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-rw-r--r--fs/jbd/transaction.c48
1 files changed, 0 insertions, 48 deletions
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index ed886e6..73242ba 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;
}
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