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

From: Linus Torvalds
Date: Sun Jul 17 2011 - 19:39:21 EST

On Sun, Jul 17, 2011 at 4:16 PM, Al Viro <viro@xxxxxxxxxxxxxxxxxx> 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.

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