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* reorder struct prop_local_single to remove padding on 64 bit buildsRichard Kennedy2008-08-15
| | | | | | | | | | reorder structure to remove 8 bytes of padding on 64 bit builds (also removes 8 bytes from task_struct) Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Cc: peterz@infradead.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
* mm: bdi: allow setting a maximum for the bdi dirty limitPeter Zijlstra2008-04-30
| | | | | | | | | | | | | | | | | Add "max_ratio" to /sys/class/bdi. This indicates the maximum percentage of the global dirty threshold allocated to this bdi. [mszeredi@suse.cz] - fix parsing in max_ratio_store(). - export bdi_set_max_ratio() to modules - limit bdi_dirty with bdi->max_ratio - document new sysfs attribute Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib: floating proportionsPeter Zijlstra2007-10-17
Given a set of objects, floating proportions aims to efficiently give the proportional 'activity' of a single item as compared to the whole set. Where 'activity' is a measure of a temporal property of the items. It is efficient in that it need not inspect any other items of the set in order to provide the answer. It is not even needed to know how many other items there are. It has one parameter, and that is the period of 'time' over which the 'activity' is measured. 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>