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![Namhyung Kim](/assets/img/avatar_default.png)
Convert atomic_inc(&bh->b_count) to get_bh(bh) for consistency. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
757 lines
21 KiB
C
757 lines
21 KiB
C
/*
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* linux/fs/jbd/checkpoint.c
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*
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* Written by Stephen C. Tweedie <sct@redhat.com>, 1999
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*
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* Copyright 1999 Red Hat Software --- All Rights Reserved
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*
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* This file is part of the Linux kernel and is made available under
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* the terms of the GNU General Public License, version 2, or at your
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* option, any later version, incorporated herein by reference.
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*
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* Checkpoint routines for the generic filesystem journaling code.
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* Part of the ext2fs journaling system.
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*
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* Checkpointing is the process of ensuring that a section of the log is
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* committed fully to disk, so that that portion of the log can be
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* reused.
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*/
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#include <linux/time.h>
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#include <linux/fs.h>
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#include <linux/jbd.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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/*
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* Unlink a buffer from a transaction checkpoint list.
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*
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* Called with j_list_lock held.
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*/
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static inline void __buffer_unlink_first(struct journal_head *jh)
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{
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transaction_t *transaction = jh->b_cp_transaction;
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jh->b_cpnext->b_cpprev = jh->b_cpprev;
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jh->b_cpprev->b_cpnext = jh->b_cpnext;
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if (transaction->t_checkpoint_list == jh) {
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transaction->t_checkpoint_list = jh->b_cpnext;
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if (transaction->t_checkpoint_list == jh)
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transaction->t_checkpoint_list = NULL;
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}
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}
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/*
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* Unlink a buffer from a transaction checkpoint(io) list.
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*
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* Called with j_list_lock held.
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*/
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static inline void __buffer_unlink(struct journal_head *jh)
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{
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transaction_t *transaction = jh->b_cp_transaction;
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__buffer_unlink_first(jh);
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if (transaction->t_checkpoint_io_list == jh) {
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transaction->t_checkpoint_io_list = jh->b_cpnext;
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if (transaction->t_checkpoint_io_list == jh)
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transaction->t_checkpoint_io_list = NULL;
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}
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}
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/*
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* Move a buffer from the checkpoint list to the checkpoint io list
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*
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* Called with j_list_lock held
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*/
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static inline void __buffer_relink_io(struct journal_head *jh)
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{
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transaction_t *transaction = jh->b_cp_transaction;
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__buffer_unlink_first(jh);
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if (!transaction->t_checkpoint_io_list) {
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jh->b_cpnext = jh->b_cpprev = jh;
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} else {
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jh->b_cpnext = transaction->t_checkpoint_io_list;
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jh->b_cpprev = transaction->t_checkpoint_io_list->b_cpprev;
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jh->b_cpprev->b_cpnext = jh;
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jh->b_cpnext->b_cpprev = jh;
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}
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transaction->t_checkpoint_io_list = jh;
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}
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/*
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* Try to release a checkpointed buffer from its transaction.
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* Returns 1 if we released it and 2 if we also released the
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* whole transaction.
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*
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* Requires j_list_lock
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* Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
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*/
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static int __try_to_free_cp_buf(struct journal_head *jh)
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{
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int ret = 0;
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struct buffer_head *bh = jh2bh(jh);
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if (jh->b_jlist == BJ_None && !buffer_locked(bh) &&
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!buffer_dirty(bh) && !buffer_write_io_error(bh)) {
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JBUFFER_TRACE(jh, "remove from checkpoint list");
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ret = __journal_remove_checkpoint(jh) + 1;
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jbd_unlock_bh_state(bh);
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journal_remove_journal_head(bh);
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BUFFER_TRACE(bh, "release");
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__brelse(bh);
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} else {
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jbd_unlock_bh_state(bh);
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}
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return ret;
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}
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/*
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* __log_wait_for_space: wait until there is space in the journal.
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*
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* Called under j-state_lock *only*. It will be unlocked if we have to wait
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* for a checkpoint to free up some space in the log.
