->rm_replay_slots[i]) 1709140db04SSrinivas Eeda ocfs2_queue_recovery_completion(osb->journal, i, NULL, 171ed460cffSJoseph Qi NULL, NULL, 172ed460cffSJoseph Qi orphan_reco_type); 1739140db04SSrinivas Eeda replay_map->rm_state = REPLAY_DONE; 1749140db04SSrinivas Eeda } 1759140db04SSrinivas Eeda 1769140db04SSrinivas Eeda void ocfs2_free_replay_slots(struct ocfs2_super *osb) 1779140db04SSrinivas Eeda { 1789140db04SSrinivas Eeda struct ocfs2_replay_map *replay_map = osb->replay_map; 1799140db04SSrinivas Eeda 1809140db04SSrinivas Eeda if (!osb->replay_map) 1819140db04SSrinivas Eeda return; 1829140db04SSrinivas Eeda 1839140db04SSrinivas Eeda kfree(replay_map); 1849140db04SSrinivas Eeda osb->replay_map = NULL; 1859140db04SSrinivas Eeda } 1869140db04SSrinivas Eeda 187553abd04SJoel Becker int ocfs2_recovery_init(struct ocfs2_super *osb) 188553abd04SJoel Becker { 189553abd04SJoel Becker struct ocfs2_recovery_map *rm; 190553abd04SJoel Becker 191553abd04SJoel Becker mutex_init(&osb->recovery_lock); 192553abd04SJoel Becker osb->disable_recovery = 0; 193553abd04SJoel Becker osb->recovery_thread_task = NULL; 194553abd04SJoel Becker init_waitqueue_head(&osb->recovery_event); 195553abd04SJoel Becker 196553abd04SJoel Becker rm = kzalloc(sizeof(struct ocfs2_recovery_map) + 197553abd04SJoel Becker osb->max_slots * sizeof(unsigned int), 198553abd04SJoel Becker GFP_KERNEL); 199553abd04SJoel Becker if (!rm) { 200553abd04SJoel Becker mlog_errno(-ENOMEM); 201553abd04SJoel Becker return -ENOMEM; 202553abd04SJoel Becker } 203553abd04SJoel Becker 204553abd04SJoel Becker rm->rm_entries = (unsigned int *)((char *)rm + 205553abd04SJoel Becker sizeof(struct ocfs2_recovery_map)); 206553abd04SJoel Becker osb->recovery_map = rm; 207553abd04SJoel Becker 208553abd04SJoel Becker return 0; 209553abd04SJoel Becker } 210553abd04SJoel Becker 211553abd04SJoel Becker /* we can't grab the goofy sem lock from inside wait_event, so we use 212553abd04SJoel Becker * memory barriers to make sure that we'll see the null task before 213553abd04SJoel Becker * being woken up */ 214553abd04SJoel Becker static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) 215553abd04SJoel Becker { 216553abd04SJoel Becker mb(); 217553abd04SJoel Becker return osb->recovery_thread_task != NULL; 218553abd04SJoel Becker } 219553abd04SJoel Becker 220553abd04SJoel Becker void ocfs2_recovery_exit(struct ocfs2_super *osb) 221553abd04SJoel Becker { 222553abd04SJoel Becker struct ocfs2_recovery_map *rm; 223553abd04SJoel Becker 224553abd04SJoel Becker /* disable any new recovery threads and wait for any currently 225553abd04SJoel Becker * running ones to exit. Do this before setting the vol_state. */ 226553abd04SJoel Becker mutex_lock(&osb->recovery_lock); 227553abd04SJoel Becker osb->disable_recovery = 1; 228553abd04SJoel Becker mutex_unlock(&osb->recovery_lock); 229553abd04SJoel Becker wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); 230553abd04SJoel Becker 231553abd04SJoel Becker /* At this point, we know that no more recovery threads can be 232553abd04SJoel Becker * launched, so wait for any recovery completion work to 233553abd04SJoel Becker * complete. */ 234553abd04SJoel Becker flush_workqueue(ocfs2_wq); 235553abd04SJoel Becker 236553abd04SJoel Becker /* 237553abd04SJoel Becker * Now that recovery is shut down, and the osb is about to be 238553abd04SJoel Becker * freed, the osb_lock is not taken here. 239553abd04SJoel Becker */ 240553abd04SJoel Becker rm = osb->recovery_map; 241553abd04SJoel Becker /* XXX: Should we bug if there are dirty entries? */ 242553abd04SJoel Becker 243553abd04SJoel Becker kfree(rm); 244553abd04SJoel Becker } 245553abd04SJoel Becker 246553abd04SJoel Becker static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, 247553abd04SJoel Becker unsigned int node_num) 248553abd04SJoel Becker { 249553abd04SJoel Becker int i; 250553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 251553abd04SJoel Becker 252553abd04SJoel Becker assert_spin_locked(&osb->osb_lock); 253553abd04SJoel Becker 254553abd04SJoel Becker for (i = 0; i < rm->rm_used; i++) { 255553abd04SJoel Becker if (rm->rm_entries[i] == node_num) 256553abd04SJoel Becker return 1; 257553abd04SJoel Becker } 258553abd04SJoel Becker 259553abd04SJoel Becker return 0; 260553abd04SJoel Becker } 261553abd04SJoel Becker 262553abd04SJoel Becker /* Behaves like test-and-set. Returns the previous value */ 263553abd04SJoel Becker static int ocfs2_recovery_map_set(struct ocfs2_super *osb, 264553abd04SJoel Becker unsigned int node_num) 265553abd04SJoel Becker { 266553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 267553abd04SJoel Becker 268553abd04SJoel Becker spin_lock(&osb->osb_lock); 269553abd04SJoel Becker if (__ocfs2_recovery_map_test(osb, node_num)) { 270553abd04SJoel Becker spin_unlock(&osb->osb_lock); 271553abd04SJoel Becker return 1; 272553abd04SJoel Becker } 273553abd04SJoel Becker 274553abd04SJoel Becker /* XXX: Can this be exploited? Not from o2dlm... */ 275553abd04SJoel Becker BUG_ON(rm->rm_used >= osb->max_slots); 276553abd04SJoel Becker 277553abd04SJoel Becker rm->rm_entries[rm->rm_used] = node_num; 278553abd04SJoel Becker rm->rm_used++; 279553abd04SJoel Becker spin_unlock(&osb->osb_lock); 280553abd04SJoel Becker 281553abd04SJoel Becker return 0; 282553abd04SJoel Becker } 283553abd04SJoel Becker 284553abd04SJoel Becker static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, 285553abd04SJoel Becker unsigned int node_num) 286553abd04SJoel Becker { 287553abd04SJoel Becker int i; 288553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 289553abd04SJoel Becker 290553abd04SJoel Becker spin_lock(&osb->osb_lock); 291553abd04SJoel Becker 292553abd04SJoel Becker for (i = 0; i < rm->rm_used; i++) { 293553abd04SJoel Becker if (rm->rm_entries[i] == node_num) 294553abd04SJoel Becker break; 295553abd04SJoel Becker } 296553abd04SJoel Becker 297553abd04SJoel Becker if (i < rm->rm_used) { 298553abd04SJoel Becker /* XXX: be careful with the pointer math */ 299553abd04SJoel Becker memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), 300553abd04SJoel Becker (rm->rm_used - i - 1) * sizeof(unsigned int)); 301553abd04SJoel Becker rm->rm_used--; 302553abd04SJoel Becker } 303553abd04SJoel Becker 304553abd04SJoel Becker spin_unlock(&osb->osb_lock); 305553abd04SJoel Becker } 306553abd04SJoel Becker 307ccd979bdSMark Fasheh static int ocfs2_commit_cache(struct ocfs2_super *osb) 308ccd979bdSMark Fasheh { 309ccd979bdSMark Fasheh int status = 0; 310ccd979bdSMark Fasheh unsigned int flushed; 311ccd979bdSMark Fasheh struct ocfs2_journal *journal = NULL; 312ccd979bdSMark Fasheh 313ccd979bdSMark Fasheh journal = osb->journal; 314ccd979bdSMark Fasheh 315ccd979bdSMark Fasheh /* Flush all pending commits and checkpoint the journal. */ 316ccd979bdSMark Fasheh down_write(&journal->j_trans_barrier); 317ccd979bdSMark Fasheh 318b4107950STao Ma flushed = atomic_read(&journal->j_num_trans); 319b4107950STao Ma trace_ocfs2_commit_cache_begin(flushed); 320b4107950STao Ma if (flushed == 0) { 321ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 322ccd979bdSMark Fasheh goto finally; 323ccd979bdSMark Fasheh } 324ccd979bdSMark Fasheh 3252b4e30fbSJoel Becker jbd2_journal_lock_updates(journal->j_journal); 3262b4e30fbSJoel Becker status = jbd2_journal_flush(journal->j_journal); 3272b4e30fbSJoel Becker jbd2_journal_unlock_updates(journal->j_journal); 328ccd979bdSMark Fasheh if (status < 0) { 329ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 330ccd979bdSMark Fasheh mlog_errno(status); 331ccd979bdSMark Fasheh goto finally; 332ccd979bdSMark Fasheh } 333ccd979bdSMark Fasheh 334f9c57adaSTao Ma ocfs2_inc_trans_id(journal); 335ccd979bdSMark Fasheh 336ccd979bdSMark Fasheh flushed = atomic_read(&journal->j_num_trans); 337ccd979bdSMark Fasheh atomic_set(&journal->j_num_trans, 0); 338ccd979bdSMark Fasheh up_write(&journal->j_trans_barrier); 339ccd979bdSMark Fasheh 340b4107950STao Ma trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed); 341ccd979bdSMark Fasheh 34234d024f8SMark Fasheh ocfs2_wake_downconvert_thread(osb); 343ccd979bdSMark Fasheh wake_up(&journal->j_checkpointed); 344ccd979bdSMark Fasheh finally: 345ccd979bdSMark Fasheh return status; 346ccd979bdSMark Fasheh } 347ccd979bdSMark Fasheh 3481fabe148SMark Fasheh handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) 349ccd979bdSMark Fasheh { 350ccd979bdSMark Fasheh journal_t *journal = osb->journal->j_journal; 3511fabe148SMark Fasheh handle_t *handle; 352ccd979bdSMark Fasheh 353ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb || !osb->journal->j_journal); 354ccd979bdSMark Fasheh 35565eff9ccSMark Fasheh if (ocfs2_is_hard_readonly(osb)) 35665eff9ccSMark Fasheh return ERR_PTR(-EROFS); 357ccd979bdSMark Fasheh 358ccd979bdSMark Fasheh BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); 359ccd979bdSMark Fasheh BUG_ON(max_buffs <= 0); 360ccd979bdSMark Fasheh 36190e86a63SJan Kara /* Nested transaction? Just return the handle... */ 36290e86a63SJan Kara if (journal_current_handle()) 36390e86a63SJan Kara return jbd2_journal_start(journal, max_buffs); 364ccd979bdSMark Fasheh 365fef6925cSJan Kara sb_start_intwrite(osb->sb); 366fef6925cSJan Kara 367ccd979bdSMark Fasheh down_read(&osb->journal->j_trans_barrier); 368ccd979bdSMark Fasheh 3692b4e30fbSJoel Becker handle = jbd2_journal_start(journal, max_buffs); 3701fabe148SMark Fasheh if (IS_ERR(handle)) { 371ccd979bdSMark Fasheh up_read(&osb->journal->j_trans_barrier); 372fef6925cSJan Kara sb_end_intwrite(osb->sb); 373ccd979bdSMark Fasheh 3741fabe148SMark Fasheh mlog_errno(PTR_ERR(handle)); 375ccd979bdSMark Fasheh 376ccd979bdSMark Fasheh if (is_journal_aborted(journal)) { 377ccd979bdSMark Fasheh ocfs2_abort(osb->sb, "Detected aborted journal"); 3781fabe148SMark Fasheh handle = ERR_PTR(-EROFS); 379ccd979bdSMark Fasheh } 380c271c5c2SSunil Mushran } else { 381c271c5c2SSunil Mushran if (!ocfs2_mount_local(osb)) 382ccd979bdSMark Fasheh atomic_inc(&(osb->journal->j_num_trans)); 383c271c5c2SSunil Mushran } 384ccd979bdSMark Fasheh 385ccd979bdSMark Fasheh return handle; 386ccd979bdSMark Fasheh } 387ccd979bdSMark Fasheh 3881fabe148SMark Fasheh int ocfs2_commit_trans(struct ocfs2_super *osb, 3891fabe148SMark Fasheh handle_t *handle) 390ccd979bdSMark Fasheh { 39190e86a63SJan Kara int ret, nested; 39202dc1af4SMark Fasheh struct ocfs2_journal *journal = osb->journal; 393ccd979bdSMark Fasheh 394ccd979bdSMark Fasheh BUG_ON(!handle); 395ccd979bdSMark Fasheh 39690e86a63SJan Kara nested = handle->h_ref > 1; 3972b4e30fbSJoel Becker ret = jbd2_journal_stop(handle); 3981fabe148SMark Fasheh if (ret < 0) 3991fabe148SMark Fasheh mlog_errno(ret); 400ccd979bdSMark Fasheh 401fef6925cSJan Kara if (!nested) { 402ccd979bdSMark Fasheh up_read(&journal->j_trans_barrier); 403fef6925cSJan Kara sb_end_intwrite(osb->sb); 404fef6925cSJan Kara } 405ccd979bdSMark Fasheh 4061fabe148SMark Fasheh return ret; 407ccd979bdSMark Fasheh } 408ccd979bdSMark Fasheh 409ccd979bdSMark Fasheh /* 410c901fb00STao Ma * 'nblocks' is what you want to add to the current transaction. 411ccd979bdSMark Fasheh * 4122b4e30fbSJoel Becker * This might call jbd2_journal_restart() which will commit dirty buffers 413e8aed345SMark Fasheh * and then restart the transaction. Before calling 414e8aed345SMark Fasheh * ocfs2_extend_trans(), any changed blocks should have been 415e8aed345SMark Fasheh * dirtied. After calling it, all blocks which need to be changed must 416e8aed345SMark Fasheh * go through another set of journal_access/journal_dirty calls. 417e8aed345SMark Fasheh * 418ccd979bdSMark Fasheh * WARNING: This will not release any semaphores or disk locks taken 419ccd979bdSMark Fasheh * during the transaction, so make sure they were taken *before* 420ccd979bdSMark Fasheh * start_trans or we'll have ordering deadlocks. 421ccd979bdSMark Fasheh * 422ccd979bdSMark Fasheh * WARNING2: Note that we do *not* drop j_trans_barrier here. This is 423ccd979bdSMark Fasheh * good because transaction ids haven't yet been recorded on the 424ccd979bdSMark Fasheh * cluster locks associated with this handle. 425ccd979bdSMark Fasheh */ 4261fc58146SMark Fasheh int ocfs2_extend_trans(handle_t *handle, int nblocks) 427ccd979bdSMark Fasheh { 428c901fb00STao Ma int status, old_nblocks; 429ccd979bdSMark Fasheh 430ccd979bdSMark Fasheh BUG_ON(!handle); 431c901fb00STao Ma BUG_ON(nblocks < 0); 432ccd979bdSMark Fasheh 433c901fb00STao Ma if (!nblocks) 434c901fb00STao Ma return 0; 435c901fb00STao Ma 436c901fb00STao Ma old_nblocks = handle->h_buffer_credits; 437ccd979bdSMark Fasheh 438b4107950STao Ma trace_ocfs2_extend_trans(old_nblocks, nblocks); 439ccd979bdSMark Fasheh 440e407e397SJoel Becker #ifdef CONFIG_OCFS2_DEBUG_FS 4410879c584SMark Fasheh status = 1; 4420879c584SMark Fasheh #else 4432b4e30fbSJoel Becker status = jbd2_journal_extend(handle, nblocks); 444ccd979bdSMark Fasheh if (status < 0) { 445ccd979bdSMark Fasheh mlog_errno(status); 446ccd979bdSMark Fasheh goto bail; 447ccd979bdSMark Fasheh } 4480879c584SMark Fasheh #endif 449ccd979bdSMark Fasheh 450ccd979bdSMark Fasheh if (status > 0) { 451b4107950STao Ma trace_ocfs2_extend_trans_restart(old_nblocks + nblocks); 452c901fb00STao Ma status = jbd2_journal_restart(handle, 453c901fb00STao Ma old_nblocks + nblocks); 454ccd979bdSMark Fasheh if (status < 0) { 455ccd979bdSMark Fasheh mlog_errno(status); 456ccd979bdSMark Fasheh goto bail; 457ccd979bdSMark Fasheh } 45801ddf1e1SMark Fasheh } 459ccd979bdSMark Fasheh 460ccd979bdSMark Fasheh status = 0; 461ccd979bdSMark Fasheh bail: 462ccd979bdSMark Fasheh return status; 463ccd979bdSMark Fasheh } 464ccd979bdSMark Fasheh 4652b1e55c3SYounger Liu /* 4662b1e55c3SYounger Liu * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA. 4672b1e55c3SYounger Liu * If that fails, restart the transaction & regain write access for the 4682b1e55c3SYounger Liu * buffer head which is used for metadata modifications. 