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block: Return effective IO priority from get_current_ioprio()

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get_current_ioprio() is used to initialize IO priority of various
requests. As such it should be returning the effective IO priority of
the task (i.e., reflecting the fact that unset IO priority should get
set based on task's CPU priority) so that the conversion is concentrated
in one place.

Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220623074840.5960-2-jack@suse.cz
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jan Kara 2022-06-23 09:48:27 +02:00 committed by Jens Axboe
parent e589f46445
commit f7eda40287
1 changed files with 9 additions and 2 deletions
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11
include/linux/ioprio.h
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@ -53,10 +53,17 @@ static inline int task_nice_ioclass(struct task_struct *task)
static inline int get_current_ioprio(void)
{
struct io_context *ioc = current->io_context;
int prio;
if (ioc)
return ioc->ioprio;
return IOPRIO_DEFAULT;
prio = ioc->ioprio;
else
prio = IOPRIO_DEFAULT;
if (IOPRIO_PRIO_CLASS(prio) == IOPRIO_CLASS_NONE)
prio = IOPRIO_PRIO_VALUE(task_nice_ioclass(current),
task_nice_ioprio(current));
return prio;
}
/*