diff options
Diffstat (limited to 'fs/jbd2')
| -rw-r--r-- | fs/jbd2/commit.c | 77 | ||||
| -rw-r--r-- | fs/jbd2/journal.c | 10 | ||||
| -rw-r--r-- | fs/jbd2/transaction.c | 46 |
3 files changed, 65 insertions, 68 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index cf2fc0594063..5f26139a165a 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -555,7 +555,6 @@ void jbd2_journal_commit_transaction(journal_t *journal) blk_start_plug(&plug); jbd2_journal_write_revoke_records(journal, commit_transaction, &log_bufs, WRITE_SYNC); - blk_finish_plug(&plug); jbd_debug(3, "JBD2: commit phase 2b\n"); @@ -582,7 +581,6 @@ void jbd2_journal_commit_transaction(journal_t *journal) err = 0; bufs = 0; descriptor = NULL; - blk_start_plug(&plug); while (commit_transaction->t_buffers) { /* Find the next buffer to be journaled... */ @@ -1067,6 +1065,25 @@ restart_loop: goto restart_loop; } + /* Add the transaction to the checkpoint list + * __journal_remove_checkpoint() can not destroy transaction + * under us because it is not marked as T_FINISHED yet */ + if (journal->j_checkpoint_transactions == NULL) { + journal->j_checkpoint_transactions = commit_transaction; + commit_transaction->t_cpnext = commit_transaction; + commit_transaction->t_cpprev = commit_transaction; + } else { + commit_transaction->t_cpnext = + journal->j_checkpoint_transactions; + commit_transaction->t_cpprev = + commit_transaction->t_cpnext->t_cpprev; + commit_transaction->t_cpnext->t_cpprev = + commit_transaction; + commit_transaction->t_cpprev->t_cpnext = + commit_transaction; + } + spin_unlock(&journal->j_list_lock); + /* Done with this transaction! */ jbd_debug(3, "JBD2: commit phase 7\n"); @@ -1085,24 +1102,7 @@ restart_loop: atomic_read(&commit_transaction->t_handle_count); trace_jbd2_run_stats(journal->j_fs_dev->bd_dev, commit_transaction->t_tid, &stats.run); - - /* - * Calculate overall stats - */ - spin_lock(&journal->j_history_lock); - journal->j_stats.ts_tid++; - if (commit_transaction->t_requested) - journal->j_stats.ts_requested++; - journal->j_stats.run.rs_wait += stats.run.rs_wait; - journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay; - journal->j_stats.run.rs_running += stats.run.rs_running; - journal->j_stats.run.rs_locked += stats.run.rs_locked; - journal->j_stats.run.rs_flushing += stats.run.rs_flushing; - journal->j_stats.run.rs_logging += stats.run.rs_logging; - journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count; - journal->j_stats.run.rs_blocks += stats.run.rs_blocks; - journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged; - spin_unlock(&journal->j_history_lock); + stats.ts_requested = (commit_transaction->t_requested) ? 1 : 0; commit_transaction->t_state = T_COMMIT_CALLBACK; J_ASSERT(commit_transaction == journal->j_committing_transaction); @@ -1122,24 +1122,6 @@ restart_loop: write_unlock(&journal->j_state_lock); - if (journal->j_checkpoint_transactions == NULL) { - journal->j_checkpoint_transactions = commit_transaction; - commit_transaction->t_cpnext = commit_transaction; - commit_transaction->t_cpprev = commit_transaction; - } else { - commit_transaction->t_cpnext = - journal->j_checkpoint_transactions; - commit_transaction->t_cpprev = - commit_transaction->t_cpnext->t_cpprev; - commit_transaction->t_cpnext->t_cpprev = - commit_transaction; - commit_transaction->t_cpprev->t_cpnext = - commit_transaction; - } - spin_unlock(&journal->j_list_lock); - /* Drop all spin_locks because commit_callback may be block. - * __journal_remove_checkpoint() can not destroy transaction - * under us because it is not marked as T_FINISHED yet */ if (journal->j_commit_callback) journal->j_commit_callback(journal, commit_transaction); @@ -1150,7 +1132,7 @@ restart_loop: write_lock(&journal->j_state_lock); spin_lock(&journal->j_list_lock); commit_transaction->t_state = T_FINISHED; - /* Recheck checkpoint lists after j_list_lock was dropped */ + /* Check if the transaction can be dropped now that we are finished */ if (commit_transaction->t_checkpoint_list == NULL && commit_transaction->t_checkpoint_io_list == NULL) { __jbd2_journal_drop_transaction(journal, commit_transaction); @@ -1159,4 +1141,21 @@ restart_loop: spin_unlock(&journal->j_list_lock); write_unlock(&journal->j_state_lock); wake_up(&journal->j_wait_done_commit); + + /* + * Calculate overall stats + */ + spin_lock(&journal->j_history_lock); + journal->j_stats.ts_tid++; + journal->j_stats.ts_requested += stats.ts_requested; + journal->j_stats.run.rs_wait += stats.run.rs_wait; + journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay; + journal->j_stats.run.rs_running += stats.run.rs_running; + journal->j_stats.run.rs_locked += stats.run.rs_locked; + journal->j_stats.run.rs_flushing += stats.run.rs_flushing; + journal->j_stats.run.rs_logging += stats.run.rs_logging; + journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count; + journal->j_stats.run.rs_blocks += stats.run.rs_blocks; + journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged; + spin_unlock(&journal->j_history_lock); } diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 5fa344afb49a..67b8e303946c 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -122,7 +122,7 @@ EXPORT_SYMBOL(__jbd2_debug); #endif /* Checksumming functions */ -int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb) +static int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb) { if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) return 1; @@ -143,7 +143,7 @@ static __be32 jbd2_superblock_csum(journal_t *j, journal_superblock_t *sb) return cpu_to_be32(csum); } -int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) +static int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) { if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) return 1; @@ -151,7 +151,7 @@ int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) return sb->s_checksum == jbd2_superblock_csum(j, sb); } -void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb) +static void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb) { if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) return; @@ -302,8 +302,8 @@ static void journal_kill_thread(journal_t *journal) journal->j_flags |= JBD2_UNMOUNT; while (journal->j_task) { - wake_up(&journal->j_wait_commit); write_unlock(&journal->j_state_lock); + wake_up(&journal->j_wait_commit); wait_event(journal->j_wait_done_commit, journal->j_task == NULL); write_lock(&journal->j_state_lock); } @@ -710,8 +710,8 @@ int jbd2_log_wait_commit(journal_t *journal, tid_t tid) while (tid_gt(tid, journal->j_commit_sequence)) { jbd_debug(1, "JBD2: want %d, j_commit_sequence=%d\n", tid, journal->j_commit_sequence); - wake_up(&journal->j_wait_commit); read_unlock(&journal->j_state_lock); + wake_up(&journal->j_wait_commit); wait_event(journal->j_wait_done_commit, !tid_gt(tid, journal->j_commit_sequence)); read_lock(&journal->j_state_lock); diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 60bb365f54a5..38cfcf5f6fce 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -1073,7 +1073,6 @@ int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh) * reused here. */ jbd_lock_bh_state(bh); - spin_lock(&journal->j_list_lock); J_ASSERT_JH(jh, (jh->b_transaction == transaction || jh->b_transaction == NULL || (jh->b_transaction == journal->j_committing_transaction && @@ -1096,12 +1095,14 @@ int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh) jh->b_modified = 0; JBUFFER_TRACE(jh, "file as BJ_Reserved"); + spin_lock(&journal->j_list_lock); __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved); } else if (jh->b_transaction == journal->j_committing_transaction) { /* first access by this transaction */ jh->b_modified = 0; JBUFFER_TRACE(jh, "set next transaction"); + spin_lock(&journal->j_list_lock); jh->b_next_transaction = transaction; } spin_unlock(&journal->j_list_lock); @@ -1312,7 +1313,7 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) journal->j_running_transaction)) { printk(KERN_ERR "JBD2: %s: " "jh->b_transaction (%llu, %p, %u) != " - "journal->j_running_transaction (%p, %u)", + "journal->j_running_transaction (%p, %u)\n", journal->j_devname, (unsigned long long) bh->b_blocknr, jh->b_transaction, @@ -1335,30 +1336,25 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) */ if (jh->b_transaction != transaction) { JBUFFER_TRACE(jh, "already on other transaction"); - if (unlikely(jh->b_transaction != - journal->j_committing_transaction)) { - printk(KERN_ERR "JBD2: %s: " - "jh->b_transaction (%llu, %p, %u) != " - "journal->j_committing_transaction (%p, %u)", + if (unlikely(((jh->b_transaction != + journal->j_committing_transaction)) || + (jh->b_next_transaction != transaction))) { + printk(KERN_ERR "jbd2_journal_dirty_metadata: %s: " + "bad jh for block %llu: " + "transaction (%p, %u), " + "jh->b_transaction (%p, %u), " + "jh->b_next_transaction (%p, %u), jlist %u\n", journal->j_devname, (unsigned long long) bh->b_blocknr, + transaction, transaction->t_tid, jh->b_transaction, - jh->b_transaction ? jh->b_transaction->t_tid : 0, - journal->j_committing_transaction, - journal->j_committing_transaction ? - journal->j_committing_transaction->t_tid : 0); - ret = -EINVAL; - } - if (unlikely(jh->b_next_transaction != transaction)) { - printk(KERN_ERR "JBD2: %s: " - "jh->b_next_transaction (%llu, %p, %u) != " - "transaction (%p, %u)", - journal->j_devname, - (unsigned long long) bh->b_blocknr, + jh->b_transaction ? + jh->b_transaction->t_tid : 0, jh->b_next_transaction, jh->b_next_transaction ? jh->b_next_transaction->t_tid : 0, - transaction, transaction->t_tid); + jh->b_jlist); + WARN_ON(1); ret = -EINVAL; } /* And this case is illegal: we can't reuse another @@ -1415,7 +1411,6 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) BUFFER_TRACE(bh, "entry"); jbd_lock_bh_state(bh); - spin_lock(&journal->j_list_lock); if (!buffer_jbd(bh)) goto not_jbd; @@ -1468,6 +1463,7 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) * we know to remove the checkpoint after we commit. */ + spin_lock(&journal->j_list_lock); if (jh->b_cp_transaction) { __jbd2_journal_temp_unlink_buffer(jh); __jbd2_journal_file_buffer(jh, transaction, BJ_Forget); @@ -1480,6 +1476,7 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) goto drop; } } + spin_unlock(&journal->j_list_lock); } else if (jh->b_transaction) { J_ASSERT_JH(jh, (jh->b_transaction == journal->j_committing_transaction)); @@ -1491,7 +1488,9 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) if (jh->b_next_transaction) { J_ASSERT(jh->b_next_transaction == transaction); + spin_lock(&journal->j_list_lock); jh->b_next_transaction = NULL; + spin_unlock(&journal->j_list_lock); /* * only drop a reference if this transaction modified @@ -1503,7 +1502,6 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) } not_jbd: - spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); __brelse(bh); drop: @@ -1821,11 +1819,11 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh) if (buffer_locked(bh) || buffer_dirty(bh)) goto out; - if (jh->b_next_transaction != NULL) + if (jh->b_next_transaction != NULL || jh->b_transaction != NULL) goto out; spin_lock(&journal->j_list_lock); - if (jh->b_cp_transaction != NULL && jh->b_transaction == NULL) { + if (jh->b_cp_transaction != NULL) { /* written-back checkpointed metadata buffer */ JBUFFER_TRACE(jh, "remove from checkpoint list"); __jbd2_journal_remove_checkpoint(jh); |