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yaml
---
r: 33431
b: refs/heads/master
c: e014ff8
h: refs/heads/master
i:
  33429: 8fb2f10
  33427: 6e96996
  33423: be41c3f
v: v3
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Oleg Nesterov authored and Jens Axboe committed Aug 21, 2006
1 parent d67ddda commit 038d8b0
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Showing 3 changed files with 25 additions and 23 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 9f83e45eb54fc7198dc59fc63255341851ba4c48
refs/heads/master: e014ff8d4285b81f0de0719d8eee72bc50bfd4be
23 changes: 23 additions & 0 deletions trunk/fs/ioprio.c
Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,29 @@ static int get_task_ioprio(struct task_struct *p)
return ret;
}

int ioprio_best(unsigned short aprio, unsigned short bprio)
{
unsigned short aclass = IOPRIO_PRIO_CLASS(aprio);
unsigned short bclass = IOPRIO_PRIO_CLASS(bprio);

if (!ioprio_valid(aprio))
return bprio;
if (!ioprio_valid(bprio))
return aprio;

if (aclass == IOPRIO_CLASS_NONE)
aclass = IOPRIO_CLASS_BE;
if (bclass == IOPRIO_CLASS_NONE)
bclass = IOPRIO_CLASS_BE;

if (aclass == bclass)
return min(aprio, bprio);
if (aclass > bclass)
return bprio;
else
return aprio;
}

asmlinkage long sys_ioprio_get(int which, int who)
{
struct task_struct *g, *p;
Expand Down
23 changes: 1 addition & 22 deletions trunk/include/linux/ioprio.h
Original file line number Diff line number Diff line change
Expand Up @@ -59,27 +59,6 @@ static inline int task_nice_ioprio(struct task_struct *task)
/*
* For inheritance, return the highest of the two given priorities
*/
static inline int ioprio_best(unsigned short aprio, unsigned short bprio)
{
unsigned short aclass = IOPRIO_PRIO_CLASS(aprio);
unsigned short bclass = IOPRIO_PRIO_CLASS(bprio);

if (!ioprio_valid(aprio))
return bprio;
if (!ioprio_valid(bprio))
return aprio;

if (aclass == IOPRIO_CLASS_NONE)
aclass = IOPRIO_CLASS_BE;
if (bclass == IOPRIO_CLASS_NONE)
bclass = IOPRIO_CLASS_BE;

if (aclass == bclass)
return min(aprio, bprio);
if (aclass > bclass)
return bprio;
else
return aprio;
}
extern int ioprio_best(unsigned short aprio, unsigned short bprio);

#endif

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