Large Mailbox Append Fix

[David Carter]

On Thu, 20 Sep 2007, Bron Gondwana wrote:

> Actually, I'm not 100% sure that it's the only way to do things, but it 
> was not particularly invasive and a small extra amount of CPU time and 
> memory copying in exchange for a large saving on replica IO has made our 
> servers a lot happier about users with big mailboxes being moved!

Definitely an improvement over the repeatupload stuff. It would make sense 
for upload_messages_from() to also use index_list_work(), although the 
chance of a monster UPLOAD from a normal append is much lower.

I would prefer sync_index_list_free() to be called in the parent routine 
upload_messages_list() rather than as a side effect to index_list_work(), 
but that is probably just personal style.

-- 
David Carter                             Email: David.Carter at ucs.cam.ac.uk
University Computing Service,            Phone: (01223) 334502
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