From: "Justin T. Gibbs" <gibbs@scsiguy.com>
Date: Wed, 22 Aug 2001 15:40:30 -0600
I've started looking through the network devices for bloat caused
by the change in size of this type and I haven't found it anywhere.
Consider network drivers (most PCI ones) that keep track of:
struct sk_buff *skb;
dma_addr_t mapping;
pairs for each transmit packet. With your suggested change,
their structures will increase 32-bits in size for each entry
when CONFIG_HIGHMEM on x86 or on a 64-bit platform.
I mean, just grep for dma_addr_t in structures of these networking
drivers to see where the wasted space would be.
Later,
David S. Miller
davem@redhat.com
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This archive was generated by hypermail 2b29 : Thu Aug 23 2001 - 21:00:52 EST