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| author | Takashi Iwai <tiwai@suse.de> | 2009-01-17 12:01:12 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-01-17 12:01:12 +0100 |
| commit | d1a020050c6ce1a0794ff73582ccf47e4db536f7 (patch) | |
| tree | 1b7250410f24703cd77c76156e758db9887137aa /fs/jbd/commit.c | |
| parent | dc61b66fc724f89d357c43e2319d2cb7bec1e517 (diff) | |
| parent | 641b4879444c0edb276fedca5c2fcbd2e5c70044 (diff) | |
Merge branch 'topic/usb-mixer-cache' into next/usb-audio
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 25719d902c51..3fbffb1ea714 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 && |