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authorEric Dumazet <edumazet@google.com>2013-10-30 13:10:44 -0700
committerDavid S. Miller <davem@davemloft.net>2013-11-03 23:19:00 -0500
commit74d332c13b2148ae934ea94dac1745ae92efe8e5 (patch)
tree4f8f287774deaba28fa4c85d085d587ae7515aaf /net/Makefile
parentb397f99921827e114d7f5600447e172a99c50165 (diff)
downloadlinux-stericsson-74d332c13b2148ae934ea94dac1745ae92efe8e5.tar.gz
net: extend net_device allocation to vmalloc()
Joby Poriyath provided a xen-netback patch to reduce the size of xenvif structure as some netdev allocation could fail under memory pressure/fragmentation. This patch is handling the problem at the core level, allowing any netdev structures to use vmalloc() if kmalloc() failed. As vmalloc() adds overhead on a critical network path, add __GFP_REPEAT to kzalloc() flags to do this fallback only when really needed. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Joby Poriyath <joby.poriyath@citrix.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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