| From | Daniel Phillips <> | Subject | Re: [PATCH 04/29] mm: kmem_estimate_pages() | Date | Fri, 14 Dec 2007 14:05:38 -0800 |
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On Friday 14 December 2007 07:39, Peter Zijlstra wrote: > Provide a method to get the upper bound on the pages needed to > allocate a given number of objects from a given kmem_cache. > > This lays the foundation for a generic reserve framework as presented > in a later patch in this series. This framework needs to convert > object demand (kmalloc() bytes, kmem_cache_alloc() objects) to pages.
And hence the big idea that all reserve accounting can be done in units of pages, allowing the use of a single global reserve that already exists.
The other big idea here is that reserve accounting can be independent of the actual resource allocations. This is a powerful idea which we may not have explained clearly yet.
Daniel
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