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From: "Paul Menage" <menage@google.com>
To: "Christoph Lameter" <clameter@sgi.com>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org,
"Nick Piggin" <nickpiggin@yahoo.com.au>,
linux-mm@kvack.org, "Andi Kleen" <ak@suse.de>,
"Paul Jackson" <pj@sgi.com>, "Dave Chinner" <dgc@sgi.com>
Subject: Re: [RFC 8/8] Reduce inode memory usage for systems with a high MAX_NUMNODES
Date: Tue, 16 Jan 2007 11:52:13 -0800 [thread overview]
Message-ID: <6599ad830701161152q75ff29cdo7306c9b8df5c351b@mail.gmail.com> (raw)
In-Reply-To: <20070116054825.15358.65020.sendpatchset@schroedinger.engr.sgi.com>
On 1/15/07, Christoph Lameter <clameter@sgi.com> wrote:
>
> This solution may be a bit hokey. I tried other approaches but this
> one seemed to be the simplest with the least complications. Maybe someone
> else can come up with a better solution?
How about a 64-bit field in struct inode that's used as a bitmask if
there are no more than 64 nodes, and a pointer to a bitmask if there
are more than 64 nodes. The filesystems wouldn't need to be involved
then, as the bitmap allocation could be done in the generic code.
Paul
next prev parent reply other threads:[~2007-01-16 19:52 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-16 5:47 [RFC 0/8] Cpuset aware writeback Christoph Lameter
2007-01-16 5:47 ` [RFC 1/8] Convert higest_possible_node_id() into nr_node_ids Christoph Lameter
2007-01-16 22:05 ` Andi Kleen
2007-01-17 3:14 ` Christoph Lameter
2007-01-17 4:15 ` Andi Kleen
2007-01-17 4:23 ` Christoph Lameter
2007-01-16 5:47 ` [RFC 2/8] Add a map to inodes to track dirty pages per node Christoph Lameter
2007-01-16 5:47 ` [RFC 3/8] Add a nodemask to pdflush functions Christoph Lameter
2007-01-16 5:48 ` [RFC 4/8] Per cpuset dirty ratio handling and writeout Christoph Lameter
2007-01-16 5:48 ` [RFC 5/8] Make writeout during reclaim cpuset aware Christoph Lameter
2007-01-16 22:07 ` Andi Kleen
2007-01-17 4:20 ` Paul Jackson
2007-01-17 4:28 ` Andi Kleen
2007-01-17 4:36 ` Paul Jackson
2007-01-17 5:59 ` Andi Kleen
2007-01-17 6:19 ` Christoph Lameter
2007-01-17 4:23 ` Christoph Lameter
2007-01-16 5:48 ` [RFC 6/8] Throttle vm writeout per cpuset Christoph Lameter
2007-01-16 5:48 ` [RFC 7/8] Exclude unreclaimable pages from dirty ration calculation Christoph Lameter
2007-01-18 15:48 ` Nikita Danilov
2007-01-18 19:56 ` Christoph Lameter
2007-01-16 5:48 ` [RFC 8/8] Reduce inode memory usage for systems with a high MAX_NUMNODES Christoph Lameter
2007-01-16 19:52 ` Paul Menage [this message]
2007-01-16 20:00 ` Christoph Lameter
2007-01-16 20:06 ` Paul Menage
2007-01-16 20:51 ` Christoph Lameter
2007-01-16 7:38 ` [RFC 0/8] Cpuset aware writeback Peter Zijlstra
2007-01-16 20:10 ` Christoph Lameter
2007-01-16 9:25 ` Paul Jackson
2007-01-16 17:13 ` Christoph Lameter
2007-01-16 21:53 ` Andrew Morton
2007-01-16 22:08 ` [PATCH] nfs: fix congestion control Peter Zijlstra
