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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/core/net-sysfs.c
parentb397f99921827e114d7f5600447e172a99c50165 (diff)
downloadlinux-74d332c13b2148ae934ea94dac1745ae92efe8e5.tar.bz2
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>
Diffstat (limited to 'net/core/net-sysfs.c')
-rw-r--r--net/core/net-sysfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index d954b56b4e47..d03f2c9750fa 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1263,7 +1263,7 @@ static void netdev_release(struct device *d)
BUG_ON(dev->reg_state != NETREG_RELEASED);
kfree(dev->ifalias);
- kfree((char *)dev - dev->padded);
+ netdev_freemem(dev);
}
static const void *net_namespace(struct device *d)