diff options
| author | Damien Le Moal <damien.lemoal@wdc.com> | 2021-08-11 12:36:59 +0900 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-18 07:21:11 -0600 |
| commit | a553a835ca57668b0d9907d8ec2507ec51292d9a (patch) | |
| tree | 1d9f304bbc3e11244f921f46b5e88bf3e98c88c0 /include/linux/ioprio.h | |
| parent | 25bca50e523cbe96c0207fbb92f22ff2bc28e9aa (diff) | |
block: change ioprio_valid() to an inline function
Change the ioprio_valid() macro in include/usapi/linux/ioprio.h to an
inline function declared on the kernel side in include/linux/ioprio.h.
Also improve checks on the class value by checking the upper bound
value.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Link: https://lore.kernel.org/r/20210811033702.368488-4-damien.lemoal@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/ioprio.h')
| -rw-r--r-- | include/linux/ioprio.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/ioprio.h b/include/linux/ioprio.h index ef9ad4fb245f..2ee3373684b1 100644 --- a/include/linux/ioprio.h +++ b/include/linux/ioprio.h @@ -9,6 +9,16 @@ #include <uapi/linux/ioprio.h> /* + * Check that a priority value has a valid class. + */ +static inline bool ioprio_valid(unsigned short ioprio) +{ + unsigned short class = IOPRIO_PRIO_CLASS(ioprio); + + return class > IOPRIO_CLASS_NONE && class <= IOPRIO_CLASS_IDLE; +} + +/* * if process has set io priority explicitly, use that. if not, convert * the cpu scheduler nice value to an io priority */ |