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*/
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void __log_wait_for_space(journal_t *journal)
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{
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int nblocks, space_left;
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assert_spin_locked(&journal->j_state_lock);
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nblocks = jbd_space_needed(journal);
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while (__log_space_left(journal) < nblocks) {
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if (journal->j_flags & JFS_ABORT)
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return;
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spin_unlock(&journal->j_state_lock);
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mutex_lock(&journal->j_checkpoint_mutex);
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/*
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* Test again, another process may have checkpointed while we
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* were waiting for the checkpoint lock. If there are no
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* transactions ready to be checkpointed, try to recover
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* journal space by calling cleanup_journal_tail(), and if
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* that doesn't work, by waiting for the currently committing
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* transaction to complete. If there is absolutely no way
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* to make progress, this is either a BUG or corrupted
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* filesystem, so abort the journal and leave a stack
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* trace for forensic evidence.
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*/
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spin_lock(&journal->j_state_lock);
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spin_lock(&journal->j_list_lock);
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nblocks = jbd_space_needed(journal);
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space_left = __log_space_left(journal);
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if (space_left < nblocks) {
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int chkpt = journal->j_checkpoint_transactions != NULL;
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tid_t tid = 0;
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if (journal->j_committing_transaction)
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tid = journal->j_committing_transaction->t_tid;
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spin_unlock(&journal->j_list_lock);
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spin_unlock(&journal->j_state_lock);
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if (chkpt) {
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log_do_checkpoint(journal);
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} else if (cleanup_journal_tail(journal) == 0) {
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/* We were able to recover space; yay! */
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;
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} else if (tid) {
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log_wait_commit(journal, tid);
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} else {
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printk(KERN_ERR "%s: needed %d blocks and "
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"only had %d space available\n",
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__func__, nblocks, space_left);
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printk(KERN_ERR "%s: no way to get more "
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"journal space\n", __func__);
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WARN_ON(1);
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journal_abort(journal, 0);
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}
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spin_lock(&journal->j_state_lock);
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} else {
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spin_unlock(&journal->j_list_lock);
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}
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mutex_unlock(&journal->j_checkpoint_mutex);
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}
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}
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/*
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* We were unable to perform jbd_trylock_bh_state() inside j_list_lock.
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* The caller must restart a list walk. Wait for someone else to run
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* jbd_unlock_bh_state().
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*/
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static void jbd_sync_bh(journal_t *journal, struct buffer_head *bh)
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__releases(journal->j_list_lock)
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{
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get_bh(bh);
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spin_unlock(&journal->j_list_lock);
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jbd_lock_bh_state(bh);
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jbd_unlock_bh_state(bh);
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put_bh(bh);
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}
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/*
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* Clean up transaction's list of buffers submitted for io.
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* We wait for any pending IO to complete and remove any clean
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* buffers. Note that we take the buffers in the opposite ordering
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* from the one in which they were submitted for IO.
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*
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* Return 0 on success, and return <0 if some buffers have failed
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* to be written out.
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*
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* Called with j_list_lock held.
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*/
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static int __wait_cp_io(journal_t *journal, transaction_t *transaction)
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{
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struct journal_head *jh;
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struct buffer_head *bh;
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tid_t this_tid;
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int released = 0;
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int ret = 0;
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this_tid = transaction->t_tid;
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restart:
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/* Did somebody clean up the transaction in the meanwhile? */
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if (journal->j_checkpoint_transactions != transaction ||
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transaction->t_tid != this_tid)
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return ret;
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while (!released && transaction->t_checkpoint_io_list) {
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jh = transaction->t_checkpoint_io_list;
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bh = jh2bh(jh);
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if (!jbd_trylock_bh_state(bh)) {
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jbd_sync_bh(journal, bh);
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spin_lock(&journal->j_list_lock);
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goto restart;
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}
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if (buffer_locked(bh)) {
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get_bh(bh);
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spin_unlock(&journal->j_list_lock);
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jbd_unlock_bh_state(bh);
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wait_on_buffer(bh);
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/* the journal_head may have gone by now */
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BUFFER_TRACE(bh, "brelse");
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__brelse(bh);
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spin_lock(&journal->j_list_lock);
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goto restart;
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}
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if (unlikely(buffer_write_io_error(bh)))
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ret = -EIO;
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/*
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* Now in whatever state the buffer currently is, we know that
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* it has been written out and so we can drop it from the list
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*/
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released = __journal_remove_checkpoint(jh);
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jbd_unlock_bh_state(bh);
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journal_remove_journal_head(bh);
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__brelse(bh);
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}
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return ret;
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}
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#define NR_BATCH 64
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static void
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__flush_batch(journal_t *journal, struct buffer_head **bhs, int *batch_count)
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{
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int i;
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for (i = 0; i < *batch_count; i++)
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write_dirty_buffer(bhs[i], WRITE);
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for (i = 0; i < *batch_count; i++) {
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struct buffer_head *bh = bhs[i];
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clear_buffer_jwrite(bh);
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BUFFER_TRACE(bh, "brelse");
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__brelse(bh);
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}
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*batch_count = 0;
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}
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/*
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* Try to flush one buffer from the checkpoint list to disk.
