Messages in this thread | | | Date | Wed, 22 Aug 2001 16:09:44 -0700 (PDT) | Subject | Re: With Daniel Phillips Patch | From | "David S. Miller" <> |
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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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