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| author | Theodore Ts'o <tytso@mit.edu> | 2009-01-03 20:27:38 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-01-03 20:27:38 -0500 |
| commit | 30773840c19cea60dcef39545960d541b1ac1cf8 (patch) | |
| tree | f220a2dce451a40dc7264e8fd70c77c5a3908873 /fs/jbd2/transaction.c | |
| parent | d7cfa4684d82f58e5d7cb73b8a3c88c169937f25 (diff) | |
| download | linux-30773840c19cea60dcef39545960d541b1ac1cf8.tar.gz linux-30773840c19cea60dcef39545960d541b1ac1cf8.tar.bz2 linux-30773840c19cea60dcef39545960d541b1ac1cf8.zip | |
ext4: add fsync batch tuning knobs
Add new mount options, min_batch_time and max_batch_time, which
controls how long the jbd2 layer should wait for additional filesystem
operations to get batched with a synchronous write transaction.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/transaction.c')
| -rw-r--r-- | fs/jbd2/transaction.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 13dcbc990f41..48c21bac5a56 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -1255,8 +1255,10 @@ int jbd2_journal_stop(handle_t *handle) trans_time = ktime_to_ns(ktime_sub(ktime_get(), transaction->t_start_time)); + commit_time = max_t(u64, commit_time, + 1000*journal->j_min_batch_time); commit_time = min_t(u64, commit_time, - 1000*jiffies_to_usecs(1)); + 1000*journal->j_max_batch_time); if (trans_time < commit_time) { ktime_t expires = ktime_add_ns(ktime_get(), |