Re: [PATCH 5/6] IMA: use rbtree instead of radix tree for inodeinformation cache

[Linus Torvalds]

On Wed, Oct 20, 2010 at 3:47 PM, Trond Myklebust
<Trond.Myklebust@xxxxxxxxxx> wrote:
>
> That is a really interesting alternative to traditional locking. Could
> we perhaps document it in Documentation/rbtree.txt?

Well, I'd actually suggest avoiding it unless you feel that you
_really_ need it. So I wouldn't want to really suggest it as a generic
locking model - you had better have looked at pretty much all other
alternatives first.  And if that seqlock starts failing a lot under
load, it ends up being _more_ expensive than just taking the lock in
the first place.

                         Linus
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