2007-01-16 22:27 ` Trond Myklebust
2007-01-17 2:41 ` Peter Zijlstra
2007-01-17 6:15 ` Trond Myklebust
2007-01-17 8:49 ` Peter Zijlstra
2007-01-17 13:50 ` Trond Myklebust
2007-01-17 14:29 ` Peter Zijlstra
2007-01-17 14:45 ` Trond Myklebust
2007-01-17 20:05 ` Christoph Lameter
2007-01-17 21:52 ` Peter Zijlstra
2007-01-17 21:54 ` Trond Myklebust
2007-01-18 13:27 ` Peter Zijlstra
2007-01-18 15:49 ` Trond Myklebust
2007-01-19 9:33 ` Peter Zijlstra
2007-01-19 13:07 ` Peter Zijlstra
2007-01-19 16:51 ` Trond Myklebust
2007-01-19 17:54 ` Peter Zijlstra
2007-01-19 17:20 ` Christoph Lameter
2007-01-19 17:57 ` Peter Zijlstra
2007-01-19 18:02 ` Christoph Lameter
2007-01-19 18:26 ` Trond Myklebust
2007-01-19 18:27 ` Christoph Lameter
2007-01-20 7:01 ` [PATCH] nfs: fix congestion control -v3 Peter Zijlstra
2007-01-22 16:12 ` Trond Myklebust
2007-01-25 15:32 ` [PATCH] nfs: fix congestion control -v4 Peter Zijlstra
2007-01-26 5:02 ` Andrew Morton
2007-01-26 8:00 ` Peter Zijlstra
2007-01-26 8:50 ` Peter Zijlstra
2007-01-26 5:09 ` Andrew Morton
2007-01-26 5:31 ` Christoph Lameter
2007-01-26 6:04 ` Andrew Morton
2007-01-26 6:53 ` Christoph Lameter
2007-01-26 8:03 ` Peter Zijlstra
2007-01-26 8:51 ` Andrew Morton
2007-01-26 9:01 ` Peter Zijlstra
2007-02-20 12:59 ` Peter Zijlstra
2007-01-22 17:59 ` [PATCH] nfs: fix congestion control -v3 Christoph Lameter
2007-01-17 23:15 ` [PATCH] nfs: fix congestion control Christoph Hellwig
2007-01-16 22:15 ` [RFC 0/8] Cpuset aware writeback Christoph Lameter
2007-01-16 23:40 ` Andrew Morton
2007-01-17 0:16 ` Christoph Lameter
2007-01-17 1:07 ` Andrew Morton
2007-01-17 1:30 ` Christoph Lameter
2007-01-17 2:34 ` Andrew Morton
2007-01-17 3:40 ` Christoph Lameter
2007-01-17 4:02 ` Paul Jackson
2007-01-17 4:05 ` Andrew Morton
2007-01-17 6:27 ` Christoph Lameter
2007-01-17 7:00 ` Andrew Morton
2007-01-17 8:01 ` Paul Jackson
2007-01-17 9:57 ` Andrew Morton
2007-01-17 19:43 ` Christoph Lameter
2007-01-17 22:10 ` Andrew Morton
2007-01-18 1:10 ` Christoph Lameter
2007-01-18 1:25 ` Andrew Morton
2007-01-18 5:21 ` Christoph Lameter
2007-01-16 23:44 ` David Chinner
2007-01-16 22:01 ` Andi Kleen
2007-01-16 22:18 ` Christoph Lameter
2007-02-02 1:38 ` Ethan Solomita
2007-02-02 2:16 ` Christoph Lameter
2007-02-02 4:03 ` Andrew Morton
2007-02-02 5:29 ` Christoph Lameter
2007-02-02 6:02 ` Neil Brown
2007-02-02 6:17 ` Christoph Lameter
2007-02-02 6:41 ` Neil Brown
2007-02-02 7:12 ` Andrew Morton
2007-03-21 21:11 ` Ethan Solomita
2007-03-21 21:29 ` Christoph Lameter
2007-03-21 21:52 ` Andrew Morton
2007-03-21 21:57 ` Christoph Lameter
2007-04-19 2:07 ` Ethan Solomita
2007-04-19 2:55 ` Christoph Lameter
2007-04-19 7:52 ` Ethan Solomita
2007-04-19 16:03 ` Christoph Lameter
2007-04-21 1:37 ` Ethan Solomita
2007-04-21 1:48 ` Christoph Lameter
2007-04-21 8:15 ` Ethan Solomita
2007-04-21 15:40 ` Christoph Lameter
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