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OpenCloudOS-Kernel
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Eric Dumazet 761965eab3 tcp: tcp_sendmsg() page recycling 
If our TCP_PAGE(sk) is not shared (page_count() == 1), we can set page
offset to 0.

This permits better filling of the pages on small to medium tcp writes.

"tbench 16" results on my dev server (2x4x2 machine) :

Before : 3072 MB/s
After  : 3146 MB/s  (2.4 % gain)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2011-12-04 13:20:40 -05:00
..
9p net/9p: Convert net/9p protocol dumps to tracepoints 2011-10-24 11:13:12 -05:00
802 net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
8021q vlan: Move vlan_set_encap_proto() to vlan header file 2011-12-03 09:35:09 -08:00
appletalk net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
atm atm: clip: Remove code commented out since eternity. 2011-12-02 14:27:11 -05:00
ax25 NET: AX.25: Check ioctl arguments to avoid overflows further down the road. 2011-11-29 00:23:12 -05:00
batman-adv batman-adv: Fix range check for expected packets 2011-11-20 13:08:35 +01:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux 2011-11-22 14:05:46 -05:00
bridge ipv6: Add fragment reporting to ipv6_skip_exthdr(). 2011-12-03 09:35:10 -08:00
caif caif: Remove unused enum and parameter in cfserl 2011-11-30 23:30:48 -05:00
can can: remove references to berlios mailinglist 2011-10-17 19:22:46 -04:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2011-11-21 12:11:13 -08:00
core tcp: take care of misalignments 2011-12-04 13:20:39 -05:00
dcb net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
dccp dccp: Fix compile warning in probe code. 2011-12-01 14:45:49 -05:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
dns_resolver KEYS: Improve /proc/keys 2011-03-17 11:59:32 +11:00
dsa dsa: Move switch drivers to new directory drivers/net/dsa 2011-11-29 00:21:36 -05:00
econet net: Remove all uses of LL_ALLOCATED_SPACE 2011-11-18 14:37:09 -05:00
ethernet net: don't clear IFF_XMIT_DST_RELEASE in ether_setup 2011-09-15 14:49:44 -04:00
ieee802154 net: Remove all uses of LL_ALLOCATED_SPACE 2011-11-18 14:37:09 -05:00
ipv4 tcp: tcp_sendmsg() page recycling 2011-12-04 13:20:40 -05:00
ipv6 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch 2011-12-03 22:53:31 -05:00
ipx net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
irda irttp: Use kmemdup rather than duplicating its implementation 2011-11-21 15:02:17 -05:00
iucv net: more accurate skb truesize 2011-10-13 16:05:07 -04:00
key net: remove ipv6_addr_copy() 2011-11-22 16:43:32 -05:00
l2tp l2tp: ensure sk->dst is still valid 2011-11-26 15:57:36 -05:00
lapb wan: make LAPB callbacks const 2011-09-16 19:20:20 -04:00
llc net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
netfilter ipv6: Add fragment reporting to ipv6_skip_exthdr(). 2011-12-03 09:35:10 -08:00
netlabel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
netlink genetlink: Add lockdep_genl_is_held(). 2011-12-03 09:35:07 -08:00
netrom NET: NETROM: Fix formatting. 2011-11-29 00:23:13 -05:00
nfc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux 2011-11-22 14:05:46 -05:00
openvswitch net: Add Open vSwitch kernel components. 2011-12-03 09:35:17 -08:00
packet packet: Add needed_tailroom to packet_sendmsg_spkt 2011-11-18 14:37:10 -05:00
phonet Phonet: set the pipe handle using setsockopt 2011-11-18 14:37:40 -05:00
rds rds: drop "select LLIST" 2011-11-14 00:10:50 -05:00
rfkill Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux 2011-11-22 14:05:46 -05:00
rose net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
rxrpc RxRPC: Use kmemdup rather than duplicating its implementation 2011-11-21 15:02:36 -05:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
tipc net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
unix AF_UNIX: Fix poll blocking problem when reading from a stream socket 2011-11-26 16:34:22 -05:00
wanrouter wanrouter: Remove kernel_lock annotations 2011-11-07 13:27:30 -05:00
wimax net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-12-02 13:49:21 -05:00
x25 Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
Kconfig net: Add Open vSwitch kernel components. 2011-12-03 09:35:17 -08:00
Makefile net: Add Open vSwitch kernel components. 2011-12-03 09:35:17 -08:00
compat.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
nonet.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
socket.c net: add network priority cgroup infrastructure (v4) 2011-11-22 15:22:23 -05:00
sysctl_net.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00