diff options
Diffstat (limited to 'fs/jbd2/journal.c')
| -rw-r--r-- | fs/jbd2/journal.c | 61 |
1 files changed, 45 insertions, 16 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 7d5ef3bf3f3e..dfb057900e79 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * linux/fs/jbd2/journal.c * @@ -5,10 +6,6 @@ * * Copyright 1998 Red Hat corp --- All Rights Reserved * - * This file is part of the Linux kernel and is made available under - * the terms of the GNU General Public License, version 2, or at your - * option, any later version, incorporated herein by reference. - * * Generic filesystem journal-writing code; part of the ext2fs * journaling system. * @@ -165,11 +162,11 @@ static void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb) * Helper function used to manage commit timeouts */ -static void commit_timeout(unsigned long __data) +static void commit_timeout(struct timer_list *t) { - struct task_struct * p = (struct task_struct *) __data; + journal_t *journal = from_timer(journal, t, j_commit_timer); - wake_up_process(p); + wake_up_process(journal->j_task); } /* @@ -197,8 +194,7 @@ static int kjournald2(void *arg) * Set up an interval timer which can be used to trigger a commit wakeup * after the commit interval expires */ - setup_timer(&journal->j_commit_timer, commit_timeout, - (unsigned long)current); + timer_setup(&journal->j_commit_timer, commit_timeout, 0); set_freezable(); @@ -738,6 +734,23 @@ int jbd2_log_wait_commit(journal_t *journal, tid_t tid) return err; } +/* Return 1 when transaction with given tid has already committed. */ +int jbd2_transaction_committed(journal_t *journal, tid_t tid) +{ + int ret = 1; + + read_lock(&journal->j_state_lock); + if (journal->j_running_transaction && + journal->j_running_transaction->t_tid == tid) + ret = 0; + if (journal->j_committing_transaction && + journal->j_committing_transaction->t_tid == tid) + ret = 0; + read_unlock(&journal->j_state_lock); + return ret; +} +EXPORT_SYMBOL(jbd2_transaction_committed); + /* * When this function returns the transaction corresponding to tid * will be completed. If the transaction has currently running, start @@ -961,7 +974,7 @@ out: } /* - * This is a variaon of __jbd2_update_log_tail which checks for validity of + * This is a variation of __jbd2_update_log_tail which checks for validity of * provided log tail and locks j_checkpoint_mutex. So it is safe against races * with other threads updating log tail. */ @@ -1404,6 +1417,9 @@ int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid, journal_superblock_t *sb = journal->j_superblock; int ret; + if (is_journal_aborted(journal)) + return -EIO; + BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex)); jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n", tail_block, tail_tid); @@ -1470,12 +1486,15 @@ static void jbd2_mark_journal_empty(journal_t *journal, int write_op) void jbd2_journal_update_sb_errno(journal_t *journal) { journal_superblock_t *sb = journal->j_superblock; + int errcode; read_lock(&journal->j_state_lock); - jbd_debug(1, "JBD2: updating superblock error (errno %d)\n", - journal->j_errno); - sb->s_errno = cpu_to_be32(journal->j_errno); + errcode = journal->j_errno; read_unlock(&journal->j_state_lock); + if (errcode == -ESHUTDOWN) + errcode = 0; + jbd_debug(1, "JBD2: updating superblock error (errno %d)\n", errcode); + sb->s_errno = cpu_to_be32(errcode); jbd2_write_superblock(journal, REQ_SYNC | REQ_FUA); } @@ -2092,12 +2111,22 @@ void __jbd2_journal_abort_hard(journal_t *journal) * but don't do any other IO. */ static void __journal_abort_soft (journal_t *journal, int errno) { - if (journal->j_flags & JBD2_ABORT) - return; + int old_errno; - if (!journal->j_errno) + write_lock(&journal->j_state_lock); + old_errno = journal->j_errno; + if (!journal->j_errno || errno == -ESHUTDOWN) journal->j_errno = errno; + if (journal->j_flags & JBD2_ABORT) { + write_unlock(&journal->j_state_lock); + if (!old_errno && old_errno != -ESHUTDOWN && + errno == -ESHUTDOWN) + jbd2_journal_update_sb_errno(journal); + return; + } + write_unlock(&journal->j_state_lock); + __jbd2_journal_abort_hard(journal); if (errno) { |