Re: [Lse-tech] Re: RFC: patch to allow lock-free traversal of lists with insertion

From: Davide Libenzi (
Date: Wed Oct 10 2001 - 00:29:36 EST

On Wed, 10 Oct 2001, BALBIR SINGH wrote:

> What about cases like the pci device list or any other such list. Sometimes
> you do not care if somebody added something, while you were looking through
> the list as long as you do not get illegal addresses or data.
> Wouldn't this be very useful there? Most of these lists come up
> at system startup and change rearly, but we look through them often.
> Me too, Did I miss something?

What means that changes rarely that you're going to use rarely_lock() ?
If you're going to remove even only 1 element in 1000000 jiffies then
you've to lock.
If your list can only grow, that's different.

- Davide

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