4692b1e55c3SYounger Liu * Taken from Ext4: extend_or_restart_transaction() 4702b1e55c3SYounger Liu */ 4712b1e55c3SYounger Liu int ocfs2_allocate_extend_trans(handle_t *handle, int thresh) 4722b1e55c3SYounger Liu { 4732b1e55c3SYounger Liu int status, old_nblks; 4742b1e55c3SYounger Liu 4752b1e55c3SYounger Liu BUG_ON(!handle); 4762b1e55c3SYounger Liu 4772b1e55c3SYounger Liu old_nblks = handle->h_buffer_credits; 4782b1e55c3SYounger Liu trace_ocfs2_allocate_extend_trans(old_nblks, thresh); 4792b1e55c3SYounger Liu 4802b1e55c3SYounger Liu if (old_nblks < thresh) 4812b1e55c3SYounger Liu return 0; 4822b1e55c3SYounger Liu 4832b1e55c3SYounger Liu status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA); 4842b1e55c3SYounger Liu if (status < 0) { 4852b1e55c3SYounger Liu mlog_errno(status); 4862b1e55c3SYounger Liu goto bail; 4872b1e55c3SYounger Liu } 4882b1e55c3SYounger Liu 4892b1e55c3SYounger Liu if (status > 0) { 4902b1e55c3SYounger Liu status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA); 4912b1e55c3SYounger Liu if (status < 0) 4922b1e55c3SYounger Liu mlog_errno(status); 4932b1e55c3SYounger Liu } 4942b1e55c3SYounger Liu 4952b1e55c3SYounger Liu bail: 4962b1e55c3SYounger Liu return status; 4972b1e55c3SYounger Liu } 4982b1e55c3SYounger Liu 4992b1e55c3SYounger Liu 50050655ae9SJoel Becker struct ocfs2_triggers { 50150655ae9SJoel Becker struct jbd2_buffer_trigger_type ot_triggers; 50250655ae9SJoel Becker int ot_offset; 50350655ae9SJoel Becker }; 50450655ae9SJoel Becker 50550655ae9SJoel Becker static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) 50650655ae9SJoel Becker { 50750655ae9SJoel Becker return container_of(triggers, struct ocfs2_triggers, ot_triggers); 50850655ae9SJoel Becker } 50950655ae9SJoel Becker 51013ceef09SJan Kara static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, 51150655ae9SJoel Becker struct buffer_head *bh, 51250655ae9SJoel Becker void *data, size_t size) 51350655ae9SJoel Becker { 51450655ae9SJoel Becker struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); 51550655ae9SJoel Becker 51650655ae9SJoel Becker /* 51750655ae9SJoel Becker * We aren't guaranteed to have the superblock here, so we 51850655ae9SJoel Becker * must unconditionally compute the ecc data. 51950655ae9SJoel Becker * __ocfs2_journal_access() will only set the triggers if 52050655ae9SJoel Becker * metaecc is enabled. 52150655ae9SJoel Becker */ 52250655ae9SJoel Becker ocfs2_block_check_compute(data, size, data + ot->ot_offset); 52350655ae9SJoel Becker } 52450655ae9SJoel Becker 52550655ae9SJoel Becker /* 52650655ae9SJoel Becker * Quota blocks have their own trigger because the struct ocfs2_block_check 52750655ae9SJoel Becker * offset depends on the blocksize. 52850655ae9SJoel Becker */ 52913ceef09SJan Kara static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, 53050655ae9SJoel Becker struct buffer_head *bh, 53150655ae9SJoel Becker void *data, size_t size) 53250655ae9SJoel Becker { 53350655ae9SJoel Becker struct ocfs2_disk_dqtrailer *dqt = 53450655ae9SJoel Becker ocfs2_block_dqtrailer(size, data); 53550655ae9SJoel Becker 53650655ae9SJoel Becker /* 53750655ae9SJoel Becker * We aren't guaranteed to have the superblock here, so we 53850655ae9SJoel Becker * must unconditionally compute the ecc data. 53950655ae9SJoel Becker * __ocfs2_journal_access() will only set the triggers if 54050655ae9SJoel Becker * metaecc is enabled. 54150655ae9SJoel Becker */ 54250655ae9SJoel Becker ocfs2_block_check_compute(data, size, &dqt->dq_check); 54350655ae9SJoel Becker } 54450655ae9SJoel Becker 545c175a518SJoel Becker /* 546c175a518SJoel Becker * Directory blocks also have their own trigger because the 547c175a518SJoel Becker * struct ocfs2_block_check offset depends on the blocksize. 548c175a518SJoel Becker */ 54913ceef09SJan Kara static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, 550c175a518SJoel Becker struct buffer_head *bh, 551c175a518SJoel Becker void *data, size_t size) 552c175a518SJoel Becker { 553c175a518SJoel Becker struct ocfs2_dir_block_trailer *trailer = 554c175a518SJoel Becker ocfs2_dir_trailer_from_size(size, data); 555c175a518SJoel Becker 556c175a518SJoel Becker /* 557c175a518SJoel Becker * We aren't guaranteed to have the superblock here, so we 558c175a518SJoel Becker * must unconditionally compute the ecc data. 559c175a518SJoel Becker * __ocfs2_journal_access() will only set the triggers if 560c175a518SJoel Becker * metaecc is enabled. 561c175a518SJoel Becker */ 562c175a518SJoel Becker ocfs2_block_check_compute(data, size, &trailer->db_check); 563c175a518SJoel Becker } 564c175a518SJoel Becker 56550655ae9SJoel Becker static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, 56650655ae9SJoel Becker struct buffer_head *bh) 56750655ae9SJoel Becker { 56850655ae9SJoel Becker mlog(ML_ERROR, 56950655ae9SJoel Becker "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " 57050655ae9SJoel Becker "bh->b_blocknr = %llu\n", 57150655ae9SJoel Becker (unsigned long)bh, 57250655ae9SJoel Becker (unsigned long long)bh->b_blocknr); 57350655ae9SJoel Becker 57450655ae9SJoel Becker /* We aren't guaranteed to have the superblock here - but if we 57550655ae9SJoel Becker * don't, it'll just crash. */ 57650655ae9SJoel Becker ocfs2_error(bh->b_assoc_map->host->i_sb, 57750655ae9SJoel Becker "JBD2 has aborted our journal, ocfs2 cannot continue\n"); 57850655ae9SJoel Becker } 57950655ae9SJoel Becker 58050655ae9SJoel Becker static struct ocfs2_triggers di_triggers = { 58150655ae9SJoel Becker .ot_triggers = { 58213ceef09SJan Kara .t_frozen = ocfs2_frozen_trigger, 58350655ae9SJoel Becker .t_abort = ocfs2_abort_trigger, 58450655ae9SJoel Becker }, 58550655ae9SJoel Becker .ot_offset = offsetof(struct ocfs2_dinode, i_check), 58650655ae9SJoel Becker }; 58750655ae9SJoel Becker 58850655ae9SJoel Becker static struct ocfs2_triggers eb_triggers = { 58950655ae9SJoel Becker .ot_triggers = { 59013ceef09SJan Kara .t_frozen = ocfs2_frozen_trigger, 59150655ae9SJoel Becker .t_abort = ocfs2_abort_trigger, 59250655ae9SJoel Becker }, 59350655ae9SJoel Becker .ot_offset = offsetof(struct ocfs2_extent_block, h_check), 59450655ae9SJoel Becker }; 59550655ae9SJoel Becker 59693c97087STao Ma static struct ocfs2_triggers rb_triggers = { 59793c97087STao Ma .ot_triggers = { 59813ceef09SJan Kara .t_frozen = ocfs2_frozen_trigger, 59993c97087STao Ma .t_abort = ocfs2_abort_trigger, 60093c97087STao Ma }, 60193c97087STao Ma .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), 60293c97087STao Ma }; 60393c97087STao Ma 60450655ae9SJoel Becker static struct ocfs2_triggers gd_triggers = { 60550655ae9SJoel Becker .ot_triggers = { 60613ceef09SJan Kara .t_frozen = ocfs2_frozen_trigger, 60750655ae9SJoel Becker .t_abort = ocfs2_abort_trigger, 60850655ae9SJoel Becker }, 60950655ae9SJoel Becker .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), 61050655ae9SJoel Becker }; 61150655ae9SJoel Becker 612c175a518SJoel Becker static struct ocfs2_triggers db_triggers = { 613c175a518SJoel Becker .ot_triggers = { 61413ceef09SJan Kara .t_frozen = ocfs2_db_frozen_trigger, 615c175a518SJoel Becker .t_abort = ocfs2_abort_trigger, 616c175a518SJoel Becker }, 617c175a518SJoel Becker }; 618c175a518SJoel Becker 61950655ae9SJoel Becker static struct ocfs2_triggers xb_triggers = { 62050655ae9SJoel Becker .ot_triggers = { 62113ceef09SJan Kara .t_frozen = ocfs2_frozen_trigger, 62250655ae9SJoel Becker .t_abort = ocfs2_abort_trigger, 62350655ae9SJoel Becker }, 62450655ae9SJoel Becker .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), 62550655ae9SJoel Becker }; 62650655ae9SJoel Becker 62750655ae9SJoel Becker static struct ocfs2_triggers dq_triggers = { 62850655ae9SJoel Becker .ot_triggers = { 62913ceef09SJan Kara .t_frozen = ocfs2_dq_frozen_trigger, 63050655ae9SJoel Becker .t_abort = ocfs2_abort_trigger, 63150655ae9SJoel Becker }, 63250655ae9SJoel Becker }; 63350655ae9SJoel Becker 6349b7895efSMark Fasheh static struct ocfs2_triggers dr_triggers = { 6359b7895efSMark Fasheh .ot_triggers = { 63613ceef09SJan Kara .t_frozen = ocfs2_frozen_trigger, 6379b7895efSMark Fasheh .t_abort = ocfs2_abort_trigger, 6389b7895efSMark Fasheh }, 6399b7895efSMark Fasheh .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), 6409b7895efSMark Fasheh }; 6419b7895efSMark Fasheh 6429b7895efSMark Fasheh static struct ocfs2_triggers dl_triggers = { 6439b7895efSMark Fasheh .ot_triggers = { 64413ceef09SJan Kara .t_frozen = ocfs2_frozen_trigger, 6459b7895efSMark Fasheh .t_abort = ocfs2_abort_trigger, 6469b7895efSMark Fasheh }, 6479b7895efSMark Fasheh .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), 6489b7895efSMark Fasheh }; 6499b7895efSMark Fasheh 65050655ae9SJoel Becker static int __ocfs2_journal_access(handle_t *handle, 6510cf2f763SJoel Becker struct ocfs2_caching_info *ci, 652ccd979bdSMark Fasheh struct buffer_head *bh, 65350655ae9SJoel Becker struct ocfs2_triggers *triggers, 654ccd979bdSMark Fasheh int type) 655ccd979bdSMark Fasheh { 656ccd979bdSMark Fasheh int status; 6570cf2f763SJoel Becker struct ocfs2_super *osb = 6580cf2f763SJoel Becker OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); 659ccd979bdSMark Fasheh 6600cf2f763SJoel Becker BUG_ON(!ci || !ci->ci_ops); 661ccd979bdSMark Fasheh BUG_ON(!handle); 662ccd979bdSMark Fasheh BUG_ON(!bh); 663ccd979bdSMark Fasheh 664b4107950STao Ma trace_ocfs2_journal_access( 665b4107950STao Ma (unsigned long long)ocfs2_metadata_cache_owner(ci), 666b4107950STao Ma (unsigned long long)bh->b_blocknr, type, bh->b_size); 667ccd979bdSMark Fasheh 668ccd979bdSMark Fasheh /* we can safely remove this assertion after testing. */ 669ccd979bdSMark Fasheh if (!buffer_uptodate(bh)) { 670ccd979bdSMark Fasheh mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); 671ccd979bdSMark Fasheh mlog(ML_ERROR, "b_blocknr=%llu\n", 672ccd979bdSMark Fasheh (unsigned long long)bh->b_blocknr); 673ccd979bdSMark Fasheh BUG(); 674ccd979bdSMark Fasheh } 675ccd979bdSMark Fasheh 6760cf2f763SJoel Becker /* Set the current transaction information on the ci so 677ccd979bdSMark Fasheh * that the locking code knows whether it can drop it's locks 6780cf2f763SJoel Becker * on this ci or not. We're protected from the commit 679ccd979bdSMark Fasheh * thread updating the current transaction id until 680ccd979bdSMark Fasheh * ocfs2_commit_trans() because ocfs2_start_trans() took 681ccd979bdSMark Fasheh * j_trans_barrier for us. */ 6820cf2f763SJoel Becker ocfs2_set_ci_lock_trans(osb->journal, ci); 683ccd979bdSMark Fasheh 6840cf2f763SJoel Becker ocfs2_metadata_cache_io_lock(ci); 685ccd979bdSMark Fasheh switch (type) { 686ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_CREATE: 687ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_WRITE: 6882b4e30fbSJoel Becker status = jbd2_journal_get_write_access(handle, bh); 689ccd979bdSMark Fasheh break; 690ccd979bdSMark Fasheh 691ccd979bdSMark Fasheh case OCFS2_JOURNAL_ACCESS_UNDO: 6922b4e30fbSJoel Becker status = jbd2_journal_get_undo_access(handle, bh); 693ccd979bdSMark Fasheh break; 694ccd979bdSMark Fasheh 695ccd979bdSMark Fasheh default: 696ccd979bdSMark Fasheh status = -EINVAL; 697af901ca1SAndré Goddard Rosa mlog(ML_ERROR, "Unknown access type!