Re: [PATCH net-next 0/5] sctp: use transport hashtable to replace association's with rhashtable

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On Wed, 2015-12-30 at 15:32 -0200, Marcelo Ricardo Leitner wrote:
> On Wed, Dec 30, 2015 at 12:19:39PM -0500, Eric Dumazet wrote:
> > On Wed, 2015-12-30 at 23:50 +0800, Xin Long wrote:
> > 
> > > besides, this patchset will use transport hashtable to replace
> > > association hashtable to lookup with rhashtable api. get transport
> > > first then get association by t->asoc. and also it will make tcp
> > > style work better.
> > 
> > SCTP already has a hash table, why not simply changing the way items are
> > hashed into it ?
> 
> Because Vlad asked to split the patch so it gets easier to review. The
> direct change was quite big.
> 
> > Sure, storing thousands of sockets in a single hash bucket is not wise.
> > 
> > Switching SCTP to rhashtable at this moment is premature, it is still
> > moving fast.
> 
> Dave and Vlad had asked in the first review for considering using
> rhashtable (ok, Dave didn't mention it by name).  We did, and it seemed
> nice beside 1 issue Xin found, regarding multiple rehashing, which I'll
> highlight in a reply right away. 
> Said all this, I know this was your second email already against this
> usage, but I have to ask, sorry: still really against it?

Well, it seems that Dave is OK to fix all remaining bugs in rhashtable.

I was not aware that 'we' decided to force rhashtable all over the
places, because it looks so sexy and fun.

Let see how funny it will be then.


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