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| author | Ingo Molnar <mingo@elte.hu> | 2009-01-11 03:41:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-11 03:41:39 +0100 |
| commit | abede81c4fb2e3b85d8760f25e3da39d2c69a134 (patch) | |
| tree | 26c893ec108d837eb9171d678c55a1cea7b22af4 /fs/jbd/commit.c | |
| parent | c9d557c19f94df42db78d4a5de4d25feee694bad (diff) | |
| parent | c59765042f53a79a7a65585042ff463b69cb248c (diff) | |
Merge commit 'v2.6.29-rc1' into core/urgent
Diffstat (limited to 'fs/jbd/commit.c')
| -rw-r--r-- | fs/jbd/commit.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c index 25719d902c5..3fbffb1ea71 100644 --- a/fs/jbd/commit.c +++ b/fs/jbd/commit.c @@ -306,6 +306,8 @@ void journal_commit_transaction(journal_t *journal) int flags; int err; unsigned long blocknr; + ktime_t start_time; + u64 commit_time; char *tagp = NULL; journal_header_t *header; journal_block_tag_t *tag = NULL; @@ -418,6 +420,7 @@ void journal_commit_transaction(journal_t *journal) commit_transaction->t_state = T_FLUSH; journal->j_committing_transaction = commit_transaction; journal->j_running_transaction = NULL; + start_time = ktime_get(); commit_transaction->t_log_start = journal->j_head; wake_up(&journal->j_wait_transaction_locked); spin_unlock(&journal->j_state_lock); @@ -913,6 +916,18 @@ restart_loop: J_ASSERT(commit_transaction == journal->j_committing_transaction); journal->j_commit_sequence = commit_transaction->t_tid; journal->j_committing_transaction = NULL; + commit_time = ktime_to_ns(ktime_sub(ktime_get(), start_time)); + + /* + * weight the commit time higher than the average time so we don't + * react too strongly to vast changes in commit time + */ + if (likely(journal->j_average_commit_time)) + journal->j_average_commit_time = (commit_time*3 + + journal->j_average_commit_time) / 4; + else + journal->j_average_commit_time = commit_time; + spin_unlock(&journal->j_state_lock); if (commit_transaction->t_checkpoint_list == NULL && |