Re: [PATCH] vfs: fix race in rcu lookup of pruned dentry

Linus Torvalds
2011-07-17T23:39:16Z

On Sun, Jul 17, 2011 at 4:16 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
>
> OR
>
>  - keep part of the patch from Hugh, treating negative in RCU mode as
> "need to unlazy".

No, urgh, that's horrible.

Not being able to do an RCU lookup of negative dentries would be
really sad. There are some loads where a negative dentry is the
*common* case.

Linus