\n"); 698ccd979bdSMark Fasheh } 6990cf2f763SJoel Becker if (!status && ocfs2_meta_ecc(osb) && triggers) 70050655ae9SJoel Becker jbd2_journal_set_triggers(bh, &triggers->ot_triggers); 7010cf2f763SJoel Becker ocfs2_metadata_cache_io_unlock(ci); 702ccd979bdSMark Fasheh 703ccd979bdSMark Fasheh if (status < 0) 704ccd979bdSMark Fasheh mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", 705ccd979bdSMark Fasheh status, type); 706ccd979bdSMark Fasheh 707ccd979bdSMark Fasheh return status; 708ccd979bdSMark Fasheh } 709ccd979bdSMark Fasheh 7100cf2f763SJoel Becker int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, 71150655ae9SJoel Becker struct buffer_head *bh, int type) 71250655ae9SJoel Becker { 7130cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type); 71450655ae9SJoel Becker } 71550655ae9SJoel Becker 7160cf2f763SJoel Becker int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, 71750655ae9SJoel Becker struct buffer_head *bh, int type) 71850655ae9SJoel Becker { 7190cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type); 72050655ae9SJoel Becker } 72150655ae9SJoel Becker 72293c97087STao Ma int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, 72393c97087STao Ma struct buffer_head *bh, int type) 72493c97087STao Ma { 72593c97087STao Ma return __ocfs2_journal_access(handle, ci, bh, &rb_triggers, 72693c97087STao Ma type); 72793c97087STao Ma } 72893c97087STao Ma 7290cf2f763SJoel Becker int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, 73050655ae9SJoel Becker struct buffer_head *bh, int type) 73150655ae9SJoel Becker { 7320cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type); 73350655ae9SJoel Becker } 73450655ae9SJoel Becker 7350cf2f763SJoel Becker int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, 73650655ae9SJoel Becker struct buffer_head *bh, int type) 73750655ae9SJoel Becker { 7380cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type); 73950655ae9SJoel Becker } 74050655ae9SJoel Becker 7410cf2f763SJoel Becker int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, 74250655ae9SJoel Becker struct buffer_head *bh, int type) 74350655ae9SJoel Becker { 7440cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type); 74550655ae9SJoel Becker } 74650655ae9SJoel Becker 7470cf2f763SJoel Becker int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, 74850655ae9SJoel Becker struct buffer_head *bh, int type) 74950655ae9SJoel Becker { 7500cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type); 75150655ae9SJoel Becker } 75250655ae9SJoel Becker 7530cf2f763SJoel Becker int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, 7549b7895efSMark Fasheh struct buffer_head *bh, int type) 7559b7895efSMark Fasheh { 7560cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type); 7579b7895efSMark Fasheh } 7589b7895efSMark Fasheh 7590cf2f763SJoel Becker int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, 7609b7895efSMark Fasheh struct buffer_head *bh, int type) 7619b7895efSMark Fasheh { 7620cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type); 7639b7895efSMark Fasheh } 7649b7895efSMark Fasheh 7650cf2f763SJoel Becker int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, 76650655ae9SJoel Becker struct buffer_head *bh, int type) 76750655ae9SJoel Becker { 7680cf2f763SJoel Becker return __ocfs2_journal_access(handle, ci, bh, NULL, type); 76950655ae9SJoel Becker } 77050655ae9SJoel Becker 771ec20cec7SJoel Becker void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) 772ccd979bdSMark Fasheh { 773ccd979bdSMark Fasheh int status; 774ccd979bdSMark Fasheh 775b4107950STao Ma trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr); 776ccd979bdSMark Fasheh 7772b4e30fbSJoel Becker status = jbd2_journal_dirty_metadata(handle, bh); 778ec20cec7SJoel Becker BUG_ON(status); 779ccd979bdSMark Fasheh } 780ccd979bdSMark Fasheh 7812b4e30fbSJoel Becker #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) 782ccd979bdSMark Fasheh 783ccd979bdSMark Fasheh void ocfs2_set_journal_params(struct ocfs2_super *osb) 784ccd979bdSMark Fasheh { 785ccd979bdSMark Fasheh journal_t *journal = osb->journal->j_journal; 786d147b3d6SMark Fasheh unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; 787d147b3d6SMark Fasheh 788d147b3d6SMark Fasheh if (osb->osb_commit_interval) 789d147b3d6SMark Fasheh commit_interval = osb->osb_commit_interval; 790ccd979bdSMark Fasheh 791a931da6aSTheodore Ts'o write_lock(&journal->j_state_lock); 792d147b3d6SMark Fasheh journal->j_commit_interval = commit_interval; 793ccd979bdSMark Fasheh if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) 7942b4e30fbSJoel Becker journal->j_flags |= JBD2_BARRIER; 795ccd979bdSMark Fasheh else 7962b4e30fbSJoel Becker journal->j_flags &= ~JBD2_BARRIER; 797a931da6aSTheodore Ts'o write_unlock(&journal->j_state_lock); 798ccd979bdSMark Fasheh } 799ccd979bdSMark Fasheh 800ccd979bdSMark Fasheh int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) 801ccd979bdSMark Fasheh { 802ccd979bdSMark Fasheh int status = -1; 803ccd979bdSMark Fasheh struct inode *inode = NULL; /* the journal inode */ 804ccd979bdSMark Fasheh journal_t *j_journal = NULL; 805ccd979bdSMark Fasheh struct ocfs2_dinode *di = NULL; 806ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 807ccd979bdSMark Fasheh struct ocfs2_super *osb; 808e63aecb6SMark Fasheh int inode_lock = 0; 809ccd979bdSMark Fasheh 810ccd979bdSMark Fasheh BUG_ON(!journal); 811ccd979bdSMark Fasheh 812ccd979bdSMark Fasheh osb = journal->j_osb; 813ccd979bdSMark Fasheh 814ccd979bdSMark Fasheh /* already have the inode for our journal */ 815ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 816ccd979bdSMark Fasheh osb->slot_num); 817ccd979bdSMark Fasheh if (inode == NULL) { 818ccd979bdSMark Fasheh status = -EACCES; 819ccd979bdSMark Fasheh mlog_errno(status); 820ccd979bdSMark Fasheh goto done; 821ccd979bdSMark Fasheh } 822ccd979bdSMark Fasheh if (is_bad_inode(inode)) { 823ccd979bdSMark Fasheh mlog(ML_ERROR, "access error (bad inode)\n"); 824ccd979bdSMark Fasheh iput(inode); 825ccd979bdSMark Fasheh inode = NULL; 826ccd979bdSMark Fasheh status = -EACCES; 827ccd979bdSMark Fasheh goto done; 828ccd979bdSMark Fasheh } 829ccd979bdSMark Fasheh 830ccd979bdSMark Fasheh SET_INODE_JOURNAL(inode); 831ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count++; 832ccd979bdSMark Fasheh 8336eff5790SMark Fasheh /* Skip recovery waits here - journal inode metadata never 8346eff5790SMark Fasheh * changes in a live cluster so it can be considered an 8356eff5790SMark Fasheh * exception to the rule. */ 836e63aecb6SMark Fasheh status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); 837ccd979bdSMark Fasheh if (status < 0) { 838ccd979bdSMark Fasheh if (status != -ERESTARTSYS) 839ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not get lock on journal!\n"); 840ccd979bdSMark Fasheh goto done; 841ccd979bdSMark Fasheh } 842ccd979bdSMark Fasheh 843e63aecb6SMark Fasheh inode_lock = 1; 844ccd979bdSMark Fasheh di = (struct ocfs2_dinode *)bh->b_data; 845ccd979bdSMark Fasheh 846f17c20ddSJunxiao Bi if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) { 847ccd979bdSMark Fasheh mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", 848f17c20ddSJunxiao Bi i_size_read(inode)); 849ccd979bdSMark Fasheh status = -EINVAL; 850ccd979bdSMark Fasheh goto done; 851ccd979bdSMark Fasheh } 852ccd979bdSMark Fasheh 853f17c20ddSJunxiao Bi trace_ocfs2_journal_init(i_size_read(inode), 854b4107950STao Ma (unsigned long long)inode->i_blocks, 855b4107950STao Ma OCFS2_I(inode)->ip_clusters); 856ccd979bdSMark Fasheh 857ccd979bdSMark Fasheh /* call the kernels journal init function now */ 8582b4e30fbSJoel Becker j_journal = jbd2_journal_init_inode(inode); 859ccd979bdSMark Fasheh if (j_journal == NULL) { 860ccd979bdSMark Fasheh mlog(ML_ERROR, "Linux journal layer error\n"); 861ccd979bdSMark Fasheh status = -EINVAL; 862ccd979bdSMark Fasheh goto done; 863ccd979bdSMark Fasheh } 864ccd979bdSMark Fasheh 865b4107950STao Ma trace_ocfs2_journal_init_maxlen(j_journal->j_maxlen); 866ccd979bdSMark Fasheh 867ccd979bdSMark Fasheh *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & 868ccd979bdSMark Fasheh OCFS2_JOURNAL_DIRTY_FL); 869ccd979bdSMark Fasheh 870ccd979bdSMark Fasheh journal->j_journal = j_journal; 871ccd979bdSMark Fasheh journal->j_inode = inode; 872ccd979bdSMark Fasheh journal->j_bh = bh; 873ccd979bdSMark Fasheh 874ccd979bdSMark Fasheh ocfs2_set_journal_params(osb); 875ccd979bdSMark Fasheh 876ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_LOADED; 877ccd979bdSMark Fasheh 878ccd979bdSMark Fasheh status = 0; 879ccd979bdSMark Fasheh done: 880ccd979bdSMark Fasheh if (status < 0) { 881e63aecb6SMark Fasheh if (inode_lock) 882e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 883ccd979bdSMark Fasheh brelse(bh); 884ccd979bdSMark Fasheh if (inode) { 885ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count--; 886ccd979bdSMark Fasheh iput(inode); 887ccd979bdSMark Fasheh } 888ccd979bdSMark Fasheh } 889ccd979bdSMark Fasheh 890ccd979bdSMark Fasheh return status; 891ccd979bdSMark Fasheh } 892ccd979bdSMark Fasheh 893539d8264SSunil Mushran static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) 894539d8264SSunil Mushran { 895539d8264SSunil Mushran le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); 896539d8264SSunil Mushran } 897539d8264SSunil Mushran 898539d8264SSunil Mushran static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) 899539d8264SSunil Mushran { 900539d8264SSunil Mushran return le32_to_cpu(di->id1.journal1.ij_recovery_generation); 901539d8264SSunil Mushran } 902539d8264SSunil Mushran 903ccd979bdSMark Fasheh static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, 904539d8264SSunil Mushran int dirty, int replayed) 905ccd979bdSMark Fasheh { 906ccd979bdSMark Fasheh int status; 907ccd979bdSMark Fasheh unsigned int flags; 908ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 909ccd979bdSMark Fasheh struct buffer_head *bh = journal->j_bh; 910ccd979bdSMark Fasheh struct ocfs2_dinode *fe; 911ccd979bdSMark Fasheh 912ccd979bdSMark Fasheh fe = (struct ocfs2_dinode *)bh->b_data; 91310995aa2SJoel Becker 91410995aa2SJoel Becker /* The journal bh on the osb always comes from ocfs2_journal_init() 91510995aa2SJoel Becker * and was validated there inside ocfs2_inode_lock_full(). It's a 91610995aa2SJoel Becker * code bug if we mess it up. */ 91710995aa2SJoel Becker BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); 918ccd979bdSMark Fasheh 919ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 920ccd979bdSMark Fasheh if (dirty) 921ccd979bdSMark Fasheh flags |= OCFS2_JOURNAL_DIRTY_FL; 922ccd979bdSMark Fasheh else 923ccd979bdSMark Fasheh flags &= ~OCFS2_JOURNAL_DIRTY_FL; 924ccd979bdSMark Fasheh fe->id1.journal1.ij_flags = cpu_to_le32(flags); 925ccd979bdSMark Fasheh 926539d8264SSunil Mushran if (replayed) 927539d8264SSunil Mushran ocfs2_bump_recovery_generation(fe); 928539d8264SSunil Mushran 92913723d00SJoel Becker ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); 9308cb471e8SJoel Becker status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); 931ccd979bdSMark Fasheh if (status < 0) 932ccd979bdSMark Fasheh mlog_errno(status); 933ccd979bdSMark Fasheh 934ccd979bdSMark Fasheh return status; 935ccd979bdSMark Fasheh } 936ccd979bdSMark Fasheh 937ccd979bdSMark Fasheh /* 938ccd979bdSMark Fasheh * If the journal has been kmalloc'd it needs to be freed after this 939ccd979bdSMark Fasheh * call. 940ccd979bdSMark Fasheh */ 941ccd979bdSMark Fasheh void ocfs2_journal_shutdown(struct ocfs2_super *osb) 942ccd979bdSMark Fasheh { 943ccd979bdSMark Fasheh struct ocfs2_journal *journal = NULL; 944ccd979bdSMark Fasheh int status = 0; 945ccd979bdSMark Fasheh struct inode *inode = NULL; 946ccd979bdSMark Fasheh int num_running_trans = 0; 947ccd979bdSMark Fasheh 948ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!osb); 949ccd979bdSMark Fasheh 950ccd979bdSMark Fasheh journal = osb->journal; 951ccd979bdSMark Fasheh if (!journal) 952ccd979bdSMark Fasheh goto done; 953ccd979bdSMark Fasheh 954ccd979bdSMark Fasheh inode = journal->j_inode; 955ccd979bdSMark Fasheh 956ccd979bdSMark Fasheh if (journal->j_state != OCFS2_JOURNAL_LOADED) 957ccd979bdSMark Fasheh goto done; 958ccd979bdSMark Fasheh 9592b4e30fbSJoel Becker /* need to inc inode use count - jbd2_journal_destroy will iput. */ 960ccd979bdSMark Fasheh if (!igrab(inode)) 961ccd979bdSMark Fasheh BUG(); 962ccd979bdSMark Fasheh 963ccd979bdSMark Fasheh num_running_trans = atomic_read(&(osb->journal->j_num_trans)); 964b4107950STao Ma trace_ocfs2_journal_shutdown(num_running_trans); 965ccd979bdSMark Fasheh 966ccd979bdSMark Fasheh /* Do a commit_cache here. It will flush our journal, *and* 967ccd979bdSMark Fasheh * release any locks that are still held. 968ccd979bdSMark Fasheh * set the SHUTDOWN flag and release the trans lock. 969ccd979bdSMark Fasheh * the commit thread will take the trans lock for us below. */ 970ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; 971ccd979bdSMark Fasheh 972ccd979bdSMark Fasheh /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not 973ccd979bdSMark Fasheh * drop the trans_lock (which we want to hold until we 974ccd979bdSMark Fasheh * completely destroy the journal. */ 975ccd979bdSMark Fasheh if (osb->commit_task) { 976ccd979bdSMark Fasheh /* Wait for the commit thread */ 977b4107950STao Ma trace_ocfs2_journal_shutdown_wait(osb->commit_task); 978ccd979bdSMark Fasheh kthread_stop(osb->commit_task); 979ccd979bdSMark Fasheh osb->commit_task = NULL; 980ccd979bdSMark Fasheh } 981ccd979bdSMark Fasheh 982ccd979bdSMark Fasheh BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); 983ccd979bdSMark Fasheh 984c271c5c2SSunil Mushran if (ocfs2_mount_local(osb)) { 9852b4e30fbSJoel Becker jbd2_journal_lock_updates(journal->j_journal); 9862b4e30fbSJoel Becker status = jbd2_journal_flush(journal->j_journal); 9872b4e30fbSJoel Becker jbd2_journal_unlock_updates(journal->j_journal); 988c271c5c2SSunil Mushran if (status < 0) 989c271c5c2SSunil Mushran mlog_errno(status); 990c271c5c2SSunil Mushran } 991c271c5c2SSunil Mushran 992c271c5c2SSunil Mushran if (status == 0) { 993c271c5c2SSunil Mushran /* 994c271c5c2SSunil Mushran * Do not toggle if flush was unsuccessful otherwise 995c271c5c2SSunil Mushran * will leave dirty metadata in a "clean" journal 996c271c5c2SSunil Mushran */ 997539d8264SSunil Mushran status = ocfs2_journal_toggle_dirty(osb, 0, 0); 998ccd979bdSMark Fasheh if (status < 0) 999ccd979bdSMark Fasheh mlog_errno(status); 1000c271c5c2SSunil Mushran } 1001ccd979bdSMark Fasheh 1002ccd979bdSMark Fasheh /* Shutdown the kernel journal system */ 10032b4e30fbSJoel Becker jbd2_journal_destroy(journal->j_journal); 1004ae0dff68SSunil Mushran journal->j_journal = NULL; 1005ccd979bdSMark Fasheh 1006ccd979bdSMark Fasheh OCFS2_I(inode)->ip_open_count--; 1007ccd979bdSMark Fasheh 1008ccd979bdSMark Fasheh /* unlock our journal */ 1009e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 1010ccd979bdSMark Fasheh 1011ccd979bdSMark Fasheh brelse(journal->j_bh); 1012ccd979bdSMark Fasheh journal->j_bh = NULL; 1013ccd979bdSMark Fasheh 1014ccd979bdSMark Fasheh journal->j_state = OCFS2_JOURNAL_FREE; 1015ccd979bdSMark Fasheh 1016ccd979bdSMark Fasheh // up_write(&journal->j_trans_barrier); 1017ccd979bdSMark Fasheh done: 1018ccd979bdSMark Fasheh if (inode) 1019ccd979bdSMark Fasheh iput(inode); 1020ccd979bdSMark Fasheh } 1021ccd979bdSMark Fasheh 1022ccd979bdSMark Fasheh static void ocfs2_clear_journal_error(struct super_block *sb, 1023ccd979bdSMark Fasheh journal_t *journal, 1024ccd979bdSMark Fasheh int slot) 1025ccd979bdSMark Fasheh { 1026ccd979bdSMark Fasheh int olderr; 1027ccd979bdSMark Fasheh 10282b4e30fbSJoel Becker olderr = jbd2_journal_errno(journal); 1029ccd979bdSMark Fasheh if (olderr) { 1030ccd979bdSMark Fasheh mlog(ML_ERROR, "File system error %d recorded in " 1031ccd979bdSMark Fasheh "journal %u.