Mel Gorman c93bdd0e03 netvm: allow skb allocation to use PFMEMALLOC reserves ... Change the skb allocation API to indicate RX usage and use this to fall back to the PFMEMALLOC reserve when needed. SKBs allocated from the reserve are tagged in skb->pfmemalloc. If an SKB is allocated from the reserve and the socket is later found to be unrelated to page reclaim, the packet is dropped so that the memory remains available for page reclaim. Network protocols are expected to recover from this packet loss. [a.p.zijlstra@chello.nl: Ideas taken from various patches] [davem@davemloft.net: Use static branches, coding style corrections] [sebastian@breakpoint.cc: Avoid unnecessary cast, fix !CONFIG_NET build] Signed-off-by: Mel Gorman <mgorman@suse.de> Acked-by: David S. Miller <davem@davemloft.net> Cc: Neil Brown <neilb@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: Eric B Munson <emunson@mgebm.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: Mel Gorman <mgorman@suse.de> Cc: Christoph Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-07-31 18:42:46 -07:00
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9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bridge
caif
can
ceph
core	netvm: allow skb allocation to use PFMEMALLOC reserves	2012-07-31 18:42:46 -07:00
dcb
dccp
decnet
dns_resolver
dsa
ethernet
ieee802154
ipv4	net: introduce sk_gfp_atomic() to allow addition of GFP flags depending on the individual socket	2012-07-31 18:42:46 -07:00
ipv6	net: introduce sk_gfp_atomic() to allow addition of GFP flags depending on the individual socket	2012-07-31 18:42:46 -07:00
ipx
irda
iucv
key
l2tp
lapb
llc
mac80211	Merge branch 'for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds	2012-07-26 20:26:27 -07:00
mac802154
netfilter
netlabel
netlink
netrom
nfc
openvswitch	Revert "openvswitch: potential NULL deref in sample()"	2012-07-27 13:45:51 -07:00
packet
phonet
rds
rfkill
rose
rxrpc
sched
sctp
sunrpc	NFS client updates for Linux 3.6	2012-07-30 19:16:57 -07:00
tipc
unix
wanrouter
wimax
wireless
x25
xfrm
compat.c
Kconfig
Makefile
nonet.c
socket.c
sysctl_net.c