Re: [PATCH] percpu_counter : add percpu_counter_add_fast()

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To: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Subject: Re: [PATCH] percpu_counter : add percpu_counter_add_fast()
From: Christoph Lameter <cl@xxxxxxxxx>
Date: Mon, 18 Oct 2010 11:12:31 -0500 (CDT)
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <1287416380.2409.13.camel@edumazet-laptop>
User-agent: Alpine 2.00 (DEB 1167 2008-08-23)

On Mon, 18 Oct 2010, Eric Dumazet wrote:

> Nope, on UP, we dont use a per_cpu field, just a "s64 count".
>
> struct percpu_counter {
>         s64 count;
> };

Ok that is percpu counter specific then.

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References:
- [PATCH 0/17] fs: Inode cache scalability
  - From: Dave Chinner
- [PATCH 16/17] fs: Convert nr_inodes to a per-cpu counter
  - From: Dave Chinner
- Re: [PATCH 16/17] fs: Convert nr_inodes to a per-cpu counter
  - From: Andrew Morton
- Re: [PATCH 16/17] fs: Convert nr_inodes to a per-cpu counter
  - From: Dave Chinner
- Re: [PATCH 16/17] fs: Convert nr_inodes to a per-cpu counter
  - From: Nick Piggin
- Re: [PATCH 16/17] fs: Convert nr_inodes to a per-cpu counter
  - From: Eric Dumazet
- Re: [PATCH 16/17] fs: Convert nr_inodes to a per-cpu counter
  - From: Andrew Morton
- Re: [PATCH 16/17] fs: Convert nr_inodes to a per-cpu counter
  - From: Eric Dumazet
- [PATCH] percpu_counter : add percpu_counter_add_fast()
  - From: Eric Dumazet
- Re: [PATCH] percpu_counter : add percpu_counter_add_fast()
  - From: Christoph Lameter
- Re: [PATCH] percpu_counter : add percpu_counter_add_fast()
  - From: Eric Dumazet

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