\n", olderr, slot); 1032ccd979bdSMark Fasheh mlog(ML_ERROR, "File system on device %s needs checking.\n", 1033ccd979bdSMark Fasheh sb->s_id); 1034ccd979bdSMark Fasheh 10352b4e30fbSJoel Becker jbd2_journal_ack_err(journal); 10362b4e30fbSJoel Becker jbd2_journal_clear_err(journal); 1037ccd979bdSMark Fasheh } 1038ccd979bdSMark Fasheh } 1039ccd979bdSMark Fasheh 1040539d8264SSunil Mushran int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) 1041ccd979bdSMark Fasheh { 1042ccd979bdSMark Fasheh int status = 0; 1043ccd979bdSMark Fasheh struct ocfs2_super *osb; 1044ccd979bdSMark Fasheh 1045b1f3550fSJulia Lawall BUG_ON(!journal); 1046ccd979bdSMark Fasheh 1047ccd979bdSMark Fasheh osb = journal->j_osb; 1048ccd979bdSMark Fasheh 10492b4e30fbSJoel Becker status = jbd2_journal_load(journal->j_journal); 1050ccd979bdSMark Fasheh if (status < 0) { 1051ccd979bdSMark Fasheh mlog(ML_ERROR, "Failed to load journal!\n"); 1052ccd979bdSMark Fasheh goto done; 1053ccd979bdSMark Fasheh } 1054ccd979bdSMark Fasheh 1055ccd979bdSMark Fasheh ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); 1056ccd979bdSMark Fasheh 1057539d8264SSunil Mushran status = ocfs2_journal_toggle_dirty(osb, 1, replayed); 1058ccd979bdSMark Fasheh if (status < 0) { 1059ccd979bdSMark Fasheh mlog_errno(status); 1060ccd979bdSMark Fasheh goto done; 1061ccd979bdSMark Fasheh } 1062ccd979bdSMark Fasheh 1063ccd979bdSMark Fasheh /* Launch the commit thread */ 1064c271c5c2SSunil Mushran if (!local) { 1065c271c5c2SSunil Mushran osb->commit_task = kthread_run(ocfs2_commit_thread, osb, 1066c271c5c2SSunil Mushran "ocfs2cmt"); 1067ccd979bdSMark Fasheh if (IS_ERR(osb->commit_task)) { 1068ccd979bdSMark Fasheh status = PTR_ERR(osb->commit_task); 1069ccd979bdSMark Fasheh osb->commit_task = NULL; 1070c271c5c2SSunil Mushran mlog(ML_ERROR, "unable to launch ocfs2commit thread, " 1071c271c5c2SSunil Mushran "error=%d", status); 1072ccd979bdSMark Fasheh goto done; 1073ccd979bdSMark Fasheh } 1074c271c5c2SSunil Mushran } else 1075c271c5c2SSunil Mushran osb->commit_task = NULL; 1076ccd979bdSMark Fasheh 1077ccd979bdSMark Fasheh done: 1078ccd979bdSMark Fasheh return status; 1079ccd979bdSMark Fasheh } 1080ccd979bdSMark Fasheh 1081ccd979bdSMark Fasheh 1082ccd979bdSMark Fasheh /* 'full' flag tells us whether we clear out all blocks or if we just 1083ccd979bdSMark Fasheh * mark the journal clean */ 1084ccd979bdSMark Fasheh int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) 1085ccd979bdSMark Fasheh { 1086ccd979bdSMark Fasheh int status; 1087ccd979bdSMark Fasheh 1088ebdec83bSEric Sesterhenn / snakebyte BUG_ON(!journal); 1089ccd979bdSMark Fasheh 10902b4e30fbSJoel Becker status = jbd2_journal_wipe(journal->j_journal, full); 1091ccd979bdSMark Fasheh if (status < 0) { 1092ccd979bdSMark Fasheh mlog_errno(status); 1093ccd979bdSMark Fasheh goto bail; 1094ccd979bdSMark Fasheh } 1095ccd979bdSMark Fasheh 1096539d8264SSunil Mushran status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); 1097ccd979bdSMark Fasheh if (status < 0) 1098ccd979bdSMark Fasheh mlog_errno(status); 1099ccd979bdSMark Fasheh 1100ccd979bdSMark Fasheh bail: 1101ccd979bdSMark Fasheh return status; 1102ccd979bdSMark Fasheh } 1103ccd979bdSMark Fasheh 1104553abd04SJoel Becker static int ocfs2_recovery_completed(struct ocfs2_super *osb) 1105553abd04SJoel Becker { 1106553abd04SJoel Becker int empty; 1107553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 1108553abd04SJoel Becker 1109553abd04SJoel Becker spin_lock(&osb->osb_lock); 1110553abd04SJoel Becker empty = (rm->rm_used == 0); 1111553abd04SJoel Becker spin_unlock(&osb->osb_lock); 1112553abd04SJoel Becker 1113553abd04SJoel Becker return empty; 1114553abd04SJoel Becker } 1115553abd04SJoel Becker 1116553abd04SJoel Becker void ocfs2_wait_for_recovery(struct ocfs2_super *osb) 1117553abd04SJoel Becker { 1118553abd04SJoel Becker wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); 1119553abd04SJoel Becker } 1120553abd04SJoel Becker 1121ccd979bdSMark Fasheh /* 1122ccd979bdSMark Fasheh * JBD Might read a cached version of another nodes journal file. We 1123ccd979bdSMark Fasheh * don't want this as this file changes often and we get no 1124ccd979bdSMark Fasheh * notification on those changes. The only way to be sure that we've 1125ccd979bdSMark Fasheh * got the most up to date version of those blocks then is to force 1126ccd979bdSMark Fasheh * read them off disk. Just searching through the buffer cache won't 1127ccd979bdSMark Fasheh * work as there may be pages backing this file which are still marked 1128ccd979bdSMark Fasheh * up to date. We know things can't change on this file underneath us 1129ccd979bdSMark Fasheh * as we have the lock by now :) 1130ccd979bdSMark Fasheh */ 1131ccd979bdSMark Fasheh static int ocfs2_force_read_journal(struct inode *inode) 1132ccd979bdSMark Fasheh { 1133ccd979bdSMark Fasheh int status = 0; 11344f902c37SMark Fasheh int i; 11358110b073SMark Fasheh u64 v_blkno, p_blkno, p_blocks, num_blocks; 11364f902c37SMark Fasheh #define CONCURRENT_JOURNAL_FILL 32ULL 1137ccd979bdSMark Fasheh struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; 1138ccd979bdSMark Fasheh 1139ccd979bdSMark Fasheh memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); 1140ccd979bdSMark Fasheh 1141f17c20ddSJunxiao Bi num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode)); 1142ccd979bdSMark Fasheh v_blkno = 0; 11438110b073SMark Fasheh while (v_blkno < num_blocks) { 1144ccd979bdSMark Fasheh status = ocfs2_extent_map_get_blocks(inode, v_blkno, 114549cb8d2dSMark Fasheh &p_blkno, &p_blocks, NULL); 1146ccd979bdSMark Fasheh if (status < 0) { 1147ccd979bdSMark Fasheh mlog_errno(status); 1148ccd979bdSMark Fasheh goto bail; 1149ccd979bdSMark Fasheh } 1150ccd979bdSMark Fasheh 1151ccd979bdSMark Fasheh if (p_blocks > CONCURRENT_JOURNAL_FILL) 1152ccd979bdSMark Fasheh p_blocks = CONCURRENT_JOURNAL_FILL; 1153ccd979bdSMark Fasheh 1154dd4a2c2bSMark Fasheh /* We are reading journal data which should not 1155dd4a2c2bSMark Fasheh * be put in the uptodate cache */ 1156da1e9098SJoel Becker status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), 1157da1e9098SJoel Becker p_blkno, p_blocks, bhs); 1158ccd979bdSMark Fasheh if (status < 0) { 1159ccd979bdSMark Fasheh mlog_errno(status); 1160ccd979bdSMark Fasheh goto bail; 1161ccd979bdSMark Fasheh } 1162ccd979bdSMark Fasheh 1163ccd979bdSMark Fasheh for(i = 0; i < p_blocks; i++) { 1164ccd979bdSMark Fasheh brelse(bhs[i]); 1165ccd979bdSMark Fasheh bhs[i] = NULL; 1166ccd979bdSMark Fasheh } 1167ccd979bdSMark Fasheh 1168ccd979bdSMark Fasheh v_blkno += p_blocks; 1169ccd979bdSMark Fasheh } 1170ccd979bdSMark Fasheh 1171ccd979bdSMark Fasheh bail: 1172ccd979bdSMark Fasheh for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) 1173ccd979bdSMark Fasheh brelse(bhs[i]); 1174ccd979bdSMark Fasheh return status; 1175ccd979bdSMark Fasheh } 1176ccd979bdSMark Fasheh 1177ccd979bdSMark Fasheh struct ocfs2_la_recovery_item { 1178ccd979bdSMark Fasheh struct list_head lri_list; 1179ccd979bdSMark Fasheh int lri_slot; 1180ccd979bdSMark Fasheh struct ocfs2_dinode *lri_la_dinode; 1181ccd979bdSMark Fasheh struct ocfs2_dinode *lri_tl_dinode; 11822205363dSJan Kara struct ocfs2_quota_recovery *lri_qrec; 1183ed460cffSJoseph Qi enum ocfs2_orphan_reco_type lri_orphan_reco_type; 1184ccd979bdSMark Fasheh }; 1185ccd979bdSMark Fasheh 1186ccd979bdSMark Fasheh /* Does the second half of the recovery process. By this point, the 1187ccd979bdSMark Fasheh * node is marked clean and can actually be considered recovered, 1188ccd979bdSMark Fasheh * hence it's no longer in the recovery map, but there's still some 1189ccd979bdSMark Fasheh * cleanup we can do which shouldn't happen within the recovery thread 1190ccd979bdSMark Fasheh * as locking in that context becomes very difficult if we are to take 1191ccd979bdSMark Fasheh * recovering nodes into account. 1192ccd979bdSMark Fasheh * 1193ccd979bdSMark Fasheh * NOTE: This function can and will sleep on recovery of other nodes 1194ccd979bdSMark Fasheh * during cluster locking, just like any other ocfs2 process. 1195ccd979bdSMark Fasheh */ 1196c4028958SDavid Howells void ocfs2_complete_recovery(struct work_struct *work) 1197ccd979bdSMark Fasheh { 1198b4107950STao Ma int ret = 0; 1199c4028958SDavid Howells struct ocfs2_journal *journal = 1200c4028958SDavid Howells container_of(work, struct ocfs2_journal, j_recovery_work); 1201c4028958SDavid Howells struct ocfs2_super *osb = journal->j_osb; 1202ccd979bdSMark Fasheh struct ocfs2_dinode *la_dinode, *tl_dinode; 1203800deef3SChristoph Hellwig struct ocfs2_la_recovery_item *item, *n; 12042205363dSJan Kara struct ocfs2_quota_recovery *qrec; 1205ed460cffSJoseph Qi enum ocfs2_orphan_reco_type orphan_reco_type; 1206ccd979bdSMark Fasheh LIST_HEAD(tmp_la_list); 1207ccd979bdSMark Fasheh 1208b4107950STao Ma trace_ocfs2_complete_recovery( 1209b4107950STao Ma (unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno); 1210ccd979bdSMark Fasheh 1211ccd979bdSMark Fasheh spin_lock(&journal->j_lock); 1212ccd979bdSMark Fasheh list_splice_init(&journal->j_la_cleanups, &tmp_la_list); 1213ccd979bdSMark Fasheh spin_unlock(&journal->j_lock); 1214ccd979bdSMark Fasheh 1215800deef3SChristoph Hellwig list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { 1216ccd979bdSMark Fasheh list_del_init(&item->lri_list); 1217ccd979bdSMark Fasheh 121819ece546SJan Kara ocfs2_wait_on_quotas(osb); 121919ece546SJan Kara 1220ccd979bdSMark Fasheh la_dinode = item->lri_la_dinode; 1221b4107950STao Ma tl_dinode = item->lri_tl_dinode; 1222b4107950STao Ma qrec = item->lri_qrec; 1223ed460cffSJoseph Qi orphan_reco_type = item->lri_orphan_reco_type; 1224ccd979bdSMark Fasheh 1225b4107950STao Ma trace_ocfs2_complete_recovery_slot(item->lri_slot, 1226b4107950STao Ma la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0, 1227b4107950STao Ma tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0, 1228b4107950STao Ma qrec); 1229b4107950STao Ma 1230b4107950STao Ma if (la_dinode) { 1231ccd979bdSMark Fasheh ret = ocfs2_complete_local_alloc_recovery(osb, 1232ccd979bdSMark Fasheh la_dinode); 1233ccd979bdSMark Fasheh if (ret < 0) 1234ccd979bdSMark Fasheh mlog_errno(ret); 1235ccd979bdSMark Fasheh 1236ccd979bdSMark Fasheh kfree(la_dinode); 1237ccd979bdSMark Fasheh } 1238ccd979bdSMark Fasheh 1239ccd979bdSMark Fasheh if (tl_dinode) { 1240ccd979bdSMark Fasheh ret = ocfs2_complete_truncate_log_recovery(osb, 1241ccd979bdSMark Fasheh tl_dinode); 1242ccd979bdSMark Fasheh if (ret < 0) 1243ccd979bdSMark Fasheh mlog_errno(ret); 1244ccd979bdSMark Fasheh 1245ccd979bdSMark Fasheh kfree(tl_dinode); 1246ccd979bdSMark Fasheh } 1247ccd979bdSMark Fasheh 1248ed460cffSJoseph Qi ret = ocfs2_recover_orphans(osb, item->lri_slot, 1249ed460cffSJoseph Qi orphan_reco_type); 1250ccd979bdSMark Fasheh if (ret < 0) 1251ccd979bdSMark Fasheh mlog_errno(ret); 1252ccd979bdSMark Fasheh 12532205363dSJan Kara if (qrec) { 12542205363dSJan Kara ret = ocfs2_finish_quota_recovery(osb, qrec, 12552205363dSJan Kara item->lri_slot); 12562205363dSJan Kara if (ret < 0) 12572205363dSJan Kara mlog_errno(ret); 12582205363dSJan Kara /* Recovery info is already freed now */ 12592205363dSJan Kara } 12602205363dSJan Kara 1261ccd979bdSMark Fasheh kfree(item); 1262ccd979bdSMark Fasheh } 1263ccd979bdSMark Fasheh 1264b4107950STao Ma trace_ocfs2_complete_recovery_end(ret); 1265ccd979bdSMark Fasheh } 1266ccd979bdSMark Fasheh 1267ccd979bdSMark Fasheh /* NOTE: This function always eats your references to la_dinode and 1268ccd979bdSMark Fasheh * tl_dinode, either manually on error, or by passing them to 1269ccd979bdSMark Fasheh * ocfs2_complete_recovery */ 1270ccd979bdSMark Fasheh static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, 1271ccd979bdSMark Fasheh int slot_num, 1272ccd979bdSMark Fasheh struct ocfs2_dinode *la_dinode, 12732205363dSJan Kara struct ocfs2_dinode *tl_dinode, 1274ed460cffSJoseph Qi struct ocfs2_quota_recovery *qrec, 1275ed460cffSJoseph Qi enum ocfs2_orphan_reco_type orphan_reco_type) 1276ccd979bdSMark Fasheh { 1277ccd979bdSMark Fasheh struct ocfs2_la_recovery_item *item; 1278ccd979bdSMark Fasheh 1279afae00abSSunil Mushran item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); 1280ccd979bdSMark Fasheh if (!item) { 1281ccd979bdSMark Fasheh /* Though we wish to avoid it, we are in fact safe in 1282ccd979bdSMark Fasheh * skipping local alloc cleanup as fsck.ocfs2 is more 1283ccd979bdSMark Fasheh * than capable of reclaiming unused space. */ 1284ccd979bdSMark Fasheh kfree(la_dinode); 1285ccd979bdSMark Fasheh kfree(tl_dinode); 1286ccd979bdSMark Fasheh 12872205363dSJan Kara if (qrec) 12882205363dSJan Kara ocfs2_free_quota_recovery(qrec); 12892205363dSJan Kara 1290ccd979bdSMark Fasheh mlog_errno(-ENOMEM); 1291ccd979bdSMark Fasheh return; 1292ccd979bdSMark Fasheh } 1293ccd979bdSMark Fasheh 1294ccd979bdSMark Fasheh INIT_LIST_HEAD(&item->lri_list); 1295ccd979bdSMark Fasheh item->lri_la_dinode = la_dinode; 1296ccd979bdSMark Fasheh item->lri_slot = slot_num; 1297ccd979bdSMark Fasheh item->lri_tl_dinode = tl_dinode; 12982205363dSJan Kara item->lri_qrec = qrec; 1299ed460cffSJoseph Qi item->lri_orphan_reco_type = orphan_reco_type; 1300ccd979bdSMark Fasheh 1301ccd979bdSMark Fasheh spin_lock(&journal->j_lock); 1302ccd979bdSMark Fasheh list_add_tail(&item->lri_list, &journal->j_la_cleanups); 1303ccd979bdSMark Fasheh queue_work(ocfs2_wq, &journal->j_recovery_work); 1304ccd979bdSMark Fasheh spin_unlock(&journal->j_lock); 1305ccd979bdSMark Fasheh } 1306ccd979bdSMark Fasheh 1307ccd979bdSMark Fasheh /* Called by the mount code to queue recovery the last part of 13089140db04SSrinivas Eeda * recovery for it's own and offline slot(s). */ 1309ccd979bdSMark Fasheh void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) 1310ccd979bdSMark Fasheh { 1311ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 1312ccd979bdSMark Fasheh 131310b3dd76SSunil Mushran if (ocfs2_is_hard_readonly(osb)) 131410b3dd76SSunil Mushran return; 131510b3dd76SSunil Mushran 13169140db04SSrinivas Eeda /* No need to queue up our truncate_log as regular cleanup will catch 13179140db04SSrinivas Eeda * that */ 13189140db04SSrinivas Eeda ocfs2_queue_recovery_completion(journal, osb->slot_num, 1319ed460cffSJoseph Qi osb->local_alloc_copy, NULL, NULL, 1320ed460cffSJoseph Qi ORPHAN_NEED_TRUNCATE); 1321ccd979bdSMark Fasheh ocfs2_schedule_truncate_log_flush(osb, 0); 1322ccd979bdSMark Fasheh 1323ccd979bdSMark Fasheh osb->local_alloc_copy = NULL; 1324ccd979bdSMark Fasheh osb->dirty = 0; 13259140db04SSrinivas Eeda 13269140db04SSrinivas Eeda /* queue to recover orphan slots for all offline slots */ 13279140db04SSrinivas Eeda ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); 1328ed460cffSJoseph Qi ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); 13299140db04SSrinivas Eeda ocfs2_free_replay_slots(osb); 1330ccd979bdSMark Fasheh } 1331ccd979bdSMark Fasheh 13322205363dSJan Kara void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) 13332205363dSJan Kara { 13342205363dSJan Kara if (osb->quota_rec) { 13352205363dSJan Kara ocfs2_queue_recovery_completion(osb->journal, 13362205363dSJan Kara osb->slot_num, 13372205363dSJan Kara NULL, 13382205363dSJan Kara NULL, 1339ed460cffSJoseph Qi osb->quota_rec, 1340ed460cffSJoseph Qi ORPHAN_NEED_TRUNCATE); 13412205363dSJan Kara osb->quota_rec = NULL; 13422205363dSJan Kara } 13432205363dSJan Kara } 13442205363dSJan Kara 1345ccd979bdSMark Fasheh static int __ocfs2_recovery_thread(void *arg) 1346ccd979bdSMark Fasheh { 13472205363dSJan Kara int status, node_num, slot_num; 1348ccd979bdSMark Fasheh struct ocfs2_super *osb = arg; 1349553abd04SJoel Becker struct ocfs2_recovery_map *rm = osb->recovery_map; 13502205363dSJan Kara int *rm_quota = NULL; 13512205363dSJan Kara int rm_quota_used = 0, i; 13522205363dSJan Kara struct ocfs2_quota_recovery *qrec; 1353ccd979bdSMark Fasheh 1354ccd979bdSMark Fasheh status = ocfs2_wait_on_mount(osb); 1355ccd979bdSMark Fasheh if (status < 0) { 1356ccd979bdSMark Fasheh goto bail; 1357ccd979bdSMark Fasheh } 1358ccd979bdSMark Fasheh 13592205363dSJan Kara rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS); 13602205363dSJan Kara if (!rm_quota) { 13612205363dSJan Kara status = -ENOMEM; 13622205363dSJan Kara goto bail; 13632205363dSJan Kara } 1364ccd979bdSMark Fasheh restart: 1365ccd979bdSMark Fasheh status = ocfs2_super_lock(osb, 1); 1366ccd979bdSMark Fasheh if (status < 0) { 1367ccd979bdSMark Fasheh mlog_errno(status); 1368ccd979bdSMark Fasheh goto bail; 1369ccd979bdSMark Fasheh } 1370ccd979bdSMark Fasheh 13719140db04SSrinivas Eeda status = ocfs2_compute_replay_slots(osb); 13729140db04SSrinivas Eeda if (status < 0) 13739140db04SSrinivas Eeda mlog_errno(status); 13749140db04SSrinivas Eeda 13759140db04SSrinivas Eeda /* queue recovery for our own slot */ 13769140db04SSrinivas Eeda ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, 1377ed460cffSJoseph Qi NULL, NULL, ORPHAN_NO_NEED_TRUNCATE); 13789140db04SSrinivas Eeda 1379553abd04SJoel Becker spin_lock(&osb->osb_lock); 1380553abd04SJoel Becker while (rm->rm_used) { 1381553abd04SJoel Becker /* It's always safe to remove entry zero, as we won't 1382553abd04SJoel Becker * clear it until ocfs2_recover_node() has succeeded. */ 1383553abd04SJoel Becker node_num = rm->rm_entries[0]; 1384553abd04SJoel Becker spin_unlock(&osb->osb_lock); 13852205363dSJan Kara slot_num = ocfs2_node_num_to_slot(osb, node_num); 1386b4107950STao Ma trace_ocfs2_recovery_thread_node(node_num, slot_num); 13872205363dSJan Kara if (slot_num == -ENOENT) { 13882205363dSJan Kara status = 0; 13892205363dSJan Kara goto skip_recovery; 13902205363dSJan Kara } 1391ccd979bdSMark Fasheh 13922205363dSJan Kara /* It is a bit subtle with quota recovery. We cannot do it 13932205363dSJan Kara * immediately because we have to obtain cluster locks from 13942205363dSJan Kara * quota files and we also don't want to just skip it because 13952205363dSJan Kara * then quota usage would be out of sync until some node takes 13962205363dSJan Kara * the slot. So we remember which nodes need quota recovery 13972205363dSJan Kara * and when everything else is done, we recover quotas. */ 13982205363dSJan Kara for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++); 13992205363dSJan Kara if (i == rm_quota_used) 14002205363dSJan Kara rm_quota[rm_quota_used++] = slot_num; 14012205363dSJan Kara 14022205363dSJan Kara status = ocfs2_recover_node(osb, node_num, slot_num); 14032205363dSJan Kara skip_recovery: 1404553abd04SJoel Becker if (!status) { 1405553abd04SJoel Becker ocfs2_recovery_map_clear(osb, node_num); 1406553abd04SJoel Becker } else { 1407ccd979bdSMark Fasheh mlog(ML_ERROR, 1408ccd979bdSMark Fasheh "Error %d recovering node %d on device (%u,%u)!\n", 1409ccd979bdSMark Fasheh status, node_num, 1410ccd979bdSMark Fasheh MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); 1411ccd979bdSMark Fasheh mlog(ML_ERROR, "Volume requires unmount.\n"); 1412ccd979bdSMark Fasheh } 1413ccd979bdSMark Fasheh 1414553abd04SJoel Becker spin_lock(&osb->osb_lock); 1415ccd979bdSMark Fasheh } 1416553abd04SJoel Becker spin_unlock(&osb->osb_lock); 1417b4107950STao Ma trace_ocfs2_recovery_thread_end(status); 1418553abd04SJoel Becker 1419539d8264SSunil Mushran /* Refresh all journal recovery generations from disk */ 1420539d8264SSunil Mushran status = ocfs2_check_journals_nolocks(osb); 1421539d8264SSunil Mushran status = (status == -EROFS) ? 0 : status; 1422539d8264SSunil Mushran if (status < 0) 1423539d8264SSunil Mushran mlog_errno(status); 1424539d8264SSunil Mushran 14252205363dSJan Kara /* Now it is right time to recover quotas... We have to do this under 14262205363dSJan Kara * superblock lock so that no one can start using the slot (and crash) 14272205363dSJan Kara * before we recover it */ 14282205363dSJan Kara for (i = 0; i < rm_quota_used; i++) { 14292205363dSJan Kara qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); 14302205363dSJan Kara if (IS_ERR(qrec)) { 14312205363dSJan Kara status = PTR_ERR(qrec); 14322205363dSJan Kara mlog_errno(status); 14332205363dSJan Kara continue; 14342205363dSJan Kara } 14352205363dSJan Kara ocfs2_queue_recovery_completion(osb->journal, rm_quota[i], 1436ed460cffSJoseph Qi NULL, NULL, qrec, 1437ed460cffSJoseph Qi ORPHAN_NEED_TRUNCATE); 14382205363dSJan Kara } 14392205363dSJan Kara 1440ccd979bdSMark Fasheh ocfs2_super_unlock(osb, 1); 1441ccd979bdSMark Fasheh 14429140db04SSrinivas Eeda /* queue recovery for offline slots */ 1443ed460cffSJoseph Qi ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE); 1444ccd979bdSMark Fasheh 1445ccd979bdSMark Fasheh bail: 1446c74ec2f7SArjan van de Ven mutex_lock(&osb->recovery_lock); 1447553abd04SJoel Becker if (!status && !ocfs2_recovery_completed(osb)) { 1448c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 1449ccd979bdSMark Fasheh goto restart; 1450ccd979bdSMark Fasheh } 1451ccd979bdSMark Fasheh 14529140db04SSrinivas Eeda ocfs2_free_replay_slots(osb); 1453ccd979bdSMark Fasheh osb->recovery_thread_task = NULL; 1454ccd979bdSMark Fasheh mb(); /* sync with ocfs2_recovery_thread_running */ 1455ccd979bdSMark Fasheh wake_up(&osb->recovery_event); 1456ccd979bdSMark Fasheh 1457c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 1458ccd979bdSMark Fasheh 14592205363dSJan Kara kfree(rm_quota); 14602205363dSJan Kara 1461ccd979bdSMark Fasheh /* no one is callint kthread_stop() for us so the kthread() api 1462ccd979bdSMark Fasheh * requires that we call do_exit(). And it isn't exported, but 1463ccd979bdSMark Fasheh * complete_and_exit() seems to be a minimal wrapper around it. */ 1464ccd979bdSMark Fasheh complete_and_exit(NULL, status); 1465ccd979bdSMark Fasheh } 1466ccd979bdSMark Fasheh 1467ccd979bdSMark Fasheh void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) 1468ccd979bdSMark Fasheh { 1469c74ec2f7SArjan van de Ven mutex_lock(&osb->recovery_lock); 1470b4107950STao Ma 1471b4107950STao Ma trace_ocfs2_recovery_thread(node_num, osb->node_num, 1472b4107950STao Ma osb->disable_recovery, osb->recovery_thread_task, 1473b4107950STao Ma osb->disable_recovery ? 1474b4107950STao Ma -1 : ocfs2_recovery_map_set(osb, node_num)); 1475b4107950STao Ma 1476ccd979bdSMark Fasheh if (osb->disable_recovery) 1477ccd979bdSMark Fasheh goto out; 1478ccd979bdSMark Fasheh 1479ccd979bdSMark Fasheh if (osb->recovery_thread_task) 1480ccd979bdSMark Fasheh goto out; 1481ccd979bdSMark Fasheh 1482ccd979bdSMark Fasheh osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, 148378427043SMark Fasheh "ocfs2rec"); 1484ccd979bdSMark Fasheh if (IS_ERR(osb->recovery_thread_task)) { 1485ccd979bdSMark Fasheh mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); 1486ccd979bdSMark Fasheh osb->recovery_thread_task = NULL; 1487ccd979bdSMark Fasheh } 1488ccd979bdSMark Fasheh 1489ccd979bdSMark Fasheh out: 1490c74ec2f7SArjan van de Ven mutex_unlock(&osb->recovery_lock); 1491ccd979bdSMark Fasheh wake_up(&osb->recovery_event); 1492ccd979bdSMark Fasheh } 1493ccd979bdSMark Fasheh 1494539d8264SSunil Mushran static int ocfs2_read_journal_inode(struct ocfs2_super *osb, 1495539d8264SSunil Mushran int slot_num, 1496539d8264SSunil Mushran struct buffer_head **bh, 1497539d8264SSunil Mushran struct inode **ret_inode) 1498539d8264SSunil Mushran { 1499539d8264SSunil Mushran int status = -EACCES; 1500539d8264SSunil Mushran struct inode *inode = NULL; 1501539d8264SSunil Mushran 1502539d8264SSunil Mushran BUG_ON(slot_num >= osb->max_slots); 1503539d8264SSunil Mushran 1504539d8264SSunil Mushran inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 1505539d8264SSunil Mushran slot_num); 1506539d8264SSunil Mushran if (!inode || is_bad_inode(inode)) { 1507539d8264SSunil Mushran mlog_errno(status); 1508539d8264SSunil Mushran goto bail; 1509539d8264SSunil Mushran } 1510539d8264SSunil Mushran SET_INODE_JOURNAL(inode); 1511539d8264SSunil Mushran 1512b657c95cSJoel Becker status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); 1513539d8264SSunil Mushran if (status < 0) { 1514539d8264SSunil Mushran mlog_errno(status); 1515539d8264SSunil Mushran goto bail; 1516539d8264SSunil Mushran } 1517539d8264SSunil Mushran 1518539d8264SSunil Mushran status = 0; 1519539d8264SSunil Mushran 1520539d8264SSunil Mushran bail: 1521539d8264SSunil Mushran if (inode) { 1522539d8264SSunil Mushran if (status || !ret_inode) 1523539d8264SSunil Mushran iput(inode); 1524539d8264SSunil Mushran else 1525539d8264SSunil Mushran *ret_inode = inode; 1526539d8264SSunil Mushran } 1527539d8264SSunil Mushran return status; 1528539d8264SSunil Mushran } 1529539d8264SSunil Mushran 1530ccd979bdSMark Fasheh /* Does the actual journal replay and marks the journal inode as 1531ccd979bdSMark Fasheh * clean. Will only replay if the journal inode is marked dirty. */ 1532ccd979bdSMark Fasheh static int ocfs2_replay_journal(struct ocfs2_super *osb, 1533ccd979bdSMark Fasheh int node_num, 1534ccd979bdSMark Fasheh int slot_num) 1535ccd979bdSMark Fasheh { 1536ccd979bdSMark Fasheh int status; 1537ccd979bdSMark Fasheh int got_lock = 0; 1538ccd979bdSMark Fasheh unsigned int flags; 1539ccd979bdSMark Fasheh struct inode *inode = NULL; 1540ccd979bdSMark Fasheh struct ocfs2_dinode *fe; 1541ccd979bdSMark Fasheh journal_t *journal = NULL; 1542ccd979bdSMark Fasheh struct buffer_head *bh = NULL; 1543539d8264SSunil Mushran u32 slot_reco_gen; 1544ccd979bdSMark Fasheh 1545539d8264SSunil Mushran status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); 1546539d8264SSunil Mushran if (status) { 1547ccd979bdSMark Fasheh mlog_errno(status); 1548ccd979bdSMark Fasheh goto done; 1549ccd979bdSMark Fasheh } 1550539d8264SSunil Mushran 1551539d8264SSunil Mushran fe = (struct ocfs2_dinode *)bh->b_data; 1552539d8264SSunil Mushran slot_reco_gen = ocfs2_get_recovery_generation(fe); 1553539d8264SSunil Mushran brelse(bh); 1554539d8264SSunil Mushran bh = NULL; 1555539d8264SSunil Mushran 1556539d8264SSunil Mushran /* 1557539d8264SSunil Mushran * As the fs recovery is asynchronous, there is a small chance that 1558539d8264SSunil Mushran * another node mounted (and recovered) the slot before the recovery 1559539d8264SSunil Mushran * thread could get the lock. To handle that, we dirty read the journal 1560539d8264SSunil Mushran * inode for that slot to get the recovery generation. If it is 1561539d8264SSunil Mushran * different than what we expected, the slot has been recovered. 