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*
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* Return 1 if something happened which requires us to abort the current
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* scan of the checkpoint list. Return <0 if the buffer has failed to
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* be written out.
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*
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* Called with j_list_lock held and drops it if 1 is returned
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* Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
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*/
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static int __process_buffer(journal_t *journal, struct journal_head *jh,
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struct buffer_head **bhs, int *batch_count)
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{
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struct buffer_head *bh = jh2bh(jh);
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int ret = 0;
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if (buffer_locked(bh)) {
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get_bh(bh);
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spin_unlock(&journal->j_list_lock);
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jbd_unlock_bh_state(bh);
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wait_on_buffer(bh);
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/* the journal_head may have gone by now */
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BUFFER_TRACE(bh, "brelse");
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__brelse(bh);
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ret = 1;
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} else if (jh->b_transaction != NULL) {
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transaction_t *t = jh->b_transaction;
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tid_t tid = t->t_tid;
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spin_unlock(&journal->j_list_lock);
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jbd_unlock_bh_state(bh);
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log_start_commit(journal, tid);
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log_wait_commit(journal, tid);
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ret = 1;
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} else if (!buffer_dirty(bh)) {
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ret = 1;
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if (unlikely(buffer_write_io_error(bh)))
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ret = -EIO;
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J_ASSERT_JH(jh, !buffer_jbddirty(bh));
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BUFFER_TRACE(bh, "remove from checkpoint");
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__journal_remove_checkpoint(jh);
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spin_unlock(&journal->j_list_lock);
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jbd_unlock_bh_state(bh);
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journal_remove_journal_head(bh);
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__brelse(bh);
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} else {
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/*
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* Important: we are about to write the buffer, and
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* possibly block, while still holding the journal lock.
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* We cannot afford to let the transaction logic start
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* messing around with this buffer before we write it to
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* disk, as that would break recoverability.
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*/
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BUFFER_TRACE(bh, "queue");
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get_bh(bh);
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J_ASSERT_BH(bh, !buffer_jwrite(bh));
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set_buffer_jwrite(bh);
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bhs[*batch_count] = bh;
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__buffer_relink_io(jh);
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jbd_unlock_bh_state(bh);
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(*batch_count)++;
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if (*batch_count == NR_BATCH) {
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spin_unlock(&journal->j_list_lock);
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__flush_batch(journal, bhs, batch_count);
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ret = 1;
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}
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}
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return ret;
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}
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/*
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* Perform an actual checkpoint. We take the first transaction on the
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* list of transactions to be checkpointed and send all its buffers
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* to disk. We submit larger chunks of data at once.
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*
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* The journal should be locked before calling this function.
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* Called with j_checkpoint_mutex held.
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*/
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int log_do_checkpoint(journal_t *journal)
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{
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transaction_t *transaction;
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tid_t this_tid;
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int result;
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jbd_debug(1, "Start checkpoint\n");
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/*
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* First thing: if there are any transactions in the log which
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* don't need checkpointing, just eliminate them from the
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* journal straight away.
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*/
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result = cleanup_journal_tail(journal);
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jbd_debug(1, "cleanup_journal_tail returned %d\n", result);
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if (result <= 0)
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return result;
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/*
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* OK, we need to start writing disk blocks. Take one transaction
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* and write it.
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*/
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result = 0;
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spin_lock(&journal->j_list_lock);
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if (!journal->j_checkpoint_transactions)
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goto out;
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transaction = journal->j_checkpoint_transactions;
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this_tid = transaction->t_tid;
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restart:
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/*
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* If someone cleaned up this transaction while we slept, we're
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* done (maybe it's a new transaction, but it fell at the same
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* address).
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*/
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if (journal->j_checkpoint_transactions == transaction &&
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transaction->t_tid == this_tid) {
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int batch_count = 0;
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struct buffer_head *bhs[NR_BATCH];
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struct journal_head *jh;
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int retry = 0, err;
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while (!retry && transaction->t_checkpoint_list) {
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struct buffer_head *bh;
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jh = transaction->t_checkpoint_list;
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bh = jh2bh(jh);
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if (!jbd_trylock_bh_state(bh)) {
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jbd_sync_bh(journal, bh);
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retry = 1;
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break;
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}
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retry = __process_buffer(journal, jh, bhs,&batch_count);
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if (retry < 0 && !result)
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result = retry;
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if (!retry && (need_resched() ||
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spin_needbreak(&journal->j_list_lock))) {
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spin_unlock(&journal->j_list_lock);
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retry = 1;
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break;
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}
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}
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if (batch_count) {
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if (!retry) {
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spin_unlock(&journal->j_list_lock);
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retry = 1;
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}
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__flush_batch(journal, bhs, &batch_count);
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}
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if (retry) {
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spin_lock(&journal->j_list_lock);
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goto restart;
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}
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/*
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* Now we have cleaned up the first transaction's checkpoint
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* list. Let's clean up the second one
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*/
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err = __wait_cp_io(journal, transaction);
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if (!result)
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result = err;
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}
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out:
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spin_unlock(&journal->j_list_lock);
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if (result < 0)
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journal_abort(journal, result);
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else
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result = cleanup_journal_tail(journal);
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return (result < 0) ? result : 0;
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}
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/*
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* Check the list of checkpoint transactions for the journal to see if
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* we have already got rid of any since the last update of the log tail
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* in the journal superblock. If so, we can instantly roll the
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* superblock forward to remove those transactions from the log.
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*
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* Return <0 on error, 0 on success, 1 if there was nothing to clean up.
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*
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* Called with the journal lock held.
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*
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* This is the only part of the journaling code which really needs to be
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* aware of transaction aborts. Checkpointing involves writing to the
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* main filesystem area rather than to the journal, so it can proceed
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* even in abort state, but we must not update the super block if
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* checkpointing may have failed. Otherwise, we would lose some metadata
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* buffers which should be written-back to the filesystem.
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*/
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int cleanup_journal_tail(journal_t *journal)
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{
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transaction_t * transaction;
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tid_t first_tid;
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unsigned int blocknr, freed;
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if (is_journal_aborted(journal))
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return 1;
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/* OK, work out the oldest transaction remaining in the log, and
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* the log block it starts at.
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*
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* If the log is now empty, we need to work out which is the
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* next transaction ID we will write, and where it will
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* start. */
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spin_lock(&journal->j_state_lock);
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spin_lock(&journal->j_list_lock);
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transaction = journal->j_checkpoint_transactions;
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if (transaction) {
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first_tid = transaction->t_tid;
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blocknr = transaction->t_log_start;
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} else if ((transaction = journal->j_committing_transaction) != NULL) {
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first_tid = transaction->t_tid;
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blocknr = transaction->t_log_start;
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} else if ((transaction = journal->j_running_transaction) != NULL) {
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first_tid = transaction->t_tid;
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blocknr = journal->j_head;
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} else {
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first_tid = journal->j_transaction_sequence;
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blocknr = journal->j_head;
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}
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spin_unlock(&journal->j_list_lock);
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J_ASSERT(blocknr != 0);
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/* If the oldest pinned transaction is at the tail of the log
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already then there's not much we can do right now. */
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if (journal->j_tail_sequence == first_tid) {
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spin_unlock(&journal->j_state_lock);
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return 1;
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}
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/* OK, update the superblock to recover the freed space.
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* Physical blocks come first: have we wrapped beyond the end of
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* the log? */
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freed = blocknr - journal->j_tail;
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if (blocknr < journal->j_tail)
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freed = freed + journal->j_last - journal->j_first;
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|
|
jbd_debug(1,
|
|
"Cleaning journal tail from %d to %d (offset %u), "
|
|
"freeing %u\n",
|
|
journal->j_tail_sequence, first_tid, blocknr, freed);
|
|
|
|
journal->j_free += freed;
|
|
journal->j_tail_sequence = first_tid;
|
|
journal->j_tail = blocknr;
|
|
spin_unlock(&journal->j_state_lock);
|
|
if (!(journal->j_flags & JFS_ABORT))
|
|
journal_update_superblock(journal, 1);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Checkpoint list management */
|
|
|
|
/*
|
|
* journal_clean_one_cp_list
|
|
*
|
|
* Find all the written-back checkpoint buffers in the given list and release them.
|
|
*
|
|
* Called with the journal locked.
|
|
* Called with j_list_lock held.
