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| author | Jan Kara <jack@suse.cz> | 2011-05-24 11:59:18 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-05-24 11:59:18 -0400 |
| commit | bbd2be36910728f485ac78ea36e0f4f5a38e691e (patch) | |
| tree | 6a45da5a6ef8bafe9614de5fac68cce1fe4e13ec /fs/jbd2/commit.c | |
| parent | 81be12c8179c1c397d3f179cdd9b3f7146cf47f1 (diff) | |
| download | op-kernel-dev-bbd2be36910728f485ac78ea36e0f4f5a38e691e.zip op-kernel-dev-bbd2be36910728f485ac78ea36e0f4f5a38e691e.tar.gz | |
jbd2: Add function jbd2_trans_will_send_data_barrier()
Provide a function which returns whether a transaction with given tid
will send a flush to the filesystem device. The function will be used
by ext4 to detect whether fsync needs to send a separate flush or not.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/commit.c')
| -rw-r--r-- | fs/jbd2/commit.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 2d5095e..5b506e5 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -677,6 +677,10 @@ start_journal_io: err = 0; } + write_lock(&journal->j_state_lock); + J_ASSERT(commit_transaction->t_state == T_COMMIT); + commit_transaction->t_state = T_COMMIT_DFLUSH; + write_unlock(&journal->j_state_lock); /* * If the journal is not located on the file system device, * then we must flush the file system device before we issue @@ -804,6 +808,10 @@ wait_for_iobuf: jbd2_journal_abort(journal, err); jbd_debug(3, "JBD: commit phase 5\n"); + write_lock(&journal->j_state_lock); + J_ASSERT(commit_transaction->t_state == T_COMMIT_DFLUSH); + commit_transaction->t_state = T_COMMIT_JFLUSH; + write_unlock(&journal->j_state_lock); if (!JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) { @@ -959,7 +967,7 @@ restart_loop: jbd_debug(3, "JBD: commit phase 7\n"); - J_ASSERT(commit_transaction->t_state == T_COMMIT); + J_ASSERT(commit_transaction->t_state == T_COMMIT_JFLUSH); commit_transaction->t_start = jiffies; stats.run.rs_logging = jbd2_time_diff(stats.run.rs_logging, |
