diff options
| -rw-r--r-- | fs/xfs/xfs_trans_ail.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c index 354368a906e5..4b1669f9d2b2 100644 --- a/fs/xfs/xfs_trans_ail.c +++ b/fs/xfs/xfs_trans_ail.c @@ -514,11 +514,26 @@ xfsaild( current->flags |= PF_MEMALLOC; set_freezable(); - while (!kthread_should_stop()) { + while (1) { if (tout && tout <= 20) - __set_current_state(TASK_KILLABLE); + set_current_state(TASK_KILLABLE); else - __set_current_state(TASK_INTERRUPTIBLE); + set_current_state(TASK_INTERRUPTIBLE); + + /* + * Check kthread_should_stop() after we set the task state + * to guarantee that we either see the stop bit and exit or + * the task state is reset to runnable such that it's not + * scheduled out indefinitely and detects the stop bit at + * next iteration. + * + * A memory barrier is included in above task state set to + * serialize again kthread_stop(). + */ + if (kthread_should_stop()) { + __set_current_state(TASK_RUNNING); + break; + } spin_lock(&ailp->xa_lock); |