|
|
* Returns number of bufers reaped (for debug)
|
|
*/
|
|
|
|
static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
|
|
{
|
|
struct journal_head *last_jh;
|
|
struct journal_head *next_jh = jh;
|
|
int ret, freed = 0;
|
|
|
|
*released = 0;
|
|
if (!jh)
|
|
return 0;
|
|
|
|
last_jh = jh->b_cpprev;
|
|
do {
|
|
jh = next_jh;
|
|
next_jh = jh->b_cpnext;
|
|
/* Use trylock because of the ranking */
|
|
if (jbd_trylock_bh_state(jh2bh(jh))) {
|
|
ret = __try_to_free_cp_buf(jh);
|
|
if (ret) {
|
|
freed++;
|
|
if (ret == 2) {
|
|
*released = 1;
|
|
return freed;
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* This function only frees up some memory
|
|
* if possible so we dont have an obligation
|
|
* to finish processing. Bail out if preemption
|
|
* requested:
|
|
*/
|
|
if (need_resched())
|
|
return freed;
|
|
} while (jh != last_jh);
|
|
|
|
return freed;
|
|
}
|
|
|
|
/*
|
|
* journal_clean_checkpoint_list
|
|
*
|
|
* Find all the written-back checkpoint buffers in the journal and release them.
|
|
*
|
|
* Called with the journal locked.
|
|
* Called with j_list_lock held.
|
|
* Returns number of buffers reaped (for debug)
|
|
*/
|
|
|
|
int __journal_clean_checkpoint_list(journal_t *journal)
|
|
{
|
|
transaction_t *transaction, *last_transaction, *next_transaction;
|
|
int ret = 0;
|
|
int released;
|
|
|
|
transaction = journal->j_checkpoint_transactions;
|
|
if (!transaction)
|
|
goto out;
|
|
|
|
last_transaction = transaction->t_cpprev;
|
|
next_transaction = transaction;
|
|
do {
|
|
transaction = next_transaction;
|
|
next_transaction = transaction->t_cpnext;
|
|
ret += journal_clean_one_cp_list(transaction->
|
|
t_checkpoint_list, &released);
|
|
/*
|
|
* This function only frees up some memory if possible so we
|
|
* dont have an obligation to finish processing. Bail out if
|
|
* preemption requested:
|
|
*/
|
|
if (need_resched())
|
|
goto out;
|
|
if (released)
|
|
continue;
|
|
/*
|
|
* It is essential that we are as careful as in the case of
|
|
* t_checkpoint_list with removing the buffer from the list as
|
|
* we can possibly see not yet submitted buffers on io_list
|
|
*/
|
|
ret += journal_clean_one_cp_list(transaction->
|
|
t_checkpoint_io_list, &released);
|
|
if (need_resched())
|
|
goto out;
|
|
} while (transaction != last_transaction);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* journal_remove_checkpoint: called after a buffer has been committed
|
|
* to disk (either by being write-back flushed to disk, or being
|
|
* committed to the log).
|
|
*
|
|
* We cannot safely clean a transaction out of the log until all of the
|
|
* buffer updates committed in that transaction have safely been stored
|
|
* elsewhere on disk. To achieve this, all of the buffers in a
|
|
* transaction need to be maintained on the transaction's checkpoint
|
|
* lists until they have been rewritten, at which point this function is
|
|
* called to remove the buffer from the existing transaction's
|
|
* checkpoint lists.
|
|
*
|
|
* The function returns 1 if it frees the transaction, 0 otherwise.
|
|
*
|
|
* This function is called with the journal locked.
|
|
* This function is called with j_list_lock held.
|
|
* This function is called with jbd_lock_bh_state(jh2bh(jh))
|
|
*/
|
|
|
|
int __journal_remove_checkpoint(struct journal_head *jh)
|
|
{
|
|
transaction_t *transaction;
|
|
journal_t *journal;
|
|
int ret = 0;
|
|
|
|
JBUFFER_TRACE(jh, "entry");
|
|
|
|
if ((transaction = jh->b_cp_transaction) == NULL) {
|
|
JBUFFER_TRACE(jh, "not on transaction");
|
|
goto out;
|
|
}
|
|
journal = transaction->t_journal;
|
|
|
|
__buffer_unlink(jh);
|
|
jh->b_cp_transaction = NULL;
|
|
|
|
if (transaction->t_checkpoint_list != NULL ||
|
|
transaction->t_checkpoint_io_list != NULL)
|
|
goto out;
|
|
JBUFFER_TRACE(jh, "transaction has no more buffers");
|
|
|
|
/*
|
|
* There is one special case to worry about: if we have just pulled the
|
|
* buffer off a running or committing transaction's checkpoing list,
|
|
* then even if the checkpoint list is empty, the transaction obviously
|
|
* cannot be dropped!
