Re: [PATCH] more autofs4 fixes for 2.3.99-pre5

[H. Peter Anvin]

Jeremy Fitzhardinge wrote:
> 
> However because I can't keep persistent information attached to a dentry,
> I may need to add some lightweight skeleton to remember it.  Otherwise
> you can really kill a machine's performance with lots of rapid failing
> requests.
> 

Actually, that's something that autofs v3 *does* keep in the dentry; by
keeping a negative dentry which eventually gets invalidated (by using a
timer.)  That works great in the case of requests that fail quickly.  I
don't worry too much about stuff that fail during mount, since the mount
tends to be a rate limiter anyway.

        -hpa