diff options
| -rw-r--r-- | include/uapi/linux/ioprio.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/include/uapi/linux/ioprio.h b/include/uapi/linux/ioprio.h index 5064e230374c..936f0d8f30e1 100644 --- a/include/uapi/linux/ioprio.h +++ b/include/uapi/linux/ioprio.h @@ -5,12 +5,16 @@ /* * Gives us 8 prio classes with 13-bits of data for each class */ -#define IOPRIO_CLASS_SHIFT (13) +#define IOPRIO_CLASS_SHIFT 13 +#define IOPRIO_CLASS_MASK 0x07 #define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1) -#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT) -#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK) -#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data) +#define IOPRIO_PRIO_CLASS(ioprio) \ + (((ioprio) >> IOPRIO_CLASS_SHIFT) & IOPRIO_CLASS_MASK) +#define IOPRIO_PRIO_DATA(ioprio) ((ioprio) & IOPRIO_PRIO_MASK) +#define IOPRIO_PRIO_VALUE(class, data) \ + ((((class) & IOPRIO_CLASS_MASK) << IOPRIO_CLASS_SHIFT) | \ + ((data) & IOPRIO_PRIO_MASK)) /* * These are the io priority groups as implemented by the BFQ and mq-deadline |