]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
IPV4: fib_trie use vmalloc for large tnodes
authorStephen Hemminger <shemminger@vyatta.com>
Thu, 10 Apr 2008 09:56:38 +0000 (02:56 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 10 Apr 2008 09:56:38 +0000 (02:56 -0700)
commit15be75cdb5db442d0e33d37b20832b88f3ccd383
tree83fc9261da859ecf3d6dcad29dadc78f481f7d7f
parent5c06f510a25153ff79e8c2dca312b732a367c5bb
IPV4: fib_trie use vmalloc for large tnodes

Use vmalloc rather than alloc_pages to avoid wasting memory.
The problem is that tnode structure has a power of 2 sized array,
plus a header. So the current code wastes almost half the memory
allocated because it always needs the next bigger size to hold
that small header.

This is similar to an earlier patch by Eric, but instead of a list
and lock, I used a workqueue to handle the fact that vfree can't
be done in interrupt context.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/fib_trie.c