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author | Jens Axboe <axboe@suse.de> | 2006-06-14 03:10:45 -0400 |
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committer | Jens Axboe <axboe@nelson.home.kernel.dk> | 2006-06-23 11:10:39 -0400 |
commit | 35e6077cb16f93517ba5a51ba849b186d2474d60 (patch) | |
tree | 215bcf3548d80365b3cd3673feddf6a8f8ba9fbc /arch | |
parent | b17fd9bceb99610f6dc7998c9a4ed6b71520be2b (diff) |
[PATCH] cfq-iosched: correctly set ioprio on both targets
Patch originally from Vasily Tarasov <vtaras@sw.ru>
If you set io-priority of process 1 using sys_ioprio_set system call by
another process 2 (like ionice do), then cfq_init_prio_data() function
sets priority of process 2 (current) on queue of process 1 and clears
the flag, that designates change of ioprio. So the process 1 will work
like with priority of process 2.
I propose not to call cfq_init_prio_data() on io-priority change, but
only mark queue as queue with changed prority. Every time when new
request comes cfq-scheduler checks for this flag and atomaticaly changes
priority of queue to new value.
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions