diff options
| -rw-r--r-- | fs/jbd/transaction.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index ed886e6db399..73242ba7c7b1 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -1686,35 +1686,6 @@ out: return; } -/* - * journal_try_to_free_buffers() could race with journal_commit_transaction() - * The latter might still hold the a count on buffers when inspecting - * them on t_syncdata_list or t_locked_list. - * - * journal_try_to_free_buffers() will call this function to - * wait for the current transaction to finish syncing data buffers, before - * tryinf to free that buffer. - * - * Called with journal->j_state_lock held. - */ -static void journal_wait_for_transaction_sync_data(journal_t *journal) -{ - transaction_t *transaction = NULL; - tid_t tid; - - spin_lock(&journal->j_state_lock); - transaction = journal->j_committing_transaction; - - if (!transaction) { - spin_unlock(&journal->j_state_lock); - return; - } - - tid = transaction->t_tid; - spin_unlock(&journal->j_state_lock); - log_wait_commit(journal, tid); -} - /** * int journal_try_to_free_buffers() - try to free page buffers. * @journal: journal for operation @@ -1786,25 +1757,6 @@ int journal_try_to_free_buffers(journal_t *journal, ret = try_to_free_buffers(page); - /* - * There are a number of places where journal_try_to_free_buffers() - * could race with journal_commit_transaction(), the later still - * holds the reference to the buffers to free while processing them. - * try_to_free_buffers() failed to free those buffers. Some of the - * caller of releasepage() request page buffers to be dropped, otherwise - * treat the fail-to-free as errors (such as generic_file_direct_IO()) - * - * So, if the caller of try_to_release_page() wants the synchronous - * behaviour(i.e make sure buffers are dropped upon return), - * let's wait for the current transaction to finish flush of - * dirty data buffers, then try to free those buffers again, - * with the journal locked. - */ - if (ret == 0 && (gfp_mask & __GFP_WAIT) && (gfp_mask & __GFP_FS)) { - journal_wait_for_transaction_sync_data(journal); - ret = try_to_free_buffers(page); - } - busy: return ret; } |