diff options
| -rw-r--r-- | fs/jbd2/checkpoint.c | 56 | ||||
| -rw-r--r-- | include/linux/jbd2.h | 2 |
2 files changed, 25 insertions, 33 deletions
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 3ab4c5ee12ce..988b32ed4c87 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -421,16 +421,15 @@ int jbd2_cleanup_journal_tail(journal_t *journal) * release them. * * Called with j_list_lock held. - * Returns number of buffers reaped (for debug) + * Returns 1 if we freed the transaction, 0 otherwise. */ - -static int journal_clean_one_cp_list(struct journal_head *jh, int *released) +static int journal_clean_one_cp_list(struct journal_head *jh) { struct journal_head *last_jh; struct journal_head *next_jh = jh; - int ret, freed = 0; + int ret; + int freed = 0; - *released = 0; if (!jh) return 0; @@ -441,11 +440,9 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released) ret = __try_to_free_cp_buf(jh); if (!ret) return freed; - freed++; - if (ret == 2) { - *released = 1; - return freed; - } + if (ret == 2) + return 1; + freed = 1; /* * This function only frees up some memory * if possible so we dont have an obligation @@ -465,53 +462,48 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released) * Find all the written-back checkpoint buffers in the journal and release them. * * Called with j_list_lock held. - * Returns number of buffers reaped (for debug) */ - -int __jbd2_journal_clean_checkpoint_list(journal_t *journal) +void __jbd2_journal_clean_checkpoint_list(journal_t *journal) { transaction_t *transaction, *last_transaction, *next_transaction; int ret; - int freed = 0; - int released; transaction = journal->j_checkpoint_transactions; if (!transaction) - goto out; + return; 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); + ret = journal_clean_one_cp_list(transaction->t_checkpoint_list); /* * 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()) { - freed += ret; - goto out; - } - if (released) { - freed += ret; + if (need_resched()) + return; + if (ret) 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); - freed += ret; - if (need_resched() || !ret) - goto out; + ret = journal_clean_one_cp_list(transaction-> + t_checkpoint_io_list); + if (need_resched()) + return; + /* + * Stop scanning if we couldn't free the transaction. This + * avoids pointless scanning of transactions which still + * weren't checkpointed. + */ + if (!ret) + return; } while (transaction != last_transaction); -out: - return freed; } /* diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 0dae71e9971c..704b9a599b26 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -1042,7 +1042,7 @@ void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block); extern void jbd2_journal_commit_transaction(journal_t *); /* Checkpoint list management */ -int __jbd2_journal_clean_checkpoint_list(journal_t *journal); +void __jbd2_journal_clean_checkpoint_list(journal_t *journal); int __jbd2_journal_remove_checkpoint(struct journal_head *); void __jbd2_journal_insert_checkpoint(struct journal_head *, transaction_t *); |