1562539d8264SSunil Mushran * If not, it needs recovery. 1563539d8264SSunil Mushran */ 1564539d8264SSunil Mushran if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { 1565b4107950STao Ma trace_ocfs2_replay_journal_recovered(slot_num, 1566539d8264SSunil Mushran osb->slot_recovery_generations[slot_num], slot_reco_gen); 1567539d8264SSunil Mushran osb->slot_recovery_generations[slot_num] = slot_reco_gen; 1568539d8264SSunil Mushran status = -EBUSY; 1569ccd979bdSMark Fasheh goto done; 1570ccd979bdSMark Fasheh } 1571539d8264SSunil Mushran 1572539d8264SSunil Mushran /* Continue with recovery as the journal has not yet been recovered */ 1573ccd979bdSMark Fasheh 1574e63aecb6SMark Fasheh status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); 1575ccd979bdSMark Fasheh if (status < 0) { 1576b4107950STao Ma trace_ocfs2_replay_journal_lock_err(status); 1577ccd979bdSMark Fasheh if (status != -ERESTARTSYS) 1578ccd979bdSMark Fasheh mlog(ML_ERROR, "Could not lock journal!\n"); 1579ccd979bdSMark Fasheh goto done; 1580ccd979bdSMark Fasheh } 1581ccd979bdSMark Fasheh got_lock = 1; 1582ccd979bdSMark Fasheh 1583ccd979bdSMark Fasheh fe = (struct ocfs2_dinode *) bh->b_data; 1584ccd979bdSMark Fasheh 1585ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 1586539d8264SSunil Mushran slot_reco_gen = ocfs2_get_recovery_generation(fe); 1587ccd979bdSMark Fasheh 1588ccd979bdSMark Fasheh if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { 1589b4107950STao Ma trace_ocfs2_replay_journal_skip(node_num); 1590539d8264SSunil Mushran /* Refresh recovery generation for the slot */ 1591539d8264SSunil Mushran osb->slot_recovery_generations[slot_num] = slot_reco_gen; 1592ccd979bdSMark Fasheh goto done; 1593ccd979bdSMark Fasheh } 1594ccd979bdSMark Fasheh 15959140db04SSrinivas Eeda /* we need to run complete recovery for offline orphan slots */ 15969140db04SSrinivas Eeda ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); 15979140db04SSrinivas Eeda 1598619c200dSSunil Mushran printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\ 1599619c200dSSunil Mushran "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), 1600619c200dSSunil Mushran MINOR(osb->sb->s_dev)); 1601ccd979bdSMark Fasheh 1602ccd979bdSMark Fasheh OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); 1603ccd979bdSMark Fasheh 1604ccd979bdSMark Fasheh status = ocfs2_force_read_journal(inode); 1605ccd979bdSMark Fasheh if (status < 0) { 1606ccd979bdSMark Fasheh mlog_errno(status); 1607ccd979bdSMark Fasheh goto done; 1608ccd979bdSMark Fasheh } 1609ccd979bdSMark Fasheh 16102b4e30fbSJoel Becker journal = jbd2_journal_init_inode(inode); 1611ccd979bdSMark Fasheh if (journal == NULL) { 1612ccd979bdSMark Fasheh mlog(ML_ERROR, "Linux journal layer error\n"); 1613ccd979bdSMark Fasheh status = -EIO; 1614ccd979bdSMark Fasheh goto done; 1615ccd979bdSMark Fasheh } 1616ccd979bdSMark Fasheh 16172b4e30fbSJoel Becker status = jbd2_journal_load(journal); 1618ccd979bdSMark Fasheh if (status < 0) { 1619ccd979bdSMark Fasheh mlog_errno(status); 1620ccd979bdSMark Fasheh if (!igrab(inode)) 1621ccd979bdSMark Fasheh BUG(); 16222b4e30fbSJoel Becker jbd2_journal_destroy(journal); 1623ccd979bdSMark Fasheh goto done; 1624ccd979bdSMark Fasheh } 1625ccd979bdSMark Fasheh 1626ccd979bdSMark Fasheh ocfs2_clear_journal_error(osb->sb, journal, slot_num); 1627ccd979bdSMark Fasheh 1628ccd979bdSMark Fasheh /* wipe the journal */ 16292b4e30fbSJoel Becker jbd2_journal_lock_updates(journal); 16302b4e30fbSJoel Becker status = jbd2_journal_flush(journal); 16312b4e30fbSJoel Becker jbd2_journal_unlock_updates(journal); 1632ccd979bdSMark Fasheh if (status < 0) 1633ccd979bdSMark Fasheh mlog_errno(status); 1634ccd979bdSMark Fasheh 1635ccd979bdSMark Fasheh /* This will mark the node clean */ 1636ccd979bdSMark Fasheh flags = le32_to_cpu(fe->id1.journal1.ij_flags); 1637ccd979bdSMark Fasheh flags &= ~OCFS2_JOURNAL_DIRTY_FL; 1638ccd979bdSMark Fasheh fe->id1.journal1.ij_flags = cpu_to_le32(flags); 1639ccd979bdSMark Fasheh 1640539d8264SSunil Mushran /* Increment recovery generation to indicate successful recovery */ 1641539d8264SSunil Mushran ocfs2_bump_recovery_generation(fe); 1642539d8264SSunil Mushran osb->slot_recovery_generations[slot_num] = 1643539d8264SSunil Mushran ocfs2_get_recovery_generation(fe); 1644539d8264SSunil Mushran 164513723d00SJoel Becker ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); 16468cb471e8SJoel Becker status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); 1647ccd979bdSMark Fasheh if (status < 0) 1648ccd979bdSMark Fasheh mlog_errno(status); 1649ccd979bdSMark Fasheh 1650ccd979bdSMark Fasheh if (!igrab(inode)) 1651ccd979bdSMark Fasheh BUG(); 1652ccd979bdSMark Fasheh 16532b4e30fbSJoel Becker jbd2_journal_destroy(journal); 1654ccd979bdSMark Fasheh 1655619c200dSSunil Mushran printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\ 1656619c200dSSunil Mushran "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), 1657619c200dSSunil Mushran MINOR(osb->sb->s_dev)); 1658ccd979bdSMark Fasheh done: 1659ccd979bdSMark Fasheh /* drop the lock on this nodes journal */ 1660ccd979bdSMark Fasheh if (got_lock) 1661e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 1662ccd979bdSMark Fasheh 1663ccd979bdSMark Fasheh if (inode) 1664ccd979bdSMark Fasheh iput(inode); 1665ccd979bdSMark Fasheh 1666ccd979bdSMark Fasheh brelse(bh); 1667ccd979bdSMark Fasheh 1668ccd979bdSMark Fasheh return status; 1669ccd979bdSMark Fasheh } 1670ccd979bdSMark Fasheh 1671ccd979bdSMark Fasheh /* 1672ccd979bdSMark Fasheh * Do the most important parts of node recovery: 1673ccd979bdSMark Fasheh * - Replay it's journal 1674ccd979bdSMark Fasheh * - Stamp a clean local allocator file 1675ccd979bdSMark Fasheh * - Stamp a clean truncate log 1676ccd979bdSMark Fasheh * - Mark the node clean 1677ccd979bdSMark Fasheh * 1678ccd979bdSMark Fasheh * If this function completes without error, a node in OCFS2 can be 1679ccd979bdSMark Fasheh * said to have been safely recovered. As a result, failure during the 1680ccd979bdSMark Fasheh * second part of a nodes recovery process (local alloc recovery) is 1681ccd979bdSMark Fasheh * far less concerning. 1682ccd979bdSMark Fasheh */ 1683ccd979bdSMark Fasheh static int ocfs2_recover_node(struct ocfs2_super *osb, 16842205363dSJan Kara int node_num, int slot_num) 1685ccd979bdSMark Fasheh { 1686ccd979bdSMark Fasheh int status = 0; 1687ccd979bdSMark Fasheh struct ocfs2_dinode *la_copy = NULL; 1688ccd979bdSMark Fasheh struct ocfs2_dinode *tl_copy = NULL; 1689ccd979bdSMark Fasheh 1690b4107950STao Ma trace_ocfs2_recover_node(node_num, slot_num, osb->node_num); 1691ccd979bdSMark Fasheh 1692ccd979bdSMark Fasheh /* Should not ever be called to recover ourselves -- in that 1693ccd979bdSMark Fasheh * case we should've called ocfs2_journal_load instead. */ 1694ebdec83bSEric Sesterhenn / snakebyte BUG_ON(osb->node_num == node_num); 1695ccd979bdSMark Fasheh 1696ccd979bdSMark Fasheh status = ocfs2_replay_journal(osb, node_num, slot_num); 1697ccd979bdSMark Fasheh if (status < 0) { 1698539d8264SSunil Mushran if (status == -EBUSY) { 1699b4107950STao Ma trace_ocfs2_recover_node_skip(slot_num, node_num); 1700539d8264SSunil Mushran status = 0; 1701539d8264SSunil Mushran goto done; 1702539d8264SSunil Mushran } 1703ccd979bdSMark Fasheh mlog_errno(status); 1704ccd979bdSMark Fasheh goto done; 1705ccd979bdSMark Fasheh } 1706ccd979bdSMark Fasheh 1707ccd979bdSMark Fasheh /* Stamp a clean local alloc file AFTER recovering the journal... */ 1708ccd979bdSMark Fasheh status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); 1709ccd979bdSMark Fasheh if (status < 0) { 1710ccd979bdSMark Fasheh mlog_errno(status); 1711ccd979bdSMark Fasheh goto done; 1712ccd979bdSMark Fasheh } 1713ccd979bdSMark Fasheh 1714ccd979bdSMark Fasheh /* An error from begin_truncate_log_recovery is not 1715ccd979bdSMark Fasheh * serious enough to warrant halting the rest of 1716ccd979bdSMark Fasheh * recovery. */ 1717ccd979bdSMark Fasheh status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); 1718ccd979bdSMark Fasheh if (status < 0) 1719ccd979bdSMark Fasheh mlog_errno(status); 1720ccd979bdSMark Fasheh 1721ccd979bdSMark Fasheh /* Likewise, this would be a strange but ultimately not so 1722ccd979bdSMark Fasheh * harmful place to get an error... */ 17238e8a4603SMark Fasheh status = ocfs2_clear_slot(osb, slot_num); 1724ccd979bdSMark Fasheh if (status < 0) 1725ccd979bdSMark Fasheh mlog_errno(status); 1726ccd979bdSMark Fasheh 1727ccd979bdSMark Fasheh /* This will kfree the memory pointed to by la_copy and tl_copy */ 1728ccd979bdSMark Fasheh ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, 1729ed460cffSJoseph Qi tl_copy, NULL, ORPHAN_NEED_TRUNCATE); 1730ccd979bdSMark Fasheh 1731ccd979bdSMark Fasheh status = 0; 1732ccd979bdSMark Fasheh done: 1733ccd979bdSMark Fasheh 1734ccd979bdSMark Fasheh return status; 1735ccd979bdSMark Fasheh } 1736ccd979bdSMark Fasheh 1737ccd979bdSMark Fasheh /* Test node liveness by trylocking his journal. If we get the lock, 1738ccd979bdSMark Fasheh * we drop it here. Return 0 if we got the lock, -EAGAIN if node is 1739ccd979bdSMark Fasheh * still alive (we couldn't get the lock) and < 0 on error. */ 1740ccd979bdSMark Fasheh static int ocfs2_trylock_journal(struct ocfs2_super *osb, 1741ccd979bdSMark Fasheh int slot_num) 1742ccd979bdSMark Fasheh { 1743ccd979bdSMark Fasheh int status, flags; 1744ccd979bdSMark Fasheh struct inode *inode = NULL; 1745ccd979bdSMark Fasheh 1746ccd979bdSMark Fasheh inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, 1747ccd979bdSMark Fasheh slot_num); 1748ccd979bdSMark Fasheh if (inode == NULL) { 1749ccd979bdSMark Fasheh mlog(ML_ERROR, "access error\n"); 1750ccd979bdSMark Fasheh status = -EACCES; 1751ccd979bdSMark Fasheh goto bail; 1752ccd979bdSMark Fasheh } 1753ccd979bdSMark Fasheh if (is_bad_inode(inode)) { 1754ccd979bdSMark Fasheh mlog(ML_ERROR, "access error (bad inode)\n"); 1755ccd979bdSMark Fasheh iput(inode); 1756ccd979bdSMark Fasheh inode = NULL; 1757ccd979bdSMark Fasheh status = -EACCES; 1758ccd979bdSMark Fasheh goto bail; 1759ccd979bdSMark Fasheh } 1760ccd979bdSMark Fasheh SET_INODE_JOURNAL(inode); 1761ccd979bdSMark Fasheh 1762ccd979bdSMark Fasheh flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; 1763e63aecb6SMark Fasheh status = ocfs2_inode_lock_full(inode, NULL, 1, flags); 1764ccd979bdSMark Fasheh if (status < 0) { 1765ccd979bdSMark Fasheh if (status != -EAGAIN) 1766ccd979bdSMark Fasheh mlog_errno(status); 1767ccd979bdSMark Fasheh goto bail; 1768ccd979bdSMark Fasheh } 1769ccd979bdSMark Fasheh 1770e63aecb6SMark Fasheh ocfs2_inode_unlock(inode, 1); 1771ccd979bdSMark Fasheh bail: 1772ccd979bdSMark Fasheh if (inode) 1773ccd979bdSMark Fasheh iput(inode); 1774ccd979bdSMark Fasheh 1775ccd979bdSMark Fasheh return status; 1776ccd979bdSMark Fasheh } 1777ccd979bdSMark Fasheh 1778ccd979bdSMark Fasheh /* Call this underneath ocfs2_super_lock. It also assumes that the 1779ccd979bdSMark Fasheh * slot info struct has been updated from disk. */ 1780ccd979bdSMark Fasheh int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) 1781ccd979bdSMark Fasheh { 1782d85b20e4SJoel Becker unsigned int node_num; 1783d85b20e4SJoel Becker int status, i; 1784a1af7d15SMark Fasheh u32 gen; 1785539d8264SSunil Mushran struct buffer_head *bh = NULL; 1786539d8264SSunil Mushran struct ocfs2_dinode *di; 1787ccd979bdSMark Fasheh 1788ccd979bdSMark Fasheh /* This is called with the super block cluster lock, so we 1789ccd979bdSMark Fasheh * know that the slot map can't change underneath us. */ 1790ccd979bdSMark Fasheh 1791d85b20e4SJoel Becker for (i = 0; i < osb->max_slots; i++) { 1792539d8264SSunil Mushran /* Read journal inode to get the recovery generation */ 1793539d8264SSunil Mushran status = ocfs2_read_journal_inode(osb, i, &bh, NULL); 1794539d8264SSunil Mushran if (status) { 1795539d8264SSunil Mushran mlog_errno(status); 1796539d8264SSunil Mushran goto bail; 1797539d8264SSunil Mushran } 1798539d8264SSunil Mushran di = (struct ocfs2_dinode *)bh->b_data; 1799a1af7d15SMark Fasheh gen = ocfs2_get_recovery_generation(di); 1800539d8264SSunil Mushran brelse(bh); 1801539d8264SSunil Mushran bh = NULL; 1802539d8264SSunil Mushran 1803a1af7d15SMark Fasheh spin_lock(&osb->osb_lock); 