netdev - Re: [PATCH 04/29] mm: kmem_estimate

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 14 Dec 2007 14:05:38 -0800
From:	Daniel Phillips <phillips@...nq.net>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	netdev@...r.kernel.org, trond.myklebust@....uio.no
Subject: Re: [PATCH 04/29] mm: kmem_estimate_pages()

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
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html