diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2007-10-16 23:25:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:42:45 -0700 |
| commit | 3e26c149c358529b1605f8959341d34bc4b880a3 (patch) | |
| tree | 9d173b1753b86bcf03a8591e2509e3162234447c /include | |
| parent | 04fbfdc14e5f48463820d6b9807daa5e9c92c51f (diff) | |
mm: dirty balancing for tasks
Based on ideas of Andrew:
http://marc.info/?l=linux-kernel&m=102912915020543&w=2
Scale the bdi dirty limit inversly with the tasks dirty rate.
This makes heavy writers have a lower dirty limit than the occasional writer.
Andrea proposed something similar:
http://lwn.net/Articles/152277/
The main disadvantage to his patch is that he uses an unrelated quantity to
measure time, which leaves him with a workload dependant tunable. Other than
that the two approaches appear quite similar.
[akpm@linux-foundation.org: fix warning]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/init_task.h | 1 | ||||
| -rw-r--r-- | include/linux/sched.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 513bc3e489f0..3a619f57a2b2 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -171,6 +171,7 @@ extern struct group_info init_groups; [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ }, \ + .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \ INIT_TRACE_IRQFLAGS \ INIT_LOCKDEP \ } diff --git a/include/linux/sched.h b/include/linux/sched.h index 592e3a55f818..59738efff8ad 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -74,6 +74,7 @@ struct sched_param { #include <linux/pid.h> #include <linux/percpu.h> #include <linux/topology.h> +#include <linux/proportions.h> #include <linux/seccomp.h> #include <linux/rcupdate.h> #include <linux/futex.h> @@ -1149,6 +1150,7 @@ struct task_struct { #ifdef CONFIG_FAULT_INJECTION int make_it_fail; #endif + struct prop_local_single dirties; }; /* |