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authorJan Kara <jack@suse.cz>2010-04-15 22:16:24 +0200
committerJan Kara <jack@suse.cz>2010-05-21 19:30:40 +0200
commit03f4d804a1b4748885dc4613a4afe10089a731c8 (patch)
treef2d7be9a0205496f14d61e6a8fe62277e653fab8 /fs/jbd/commit.c
parent311b9549ed2bb0f2c2257781c3e88cb00505e80e (diff)
downloadop-kernel-dev-03f4d804a1b4748885dc4613a4afe10089a731c8.zip
op-kernel-dev-03f4d804a1b4748885dc4613a4afe10089a731c8.tar.gz
jbd: Provide function to check whether transaction will issue data barrier
Provide a function which returns whether a transaction with given tid will send a barrier to the filesystem device. The function will be used by ext3 to detect whether fsync needs to send a separate barrier or not. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/jbd/commit.c')
-rw-r--r--fs/jbd/commit.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index ecb44c9..28a9dda 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -786,6 +786,12 @@ wait_for_iobuf:
jbd_debug(3, "JBD: commit phase 6\n");
+ /* All metadata is written, now write commit record and do cleanup */
+ spin_lock(&journal->j_state_lock);
+ J_ASSERT(commit_transaction->t_state == T_COMMIT);
+ commit_transaction->t_state = T_COMMIT_RECORD;
+ spin_unlock(&journal->j_state_lock);
+
if (journal_write_commit_record(journal, commit_transaction))
err = -EIO;
@@ -923,7 +929,7 @@ restart_loop:
jbd_debug(3, "JBD: commit phase 8\n");
- J_ASSERT(commit_transaction->t_state == T_COMMIT);
+ J_ASSERT(commit_transaction->t_state == T_COMMIT_RECORD);
commit_transaction->t_state = T_FINISHED;
J_ASSERT(commit_transaction == journal->j_committing_transaction);
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