Messages in this thread |  | | Date | Wed, 06 Mar 2002 11:04:01 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH] struct page shrinkage |
| |
Bulent Abali wrote: > > extern struct page_state { > unsigned long nr_dirty; > unsigned long nr_locked; > } ____cacheline_aligned page_states[NR_CPUS]; > > This is perfect. Looks like, if a run summation over all the CPUs I will > get the total locked and dirty pages, provided mm.h macros are respected.
That's correct. And the mm.h macros *are* respected. That patch ensures that they are.
It goes as far as to rename PG_locked and PG_dirty to PG_locked_dontuse and PG_dirty_dontuse.
I'll be adding page_cache_size to the above struct, at least.
The "run summation" function is already there, btw: get_page_state().
> What is the outlook for inclusion of this patch in the main kernel? Do you > plan to submit or have been included yet?
Well it's all a part of a work to aggressively improve the efficiency of regular file I/O. I don't know if the big grand plan will be successful yet. At this time, it's thumbs up - way up.
Nor do I know if this is a direction in which Linus wishes to take his kernel.
But this change, the readahead changes, the pdflush pool and a few other pieces I have planned are probably appropriate for the base kernel irrespective of the end outcome.
We'll see...
- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |