/*
- * linux/fs/checkpoint.c
+ * linux/fs/jbd2/checkpoint.c
*
* Written by Stephen C. Tweedie <sct@redhat.com>, 1999
*
#include <linux/time.h>
#include <linux/fs.h>
-#include <linux/jbd.h>
+#include <linux/jbd2.h>
#include <linux/errno.h>
#include <linux/slab.h>
if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) {
JBUFFER_TRACE(jh, "remove from checkpoint list");
- ret = __journal_remove_checkpoint(jh) + 1;
+ ret = __jbd2_journal_remove_checkpoint(jh) + 1;
jbd_unlock_bh_state(bh);
- journal_remove_journal_head(bh);
+ jbd2_journal_remove_journal_head(bh);
BUFFER_TRACE(bh, "release");
__brelse(bh);
} else {
}
/*
- * __log_wait_for_space: wait until there is space in the journal.
+ * __jbd2_log_wait_for_space: wait until there is space in the journal.
*
* Called under j-state_lock *only*. It will be unlocked if we have to wait
* for a checkpoint to free up some space in the log.
*/
-void __log_wait_for_space(journal_t *journal)
+void __jbd2_log_wait_for_space(journal_t *journal)
{
int nblocks;
assert_spin_locked(&journal->j_state_lock);
nblocks = jbd_space_needed(journal);
- while (__log_space_left(journal) < nblocks) {
- if (journal->j_flags & JFS_ABORT)
+ while (__jbd2_log_space_left(journal) < nblocks) {
+ if (journal->j_flags & JBD2_ABORT)
return;
spin_unlock(&journal->j_state_lock);
mutex_lock(&journal->j_checkpoint_mutex);
*/
spin_lock(&journal->j_state_lock);
nblocks = jbd_space_needed(journal);
- if (__log_space_left(journal) < nblocks) {
+ if (__jbd2_log_space_left(journal) < nblocks) {
spin_unlock(&journal->j_state_lock);
- log_do_checkpoint(journal);
+ jbd2_log_do_checkpoint(journal);
spin_lock(&journal->j_state_lock);
}
mutex_unlock(&journal->j_checkpoint_mutex);
* Now in whatever state the buffer currently is, we know that
* it has been written out and so we can drop it from the list
*/
- released = __journal_remove_checkpoint(jh);
+ released = __jbd2_journal_remove_checkpoint(jh);
jbd_unlock_bh_state(bh);
- journal_remove_journal_head(bh);
+ jbd2_journal_remove_journal_head(bh);
__brelse(bh);
}
}
* Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
*/
static int __process_buffer(journal_t *journal, struct journal_head *jh,
- struct buffer_head **bhs, int *batch_count)
+ struct buffer_head **bhs, int *batch_count,
+ transaction_t *transaction)
{
struct buffer_head *bh = jh2bh(jh);
int ret = 0;
transaction_t *t = jh->b_transaction;
tid_t tid = t->t_tid;
+ transaction->t_chp_stats.cs_forced_to_close++;
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
- log_start_commit(journal, tid);
- log_wait_commit(journal, tid);
+ jbd2_log_start_commit(journal, tid);
+ jbd2_log_wait_commit(journal, tid);
ret = 1;
} else if (!buffer_dirty(bh)) {
J_ASSERT_JH(jh, !buffer_jbddirty(bh));
BUFFER_TRACE(bh, "remove from checkpoint");
- __journal_remove_checkpoint(jh);
+ __jbd2_journal_remove_checkpoint(jh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
- journal_remove_journal_head(bh);
+ jbd2_journal_remove_journal_head(bh);
__brelse(bh);
ret = 1;
} else {
bhs[*batch_count] = bh;
__buffer_relink_io(jh);
jbd_unlock_bh_state(bh);
+ transaction->t_chp_stats.cs_written++;
(*batch_count)++;
if (*batch_count == NR_BATCH) {
spin_unlock(&journal->j_list_lock);
*
* The journal should be locked before calling this function.
*/
-int log_do_checkpoint(journal_t *journal)
+int jbd2_log_do_checkpoint(journal_t *journal)
{
transaction_t *transaction;
tid_t this_tid;
* don't need checkpointing, just eliminate them from the
* journal straight away.
*/
- result = cleanup_journal_tail(journal);
+ result = jbd2_cleanup_journal_tail(journal);
jbd_debug(1, "cleanup_journal_tail returned %d\n", result);
if (result <= 0)
return result;
if (!journal->j_checkpoint_transactions)
goto out;
transaction = journal->j_checkpoint_transactions;
+ if (transaction->t_chp_stats.cs_chp_time == 0)
+ transaction->t_chp_stats.cs_chp_time = jiffies;
this_tid = transaction->t_tid;
restart:
/*
retry = 1;
break;
}
- retry = __process_buffer(journal, jh, bhs,&batch_count);
- if (!retry && lock_need_resched(&journal->j_list_lock)){
+ retry = __process_buffer(journal, jh, bhs, &batch_count,
+ transaction);
+ if (!retry && (need_resched() ||
+ spin_needbreak(&journal->j_list_lock))) {
spin_unlock(&journal->j_list_lock);
retry = 1;
break;
}
out:
spin_unlock(&journal->j_list_lock);
- result = cleanup_journal_tail(journal);
+ result = jbd2_cleanup_journal_tail(journal);
if (result < 0)
return result;
return 0;
* we have an abort error outstanding.
*/
-int cleanup_journal_tail(journal_t *journal)
+int jbd2_cleanup_journal_tail(journal_t *journal)
{
transaction_t * transaction;
tid_t first_tid;
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);
+ if (!(journal->j_flags & JBD2_ABORT))
+ jbd2_journal_update_superblock(journal, 1);
return 0;
}
* Returns number of buffers reaped (for debug)
*/
-int __journal_clean_checkpoint_list(journal_t *journal)
+int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
{
transaction_t *transaction, *last_transaction, *next_transaction;
int ret = 0;
* This function is called with jbd_lock_bh_state(jh2bh(jh))
*/
-int __journal_remove_checkpoint(struct journal_head *jh)
+int __jbd2_journal_remove_checkpoint(struct journal_head *jh)
{
transaction_t *transaction;
journal_t *journal;
/*
* There is one special case to worry about: if we have just pulled the
- * buffer off a committing transaction's forget list, then even if the
- * checkpoint list is empty, the transaction obviously cannot be
- * dropped!
+ * 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 j_committing_transaction is a bit sleazy.
- * See the comment at the end of journal_commit_transaction().
+ * The locking here around t_state is a bit sleazy.
+ * See the comment at the end of jbd2_journal_commit_transaction().
*/
- if (transaction == journal->j_committing_transaction) {
- JBUFFER_TRACE(jh, "belongs to committing 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);
+ __jbd2_journal_drop_transaction(journal, transaction);
/* Just in case anybody was waiting for more transactions to be
checkpointed... */
* Called with the journal locked.
* Called with j_list_lock held.
*/
-void __journal_insert_checkpoint(struct journal_head *jh,
+void __jbd2_journal_insert_checkpoint(struct journal_head *jh,
transaction_t *transaction)
{
JBUFFER_TRACE(jh, "entry");
* Called with j_list_lock held.
*/
-void __journal_drop_transaction(journal_t *journal, transaction_t *transaction)
+void __jbd2_journal_drop_transaction(journal_t *journal, transaction_t *transaction)
{
assert_spin_locked(&journal->j_list_lock);
if (transaction->t_cpnext) {
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