diff options
Diffstat (limited to 'fs/jbd2/transaction.c')
| -rw-r--r-- | fs/jbd2/transaction.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 526533062548..d0a8b017b281 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -33,6 +33,35 @@ static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh); static void __jbd2_journal_unfile_buffer(struct journal_head *jh); +static struct kmem_cache *transaction_cache; +int __init jbd2_journal_init_transaction_cache(void) +{ + J_ASSERT(!transaction_cache); + transaction_cache = kmem_cache_create("jbd2_transaction_s", + sizeof(transaction_t), + 0, + SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY, + NULL); + if (transaction_cache) + return 0; + return -ENOMEM; +} + +void jbd2_journal_destroy_transaction_cache(void) +{ + if (transaction_cache) { + kmem_cache_destroy(transaction_cache); + transaction_cache = NULL; + } +} + +void jbd2_journal_free_transaction(transaction_t *transaction) +{ + if (unlikely(ZERO_OR_NULL_PTR(transaction))) + return; + kmem_cache_free(transaction_cache, transaction); +} + /* * jbd2_get_transaction: obtain a new transaction_t object. * @@ -133,7 +162,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle, alloc_transaction: if (!journal->j_running_transaction) { - new_transaction = kzalloc(sizeof(*new_transaction), gfp_mask); + new_transaction = kmem_cache_alloc(transaction_cache, + gfp_mask | __GFP_ZERO); if (!new_transaction) { /* * If __GFP_FS is not present, then we may be @@ -162,7 +192,7 @@ repeat: if (is_journal_aborted(journal) || (journal->j_errno != 0 && !(journal->j_flags & JBD2_ACK_ERR))) { read_unlock(&journal->j_state_lock); - kfree(new_transaction); + jbd2_journal_free_transaction(new_transaction); return -EROFS; } @@ -284,7 +314,7 @@ repeat: read_unlock(&journal->j_state_lock); lock_map_acquire(&handle->h_lockdep_map); - kfree(new_transaction); + jbd2_journal_free_transaction(new_transaction); return 0; } |