On 8/6/21 7:11 AM, Damien Le Moal wrote:
The default IO priority is the best effort (BE) class with the
normal priority level IOPRIO_NORM (4). However, get_task_ioprio()
returns IOPRIO_CLASS_NONE/IOPRIO_NORM as the default priority and
get_current_ioprio() returns IOPRIO_CLASS_NONE/0. Let's be consistent
with the defined default and have both of these functions return the
default priority IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM) when
the user did not define another default IO priority for the task.
In include/linux/ioprio.h, rename the IOPRIO_NORM macro to
IOPRIO_BE_NORM to clarify that this default level applies to the BE
priotity class. Also, define the macro IOPRIO_DEFAULT as
IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_BE_NORM) and use this new
macro when setting a priority to the default.
Signed-off-by: Damien Le Moal <[email protected]>
---
block/bfq-iosched.c | 2 +-
block/ioprio.c | 6 +++---
drivers/nvme/host/lightnvm.c | 2 +-
include/linux/ioprio.h | 7 ++++++-
include/uapi/linux/ioprio.h | 4 ++--
5 files changed, 13 insertions(+), 8 deletions(-)
Reviewed-by: Hannes Reinecke <[email protected]>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
[email protected] +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
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