diff options
Diffstat (limited to 'include/linux/ioprio.h')
-rw-r--r-- | include/linux/ioprio.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/include/linux/ioprio.h b/include/linux/ioprio.h index 7578d4f6a969..b25377b6ea98 100644 --- a/include/linux/ioprio.h +++ b/include/linux/ioprio.h @@ -40,14 +40,37 @@ static inline int task_nice_ioclass(struct task_struct *task) { if (task->policy == SCHED_IDLE) return IOPRIO_CLASS_IDLE; - else if (task_is_realtime(task)) + else if (rt_or_dl_task_policy(task)) return IOPRIO_CLASS_RT; else return IOPRIO_CLASS_BE; } #ifdef CONFIG_BLOCK -int __get_task_ioprio(struct task_struct *p); +/* + * If the task has set an I/O priority, use that. Otherwise, return + * the default I/O priority. + * + * Expected to be called for current task or with task_lock() held to keep + * io_context stable. + */ +static inline int __get_task_ioprio(struct task_struct *p) +{ + struct io_context *ioc = p->io_context; + int prio; + + if (!ioc) + return IOPRIO_DEFAULT; + + if (p != current) + lockdep_assert_held(&p->alloc_lock); + + prio = ioc->ioprio; + if (IOPRIO_PRIO_CLASS(prio) == IOPRIO_CLASS_NONE) + prio = IOPRIO_PRIO_VALUE(task_nice_ioclass(p), + task_nice_ioprio(p)); + return prio; +} #else static inline int __get_task_ioprio(struct task_struct *p) { |