1804a1af7d15SMark Fasheh osb->slot_recovery_generations[i] = gen; 1805a1af7d15SMark Fasheh 1806b4107950STao Ma trace_ocfs2_mark_dead_nodes(i, 1807539d8264SSunil Mushran osb->slot_recovery_generations[i]); 1808539d8264SSunil Mushran 1809a1af7d15SMark Fasheh if (i == osb->slot_num) { 1810a1af7d15SMark Fasheh spin_unlock(&osb->osb_lock); 1811ccd979bdSMark Fasheh continue; 1812a1af7d15SMark Fasheh } 1813d85b20e4SJoel Becker 1814d85b20e4SJoel Becker status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); 1815a1af7d15SMark Fasheh if (status == -ENOENT) { 1816a1af7d15SMark Fasheh spin_unlock(&osb->osb_lock); 1817ccd979bdSMark Fasheh continue; 1818a1af7d15SMark Fasheh } 1819ccd979bdSMark Fasheh 1820a1af7d15SMark Fasheh if (__ocfs2_recovery_map_test(osb, node_num)) { 1821a1af7d15SMark Fasheh spin_unlock(&osb->osb_lock); 1822ccd979bdSMark Fasheh continue; 1823a1af7d15SMark Fasheh } 1824d85b20e4SJoel Becker spin_unlock(&osb->osb_lock); 1825ccd979bdSMark Fasheh 1826ccd979bdSMark Fasheh /* Ok, we have a slot occupied by another node which 1827ccd979bdSMark Fasheh * is not in the recovery map. We trylock his journal 1828ccd979bdSMark Fasheh * file here to test if he's alive. */ 1829ccd979bdSMark Fasheh status = ocfs2_trylock_journal(osb, i); 1830ccd979bdSMark Fasheh if (!status) { 1831ccd979bdSMark Fasheh /* Since we're called from mount, we know that 1832ccd979bdSMark Fasheh * the recovery thread can't race us on 1833ccd979bdSMark Fasheh * setting / checking the recovery bits. */ 1834ccd979bdSMark Fasheh ocfs2_recovery_thread(osb, node_num); 1835ccd979bdSMark Fasheh } else if ((status < 0) && (status != -EAGAIN)) { 1836ccd979bdSMark Fasheh mlog_errno(status); 1837ccd979bdSMark Fasheh goto bail; 1838ccd979bdSMark Fasheh } 1839ccd979bdSMark Fasheh } 1840ccd979bdSMark Fasheh 1841ccd979bdSMark Fasheh status = 0; 1842ccd979bdSMark Fasheh bail: 1843ccd979bdSMark Fasheh return status; 1844ccd979bdSMark Fasheh } 1845ccd979bdSMark Fasheh 184683273932SSrinivas Eeda /* 184783273932SSrinivas Eeda * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some 184883273932SSrinivas Eeda * randomness to the timeout to minimize multple nodes firing the timer at the 184983273932SSrinivas Eeda * same time. 185083273932SSrinivas Eeda */ 185183273932SSrinivas Eeda static inline unsigned long ocfs2_orphan_scan_timeout(void) 185283273932SSrinivas Eeda { 185383273932SSrinivas Eeda unsigned long time; 185483273932SSrinivas Eeda 185583273932SSrinivas Eeda get_random_bytes(&time, sizeof(time)); 185683273932SSrinivas Eeda time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); 185783273932SSrinivas Eeda return msecs_to_jiffies(time); 185883273932SSrinivas Eeda } 185983273932SSrinivas Eeda 186083273932SSrinivas Eeda /* 186183273932SSrinivas Eeda * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for 186283273932SSrinivas Eeda * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This 186383273932SSrinivas Eeda * is done to catch any orphans that are left over in orphan directories. 186483273932SSrinivas Eeda * 1865a035bff6SSunil Mushran * It scans all slots, even ones that are in use. It does so to handle the 1866a035bff6SSunil Mushran * case described below: 1867a035bff6SSunil Mushran * 1868a035bff6SSunil Mushran * Node 1 has an inode it was using. The dentry went away due to memory 1869a035bff6SSunil Mushran * pressure. Node 1 closes the inode, but it's on the free list. The node 1870a035bff6SSunil Mushran * has the open lock. 1871a035bff6SSunil Mushran * Node 2 unlinks the inode. It grabs the dentry lock to notify others, 1872a035bff6SSunil Mushran * but node 1 has no dentry and doesn't get the message. It trylocks the 1873a035bff6SSunil Mushran * open lock, sees that another node has a PR, and does nothing. 1874a035bff6SSunil Mushran * Later node 2 runs its orphan dir. It igets the inode, trylocks the 1875a035bff6SSunil Mushran * open lock, sees the PR still, and does nothing. 1876a035bff6SSunil Mushran * Basically, we have to trigger an orphan iput on node 1. The only way 1877a035bff6SSunil Mushran * for this to happen is if node 1 runs node 2's orphan dir. 1878a035bff6SSunil Mushran * 187983273932SSrinivas Eeda * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT 188083273932SSrinivas Eeda * seconds. It gets an EX lock on os_lockres and checks sequence number 188183273932SSrinivas Eeda * stored in LVB. If the sequence number has changed, it means some other 188283273932SSrinivas Eeda * node has done the scan. This node skips the scan and tracks the 188383273932SSrinivas Eeda * sequence number. If the sequence number didn't change, it means a scan 188483273932SSrinivas Eeda * hasn't happened. The node queues a scan and increments the 188583273932SSrinivas Eeda * sequence number in the LVB. 188683273932SSrinivas Eeda */ 188783273932SSrinivas Eeda void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) 188883273932SSrinivas Eeda { 188983273932SSrinivas Eeda struct ocfs2_orphan_scan *os; 189083273932SSrinivas Eeda int status, i; 189183273932SSrinivas Eeda u32 seqno = 0; 189283273932SSrinivas Eeda 189383273932SSrinivas Eeda os = &osb->osb_orphan_scan; 189483273932SSrinivas Eeda 1895692684e1SSunil Mushran if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) 1896692684e1SSunil Mushran goto out; 1897692684e1SSunil Mushran 1898b4107950STao Ma trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno, 1899b4107950STao Ma atomic_read(&os->os_state)); 1900b4107950STao Ma 1901df152c24SSunil Mushran status = ocfs2_orphan_scan_lock(osb, &seqno); 190283273932SSrinivas Eeda if (status < 0) { 190383273932SSrinivas Eeda if (status != -EAGAIN) 190483273932SSrinivas Eeda mlog_errno(status); 190583273932SSrinivas Eeda goto out; 190683273932SSrinivas Eeda } 190783273932SSrinivas Eeda 1908692684e1SSunil Mushran /* Do no queue the tasks if the volume is being umounted */ 1909692684e1SSunil Mushran if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) 1910692684e1SSunil Mushran goto unlock; 1911692684e1SSunil Mushran 191283273932SSrinivas Eeda if (os->os_seqno != seqno) { 191383273932SSrinivas Eeda os->os_seqno = seqno; 191483273932SSrinivas Eeda goto unlock; 191583273932SSrinivas Eeda } 191683273932SSrinivas Eeda 191783273932SSrinivas Eeda for (i = 0; i < osb->max_slots; i++) 191883273932SSrinivas Eeda ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, 1919ed460cffSJoseph Qi NULL, ORPHAN_NO_NEED_TRUNCATE); 192083273932SSrinivas Eeda /* 192183273932SSrinivas Eeda * We queued a recovery on orphan slots, increment the sequence 192283273932SSrinivas Eeda * number and update LVB so other node will skip the scan for a while 192383273932SSrinivas Eeda */ 192483273932SSrinivas Eeda seqno++; 192515633a22SSrinivas Eeda os->os_count++; 192615633a22SSrinivas Eeda os->os_scantime = CURRENT_TIME; 192783273932SSrinivas Eeda unlock: 1928df152c24SSunil Mushran ocfs2_orphan_scan_unlock(osb, seqno); 192983273932SSrinivas Eeda out: 1930b4107950STao Ma trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno, 1931b4107950STao Ma atomic_read(&os->os_state)); 193283273932SSrinivas Eeda return; 193383273932SSrinivas Eeda } 193483273932SSrinivas Eeda 193583273932SSrinivas Eeda /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ 193683273932SSrinivas Eeda void ocfs2_orphan_scan_work(struct work_struct *work) 193783273932SSrinivas Eeda { 193883273932SSrinivas Eeda struct ocfs2_orphan_scan *os; 193983273932SSrinivas Eeda struct ocfs2_super *osb; 194083273932SSrinivas Eeda 194183273932SSrinivas Eeda os = container_of(work, struct ocfs2_orphan_scan, 194283273932SSrinivas Eeda os_orphan_scan_work.work); 194383273932SSrinivas Eeda osb = os->os_osb; 194483273932SSrinivas Eeda 194583273932SSrinivas Eeda mutex_lock(&os->os_lock); 194683273932SSrinivas Eeda ocfs2_queue_orphan_scan(osb); 1947692684e1SSunil Mushran if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) 194840f165f4STao Ma queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work, 194983273932SSrinivas Eeda ocfs2_orphan_scan_timeout()); 195083273932SSrinivas Eeda mutex_unlock(&os->os_lock); 195183273932SSrinivas Eeda } 195283273932SSrinivas Eeda 195383273932SSrinivas Eeda void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) 195483273932SSrinivas Eeda { 195583273932SSrinivas Eeda struct ocfs2_orphan_scan *os; 195683273932SSrinivas Eeda 195783273932SSrinivas Eeda os = &osb->osb_orphan_scan; 1958df152c24SSunil Mushran if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { 1959692684e1SSunil Mushran atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); 196083273932SSrinivas Eeda mutex_lock(&os->os_lock); 196183273932SSrinivas Eeda cancel_delayed_work(&os->os_orphan_scan_work); 196283273932SSrinivas Eeda mutex_unlock(&os->os_lock); 196383273932SSrinivas Eeda } 1964df152c24SSunil Mushran } 196583273932SSrinivas Eeda 1966df152c24SSunil Mushran void ocfs2_orphan_scan_init(struct ocfs2_super *osb) 196783273932SSrinivas Eeda { 196883273932SSrinivas Eeda struct ocfs2_orphan_scan *os; 196983273932SSrinivas Eeda 197083273932SSrinivas Eeda os = &osb->osb_orphan_scan; 197183273932SSrinivas Eeda os->os_osb = osb; 197215633a22SSrinivas Eeda os->os_count = 0; 19733211949fSSunil Mushran os->os_seqno = 0; 197483273932SSrinivas Eeda mutex_init(&os->os_lock); 1975df152c24SSunil Mushran INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); 19768b712cd5SJeff Mahoney } 197783273932SSrinivas Eeda 19788b712cd5SJeff Mahoney void ocfs2_orphan_scan_start(struct ocfs2_super *osb) 19798b712cd5SJeff Mahoney { 19808b712cd5SJeff Mahoney struct ocfs2_orphan_scan *os; 19818b712cd5SJeff Mahoney 19828b712cd5SJeff Mahoney os = &osb->osb_orphan_scan; 19838b712cd5SJeff Mahoney os->os_scantime = CURRENT_TIME; 1984df152c24SSunil Mushran if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) 1985df152c24SSunil Mushran atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); 1986df152c24SSunil Mushran else { 1987df152c24SSunil Mushran atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); 198840f165f4STao Ma queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work, 198983273932SSrinivas Eeda ocfs2_orphan_scan_timeout()); 1990df152c24SSunil Mushran } 199183273932SSrinivas Eeda } 199283273932SSrinivas Eeda 19935eae5b96SMark Fasheh struct ocfs2_orphan_filldir_priv { 19943704412bSAl Viro struct dir_context ctx; 19955eae5b96SMark Fasheh struct inode *head; 19965eae5b96SMark Fasheh struct ocfs2_super *osb; 19975eae5b96SMark Fasheh }; 19985eae5b96SMark Fasheh 1999ac7576f4SMiklos Szeredi static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name, 2000ac7576f4SMiklos Szeredi int name_len, loff_t pos, u64 ino, 2001ac7576f4SMiklos Szeredi unsigned type) 20025eae5b96SMark Fasheh { 2003ac7576f4SMiklos Szeredi struct ocfs2_orphan_filldir_priv *p = 2004ac7576f4SMiklos Szeredi container_of(ctx, struct ocfs2_orphan_filldir_priv, ctx); 20055eae5b96SMark Fasheh struct inode *iter; 20065eae5b96SMark Fasheh 20075eae5b96SMark Fasheh if (name_len == 1 && !strncmp(".", name, 1)) 20085eae5b96SMark Fasheh return 0; 20095eae5b96SMark Fasheh if (name_len == 2 && !strncmp("..", name, 2)) 20105eae5b96SMark Fasheh return 0; 20115eae5b96SMark Fasheh 20125eae5b96SMark Fasheh /* Skip bad inodes so that recovery can continue */ 20135eae5b96SMark Fasheh iter = ocfs2_iget(p->osb, ino, 20145fa0613eSJan Kara OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); 20155eae5b96SMark Fasheh if (IS_ERR(iter)) 20165eae5b96SMark Fasheh return 0; 20175eae5b96SMark Fasheh 2018ed460cffSJoseph Qi /* Skip inodes which are already added to recover list, since dio may 2019ed460cffSJoseph Qi * happen concurrently with unlink/rename */ 2020ed460cffSJoseph Qi if (OCFS2_I(iter)->ip_next_orphan) { 2021ed460cffSJoseph Qi iput(iter); 2022ed460cffSJoseph Qi return 0; 2023ed460cffSJoseph Qi } 2024ed460cffSJoseph Qi 2025b4107950STao Ma trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno); 20265eae5b96SMark Fasheh /* No locking is required for the next_orphan queue as there 20275eae5b96SMark Fasheh * is only ever a single process doing orphan recovery. */ 20285eae5b96SMark Fasheh OCFS2_I(iter)->ip_next_orphan = p->head; 20295eae5b96SMark Fasheh p->head = iter; 20305eae5b96SMark Fasheh 20315eae5b96SMark Fasheh return 0; 20325eae5b96SMark Fasheh } 20335eae5b96SMark Fasheh 2034b4df6ed8SMark Fasheh static int ocfs2_queue_orphans(struct ocfs2_super *osb, 2035b4df6ed8SMark Fasheh int slot, 2036b4df6ed8SMark Fasheh struct inode **head) 2037ccd979bdSMark Fasheh { 2038b4df6ed8SMark Fasheh int status; 2039ccd979bdSMark Fasheh struct inode *orphan_dir_inode = NULL; 20403704412bSAl Viro struct ocfs2_orphan_filldir_priv priv = { 20413704412bSAl Viro .ctx.actor = ocfs2_orphan_filldir, 20423704412bSAl Viro .osb = osb, 20433704412bSAl Viro .head = *head 20443704412bSAl Viro }; 2045ccd979bdSMark Fasheh 2046ccd979bdSMark Fasheh orphan_dir_inode = ocfs2_get_system_file_inode(osb, 2047ccd979bdSMark Fasheh ORPHAN_DIR_SYSTEM_INODE, 2048ccd979bdSMark Fasheh slot); 2049ccd979bdSMark Fasheh if (!orphan_dir_inode) { 2050ccd979bdSMark Fasheh status = -ENOENT; 2051ccd979bdSMark Fasheh mlog_errno(status); 2052b4df6ed8SMark Fasheh return status; 2053ccd979bdSMark Fasheh } 2054ccd979bdSMark Fasheh 20551b1dcc1bSJes Sorensen