|
|
*
|
|
* The locking here around t_state is a bit sleazy.
|
|
* See the comment at the end of journal_commit_transaction().
|
|
*/
|
|
if (transaction->t_state != T_FINISHED) {
|
|
JBUFFER_TRACE(jh, "belongs to running/committing transaction");
|
|
goto out;
|
|
}
|
|
|
|
/* OK, that was the last buffer for the transaction: we can now
|
|
safely remove this transaction from the log */
|
|
|
|
__journal_drop_transaction(journal, transaction);
|
|
|
|
/* Just in case anybody was waiting for more transactions to be
|
|
checkpointed... */
|
|
wake_up(&journal->j_wait_logspace);
|
|
ret = 1;
|
|
out:
|
|
JBUFFER_TRACE(jh, "exit");
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* journal_insert_checkpoint: put a committed buffer onto a checkpoint
|
|
* list so that we know when it is safe to clean the transaction out of
|
|
* the log.
|
|
*
|
|
* Called with the journal locked.
|
|
* Called with j_list_lock held.
|
|
*/
|
|
void __journal_insert_checkpoint(struct journal_head *jh,
|
|
transaction_t *transaction)
|
|
{
|
|
JBUFFER_TRACE(jh, "entry");
|
|
J_ASSERT_JH(jh, buffer_dirty(jh2bh(jh)) || buffer_jbddirty(jh2bh(jh)));
|
|
J_ASSERT_JH(jh, jh->b_cp_transaction == NULL);
|
|
|
|
jh->b_cp_transaction = transaction;
|
|
|
|
if (!transaction->t_checkpoint_list) {
|
|
jh->b_cpnext = jh->b_cpprev = jh;
|
|
} else {
|
|
jh->b_cpnext = transaction->t_checkpoint_list;
|
|
jh->b_cpprev = transaction->t_checkpoint_list->b_cpprev;
|
|
jh->b_cpprev->b_cpnext = jh;
|
|
jh->b_cpnext->b_cpprev = jh;
|
|
}
|
|
transaction->t_checkpoint_list = jh;
|
|
}
|
|
|
|
/*
|
|
* We've finished with this transaction structure: adios...
|
|
*
|
|
* The transaction must have no links except for the checkpoint by this
|
|
* point.
|
|
*
|
|
* Called with the journal locked.
|
|
* Called with j_list_lock held.
|
|
*/
|
|
|
|
void __journal_drop_transaction(journal_t *journal, transaction_t *transaction)
|
|
{
|
|
assert_spin_locked(&journal->j_list_lock);
|
|
if (transaction->t_cpnext) {
|
|
transaction->t_cpnext->t_cpprev = transaction->t_cpprev;
|
|
transaction->t_cpprev->t_cpnext = transaction->t_cpnext;
|
|
if (journal->j_checkpoint_transactions == transaction)
|
|
journal->j_checkpoint_transactions =
|
|
transaction->t_cpnext;
|
|
if (journal->j_checkpoint_transactions == transaction)
|
|
journal->j_checkpoint_transactions = NULL;
|
|
}
|
|
|
|
J_ASSERT(transaction->t_state == T_FINISHED);
|
|
J_ASSERT(transaction->t_buffers == NULL);
|
|
J_ASSERT(transaction->t_sync_datalist == NULL);
|
|
J_ASSERT(transaction->t_forget == NULL);
|
|
J_ASSERT(transaction->t_iobuf_list == NULL);
|
|
J_ASSERT(transaction->t_shadow_list == NULL);
|
|
J_ASSERT(transaction->t_log_list == NULL);
|
|
J_ASSERT(transaction->t_checkpoint_list == NULL);
|
|
J_ASSERT(transaction->t_checkpoint_io_list == NULL);
|
|
J_ASSERT(transaction->t_updates == 0);
|
|
J_ASSERT(journal->j_committing_transaction != transaction);
|
|
J_ASSERT(journal->j_running_transaction != transaction);
|
|
|
|
jbd_debug(1, "Dropping transaction %d, all done\n", transaction->t_tid);
|
|
kfree(transaction);
|
|
}
|