[PATCH] Update cfq io scheduler to time sliced design

This updates the CFQ io scheduler to the new time sliced design (cfq
v3).  It provides full process fairness, while giving excellent
aggregate system throughput even for many competing processes.  It
supports io priorities, either inherited from the cpu nice value or set
directly with the ioprio_get/set syscalls.  The latter closely mimic
set/getpriority.

This import is based on my latest from -mm.

Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jens Axboe 2005-06-27 10:55:12 +02:00 • committed by Linus Torvalds
commit 22e2c507c3
26 changed files with 1685 additions and 692 deletions

View file

@ -263,6 +263,8 @@
#define __NR_add_key 1271
#define __NR_request_key 1272
#define __NR_keyctl 1273
#define __NR_ioprio_set 1274
#define __NR_ioprio_get 1275
#define __NR_set_zone_reclaim 1276
#ifdef __KERNEL__