mutex_lock(&orphan_dir_inode->i_mutex); 2056e63aecb6SMark Fasheh status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); 2057ccd979bdSMark Fasheh if (status < 0) { 2058ccd979bdSMark Fasheh mlog_errno(status); 2059ccd979bdSMark Fasheh goto out; 2060ccd979bdSMark Fasheh } 2061ccd979bdSMark Fasheh 20623704412bSAl Viro status = ocfs2_dir_foreach(orphan_dir_inode, &priv.ctx); 20635eae5b96SMark Fasheh if (status) { 2064ccd979bdSMark Fasheh mlog_errno(status); 2065a86370fbSMark Fasheh goto out_cluster; 2066ccd979bdSMark Fasheh } 2067ccd979bdSMark Fasheh 20685eae5b96SMark Fasheh *head = priv.head; 2069ccd979bdSMark Fasheh 2070a86370fbSMark Fasheh out_cluster: 2071e63aecb6SMark Fasheh ocfs2_inode_unlock(orphan_dir_inode, 0); 2072b4df6ed8SMark Fasheh out: 2073b4df6ed8SMark Fasheh mutex_unlock(&orphan_dir_inode->i_mutex); 2074ccd979bdSMark Fasheh iput(orphan_dir_inode); 2075b4df6ed8SMark Fasheh return status; 2076b4df6ed8SMark Fasheh } 2077b4df6ed8SMark Fasheh 2078b4df6ed8SMark Fasheh static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, 2079b4df6ed8SMark Fasheh int slot) 2080b4df6ed8SMark Fasheh { 2081b4df6ed8SMark Fasheh int ret; 2082b4df6ed8SMark Fasheh 2083b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 2084b4df6ed8SMark Fasheh ret = !osb->osb_orphan_wipes[slot]; 2085b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 2086b4df6ed8SMark Fasheh return ret; 2087b4df6ed8SMark Fasheh } 2088b4df6ed8SMark Fasheh 2089b4df6ed8SMark Fasheh static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, 2090b4df6ed8SMark Fasheh int slot) 2091b4df6ed8SMark Fasheh { 2092b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 2093b4df6ed8SMark Fasheh /* Mark ourselves such that new processes in delete_inode() 2094b4df6ed8SMark Fasheh * know to quit early. */ 2095b4df6ed8SMark Fasheh ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); 2096b4df6ed8SMark Fasheh while (osb->osb_orphan_wipes[slot]) { 2097b4df6ed8SMark Fasheh /* If any processes are already in the middle of an 2098b4df6ed8SMark Fasheh * orphan wipe on this dir, then we need to wait for 2099b4df6ed8SMark Fasheh * them. */ 2100b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 2101b4df6ed8SMark Fasheh wait_event_interruptible(osb->osb_wipe_event, 2102b4df6ed8SMark Fasheh ocfs2_orphan_recovery_can_continue(osb, slot)); 2103b4df6ed8SMark Fasheh spin_lock(&osb->osb_lock); 2104b4df6ed8SMark Fasheh } 2105b4df6ed8SMark Fasheh spin_unlock(&osb->osb_lock); 2106b4df6ed8SMark Fasheh } 2107b4df6ed8SMark Fasheh 2108b4df6ed8SMark Fasheh static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, 2109b4df6ed8SMark Fasheh int slot) 2110b4df6ed8SMark Fasheh { 2111b4df6ed8SMark Fasheh ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); 2112b4df6ed8SMark Fasheh } 2113b4df6ed8SMark Fasheh 2114b4df6ed8SMark Fasheh /* 2115b4df6ed8SMark Fasheh * Orphan recovery. Each mounted node has it's own orphan dir which we 2116b4df6ed8SMark Fasheh * must run during recovery. Our strategy here is to build a list of 2117b4df6ed8SMark Fasheh * the inodes in the orphan dir and iget/iput them. The VFS does 2118b4df6ed8SMark Fasheh * (most) of the rest of the work. 2119b4df6ed8SMark Fasheh * 2120b4df6ed8SMark Fasheh * Orphan recovery can happen at any time, not just mount so we have a 2121b4df6ed8SMark Fasheh * couple of extra considerations. 2122b4df6ed8SMark Fasheh * 2123b4df6ed8SMark Fasheh * - We grab as many inodes as we can under the orphan dir lock - 2124b4df6ed8SMark Fasheh * doing iget() outside the orphan dir risks getting a reference on 2125b4df6ed8SMark Fasheh * an invalid inode. 2126b4df6ed8SMark Fasheh * - We must be sure not to deadlock with other processes on the 2127b4df6ed8SMark Fasheh * system wanting to run delete_inode(). This can happen when they go 2128b4df6ed8SMark Fasheh * to lock the orphan dir and the orphan recovery process attempts to 2129b4df6ed8SMark Fasheh * iget() inside the orphan dir lock. This can be avoided by 2130b4df6ed8SMark Fasheh * advertising our state to ocfs2_delete_inode(). 2131b4df6ed8SMark Fasheh */ 2132b4df6ed8SMark Fasheh static int ocfs2_recover_orphans(struct ocfs2_super *osb, 2133ed460cffSJoseph Qi int slot, 2134ed460cffSJoseph Qi enum ocfs2_orphan_reco_type orphan_reco_type) 2135b4df6ed8SMark Fasheh { 2136b4df6ed8SMark Fasheh int ret = 0; 2137b4df6ed8SMark Fasheh struct inode *inode = NULL; 2138b4df6ed8SMark Fasheh struct inode *iter; 2139b4df6ed8SMark Fasheh struct ocfs2_inode_info *oi; 2140cf1776a9SJoseph Qi struct buffer_head *di_bh = NULL; 2141cf1776a9SJoseph Qi struct ocfs2_dinode *di = NULL; 2142b4df6ed8SMark Fasheh 2143b4107950STao Ma trace_ocfs2_recover_orphans(slot); 2144b4df6ed8SMark Fasheh 2145b4df6ed8SMark Fasheh ocfs2_mark_recovering_orphan_dir(osb, slot); 2146b4df6ed8SMark Fasheh ret = ocfs2_queue_orphans(osb, slot, &inode); 2147b4df6ed8SMark Fasheh ocfs2_clear_recovering_orphan_dir(osb, slot); 2148b4df6ed8SMark Fasheh 2149b4df6ed8SMark Fasheh /* Error here should be noted, but we want to continue with as 2150b4df6ed8SMark Fasheh * many queued inodes as we've got. */ 2151b4df6ed8SMark Fasheh if (ret) 2152b4df6ed8SMark Fasheh mlog_errno(ret); 2153ccd979bdSMark Fasheh 2154ccd979bdSMark Fasheh while (inode) { 2155ccd979bdSMark Fasheh oi = OCFS2_I(inode); 2156b4107950STao Ma trace_ocfs2_recover_orphans_iput( 2157b4107950STao Ma (unsigned long long)oi->ip_blkno); 2158ccd979bdSMark Fasheh 2159ccd979bdSMark Fasheh iter = oi->ip_next_orphan; 2160ed460cffSJoseph Qi oi->ip_next_orphan = NULL; 2161ccd979bdSMark Fasheh 2162cf1776a9SJoseph Qi ret = ocfs2_rw_lock(inode, 1); 2163cf1776a9SJoseph Qi if (ret < 0) { 2164cf1776a9SJoseph Qi mlog_errno(ret); 2165cf1776a9SJoseph Qi goto next; 2166cf1776a9SJoseph Qi } 2167ed460cffSJoseph Qi /* 2168ed460cffSJoseph Qi * We need to take and drop the inode lock to 2169ed460cffSJoseph Qi * force read inode from disk. 2170ed460cffSJoseph Qi */ 2171cf1776a9SJoseph Qi ret = ocfs2_inode_lock(inode, &di_bh, 1); 2172ed460cffSJoseph Qi if (ret) { 2173ed460cffSJoseph Qi mlog_errno(ret); 2174cf1776a9SJoseph Qi goto unlock_rw; 2175ed460cffSJoseph Qi } 2176cf1776a9SJoseph Qi 2177cf1776a9SJoseph Qi di = (struct ocfs2_dinode *)di_bh->b_data; 2178ed460cffSJoseph Qi 2179ed460cffSJoseph Qi if (inode->i_nlink == 0) { 2180ccd979bdSMark Fasheh spin_lock(&oi->ip_lock); 2181ccd979bdSMark Fasheh /* Set the proper information to get us going into 2182ccd979bdSMark Fasheh * ocfs2_delete_inode. */ 2183ccd979bdSMark Fasheh oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; 2184ccd979bdSMark Fasheh spin_unlock(&oi->ip_lock); 2185cf1776a9SJoseph Qi } else if ((orphan_reco_type == ORPHAN_NEED_TRUNCATE) && 2186cf1776a9SJoseph Qi (di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { 2187ed460cffSJoseph Qi ret = ocfs2_truncate_file(inode, di_bh, 2188ed460cffSJoseph Qi i_size_read(inode)); 2189ed460cffSJoseph Qi if (ret < 0) { 2190ed460cffSJoseph Qi if (ret != -ENOSPC) 2191ed460cffSJoseph Qi mlog_errno(ret); 2192cf1776a9SJoseph Qi goto unlock_inode; 2193ed460cffSJoseph Qi } 2194ed460cffSJoseph Qi 2195cf1776a9SJoseph Qi ret = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); 2196ed460cffSJoseph Qi if (ret) 2197ed460cffSJoseph Qi mlog_errno(ret); 21984813962bSJoseph Qi 21994813962bSJoseph Qi wake_up(&OCFS2_I(inode)->append_dio_wq); 2200ed460cffSJoseph Qi } /* else if ORPHAN_NO_NEED_TRUNCATE, do nothing */ 2201cf1776a9SJoseph Qi unlock_inode: 2202cf1776a9SJoseph Qi ocfs2_inode_unlock(inode, 1); 2203cf1776a9SJoseph Qi unlock_rw: 2204cf1776a9SJoseph Qi ocfs2_rw_unlock(inode, 1); 2205ed460cffSJoseph Qi next: 2206ccd979bdSMark Fasheh iput(inode); 2207cf1776a9SJoseph Qi brelse(di_bh); 2208cf1776a9SJoseph Qi di_bh = NULL; 2209ccd979bdSMark Fasheh inode = iter; 2210ccd979bdSMark Fasheh } 2211ccd979bdSMark Fasheh 2212b4df6ed8SMark Fasheh return ret; 2213ccd979bdSMark Fasheh } 2214ccd979bdSMark Fasheh 221519ece546SJan Kara static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) 2216ccd979bdSMark Fasheh { 2217ccd979bdSMark Fasheh /* This check is good because ocfs2 will wait on our recovery 2218ccd979bdSMark Fasheh * thread before changing it to something other than MOUNTED 2219ccd979bdSMark Fasheh * or DISABLED. */ 2220ccd979bdSMark Fasheh wait_event(osb->osb_mount_event, 222119ece546SJan Kara (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || 222219ece546SJan Kara atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || 2223ccd979bdSMark Fasheh atomic_read(&osb->vol_state) == VOLUME_DISABLED); 2224ccd979bdSMark Fasheh 2225ccd979bdSMark Fasheh /* If there's an error on mount, then we may never get to the 2226ccd979bdSMark Fasheh * MOUNTED flag, but this is set right before 2227ccd979bdSMark Fasheh * dismount_volume() so we can trust it. */ 2228ccd979bdSMark Fasheh if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { 2229b4107950STao Ma trace_ocfs2_wait_on_mount(VOLUME_DISABLED); 2230ccd979bdSMark Fasheh mlog(0, "mount error, exiting!\n"); 2231ccd979bdSMark Fasheh return -EBUSY; 2232ccd979bdSMark Fasheh } 2233ccd979bdSMark Fasheh 2234ccd979bdSMark Fasheh return 0; 2235ccd979bdSMark Fasheh } 2236ccd979bdSMark Fasheh 2237ccd979bdSMark Fasheh static int ocfs2_commit_thread(void *arg) 2238ccd979bdSMark Fasheh { 2239ccd979bdSMark Fasheh int status; 2240ccd979bdSMark Fasheh struct ocfs2_super *osb = arg; 2241ccd979bdSMark Fasheh struct ocfs2_journal *journal = osb->journal; 2242ccd979bdSMark Fasheh 2243ccd979bdSMark Fasheh /* we can trust j_num_trans here because _should_stop() is only set in 2244ccd979bdSMark Fasheh * shutdown and nobody other than ourselves should be able to start 2245ccd979bdSMark Fasheh * transactions. committing on shutdown might take a few iterations 2246ccd979bdSMark Fasheh * as final transactions put deleted inodes on the list */ 2247ccd979bdSMark Fasheh while (!(kthread_should_stop() && 2248ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans) == 0)) { 2249ccd979bdSMark Fasheh 2250745ae8baSMark Fasheh wait_event_interruptible(osb->checkpoint_event, 2251ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans) 2252745ae8baSMark Fasheh || kthread_should_stop()); 2253ccd979bdSMark Fasheh 2254ccd979bdSMark Fasheh status = ocfs2_commit_cache(osb); 225555b465b6SJoseph Qi if (status < 0) { 225655b465b6SJoseph Qi static unsigned long abort_warn_time; 225755b465b6SJoseph Qi 225855b465b6SJoseph Qi /* Warn about this once per minute */ 225955b465b6SJoseph Qi if (printk_timed_ratelimit(&abort_warn_time, 60*HZ)) 226055b465b6SJoseph Qi mlog(ML_ERROR, "status = %d, journal is " 226155b465b6SJoseph Qi "already aborted.\n", status); 226255b465b6SJoseph Qi /* 226355b465b6SJoseph Qi * After ocfs2_commit_cache() fails, j_num_trans has a 226455b465b6SJoseph Qi * non-zero value. Sleep here to avoid a busy-wait 226555b465b6SJoseph Qi * loop. 226655b465b6SJoseph Qi */ 226755b465b6SJoseph Qi msleep_interruptible(1000); 226855b465b6SJoseph Qi } 2269ccd979bdSMark Fasheh 2270ccd979bdSMark Fasheh if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ 2271ccd979bdSMark Fasheh mlog(ML_KTHREAD, 2272ccd979bdSMark Fasheh "commit_thread: %u transactions pending on " 2273ccd979bdSMark Fasheh "shutdown\n", 2274ccd979bdSMark Fasheh atomic_read(&journal->j_num_trans)); 2275ccd979bdSMark Fasheh } 2276ccd979bdSMark Fasheh } 2277ccd979bdSMark Fasheh 2278ccd979bdSMark Fasheh return 0; 2279ccd979bdSMark Fasheh } 2280ccd979bdSMark Fasheh 2281539d8264SSunil Mushran /* Reads all the journal inodes without taking any cluster locks. Used 2282539d8264SSunil Mushran * for hard readonly access to determine whether any journal requires 2283539d8264SSunil Mushran * recovery. Also used to refresh the recovery generation numbers after 2284539d8264SSunil Mushran * a journal has been recovered by another node. 2285539d8264SSunil Mushran */ 2286ccd979bdSMark Fasheh int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) 2287ccd979bdSMark Fasheh { 2288ccd979bdSMark Fasheh int ret = 0; 2289ccd979bdSMark Fasheh unsigned int slot; 2290539d8264SSunil Mushran struct buffer_head *di_bh = NULL; 2291ccd979bdSMark Fasheh struct ocfs2_dinode *di; 2292539d8264SSunil Mushran int journal_dirty = 0; 2293ccd979bdSMark Fasheh 2294ccd979bdSMark Fasheh for(slot = 0; slot < osb->max_slots; slot++) { 2295539d8264SSunil Mushran ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); 2296539d8264SSunil Mushran if (ret) { 2297ccd979bdSMark Fasheh mlog_errno(ret); 2298ccd979bdSMark Fasheh goto out; 2299ccd979bdSMark Fasheh } 2300ccd979bdSMark Fasheh 2301ccd979bdSMark Fasheh di = (struct ocfs2_dinode *) di_bh->b_data; 2302ccd979bdSMark Fasheh 2303539d8264SSunil Mushran osb->slot_recovery_generations[slot] = 2304539d8264SSunil Mushran ocfs2_get_recovery_generation(di); 2305539d8264SSunil Mushran 2306ccd979bdSMark Fasheh if (le32_to_cpu(di->id1.journal1.ij_flags) & 2307ccd979bdSMark Fasheh OCFS2_JOURNAL_DIRTY_FL) 2308539d8264SSunil Mushran journal_dirty = 1; 2309ccd979bdSMark Fasheh 2310ccd979bdSMark Fasheh brelse(di_bh); 2311539d8264SSunil Mushran di_bh = NULL; 2312ccd979bdSMark Fasheh } 2313ccd979bdSMark Fasheh 2314ccd979bdSMark Fasheh out: 2315539d8264SSunil Mushran if (journal_dirty) 2316539d8264SSunil Mushran ret = -EROFS; 2317ccd979bdSMark Fasheh return ret; 2318ccd979bdSMark Fasheh } 2319