Re: multiple vnodes for same file?

[yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi)]

hi,

> On Mon, Jul 02, 2012 at 05:21:24AM +0000, YAMAMOTO Takashi wrote:
>> i don't understand.
>> name cache is looked up with (parent vnode, component name).
>> why and how do you check the userland cookie?
> 
> This is how it works:
> - check cname ache
> - if cache hit with valid TTL, return result
> - perfom lookup, get userland cookie
> - call puffs_cookie2vnode() to retreive existing vnode
> - if it exists, return it, otherwise create a new vnode
> 
> The bug is that puffs_cookie2vnode() is not called if wre have
> cache hit AND expired TTL AND successful lookup, and I use
> the vnode from cache regardless if it is matching userland cookie.

while an expired TTL means puffs can consult userland, it doesn't
mean the vnode associated to the cache entry can be stale (reclaimed),
does it?

YAMAMOTO Takashi

> 
> -- 
> Emmanuel Dreyfus
> manu%netbsd.org@localhost