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purpose of the skb head pool

To: davem@xxxxxxxxxx
Subject: purpose of the skb head pool
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 29 Apr 2003 13:55:06 +0200
Cc: netdev@xxxxxxxxxxx
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mutt/1.2.5i
[sorry, wrong Cc: the first time]

net/core/skbuf.c has a small per-cpu pool to keep some hot skbufs around
instead of returning them to the system allocator.  But if you loook
at the slab allocator we'll have exactly that same code duplicated in
there (see functions ac_data, __cache_alloc and kmem_cache_alloc in
slab.c).  So is there some other reason why this pool is needed?


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