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block: make __get_task_ioprio() easier to read

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We don't need to do any gymnastics if we don't have an io_context
assigned at all, so just return early with our default priority.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2024-01-08 11:51:57 -07:00
parent 3b7cb74547
commit 53889bcaf5
1 changed files with 4 additions and 4 deletions
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8
include/linux/ioprio.h
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@ -59,13 +59,13 @@ static inline int __get_task_ioprio(struct task_struct *p)
struct io_context *ioc = p->io_context; struct io_context *ioc = p->io_context;
int prio; int prio;
if (!ioc)
return IOPRIO_DEFAULT;
if (p != current) if (p != current)
lockdep_assert_held(&p->alloc_lock); lockdep_assert_held(&p->alloc_lock);
if (ioc)
prio = ioc->ioprio;
else
prio = IOPRIO_DEFAULT;
prio = ioc->ioprio;
if (IOPRIO_PRIO_CLASS(prio) == IOPRIO_CLASS_NONE) if (IOPRIO_PRIO_CLASS(prio) == IOPRIO_CLASS_NONE)
prio = IOPRIO_PRIO_VALUE(task_nice_ioclass(p), prio = IOPRIO_PRIO_VALUE(task_nice_ioclass(p),
task_nice_ioprio(p)); task_nice_ioprio(p));