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| author | Jens Axboe <jens.axboe@oracle.com> | 2010-05-18 14:31:45 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-05-21 20:00:25 +0200 |
| commit | f9eadbbd424c083b8005c7b738f644611b9ef489 (patch) | |
| tree | edc73e0fa56de566af7672f6f80579ec317d373f | |
| parent | 7c8a3554c683f512dbcee26faedb42e4c05f12fa (diff) | |
writeback: bdi_writeback_task() must set task state before calling schedule()
Calling schedule without setting the task state to non-running will
return immediately, so ensure that we set it properly and check our
sleep conditions after doing so.
This is a fixup for commit 69b62d01.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | fs/fs-writeback.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 76f546d56a64..437a7431b4ea 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -978,8 +978,13 @@ int bdi_writeback_task(struct bdi_writeback *wb) if (dirty_writeback_interval) { wait_jiffies = msecs_to_jiffies(dirty_writeback_interval * 10); schedule_timeout_interruptible(wait_jiffies); - } else - schedule(); + } else { + set_current_state(TASK_INTERRUPTIBLE); + if (list_empty_careful(&wb->bdi->work_list) && + !kthread_should_stop()) + schedule(); + __set_current_state(TASK_RUNNING); + } try_to_freeze(); } |