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Trond Myklebust 23918b0306 SUNRPC: Fix a performance regression in the RPC authentication code 
Fix a regression reported by Max Kellermann whereby kernel profiling
showed that his clients were spending 45% of their time in
rpcauth_lookup_credcache.

It turns out that although his processes had identical uid/gid/groups,
generic_match() was failing to detect this, because the task->group_info
pointers were not shared. This again lead to the creation of a huge number
of identical credentials at the RPC layer.

The regression is fixed by comparing the contents of task->group_info
if the actual pointers are not identical.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-20 13:17:40 -08:00
..
9p 9p: restrict RDMA usage 2008-11-12 23:33:57 -08:00
802 net/802/fc.c: Fix compilation warnings 2008-10-15 00:13:53 -07:00
8021q vlan: Fix typos in proc output string 2008-11-10 13:37:40 -08:00
appletalk net: Rationalise email address: Network Specific Parts 2008-10-13 19:01:08 -07:00
atm net/atm/lec.c: drop code after return 2008-09-22 19:24:45 -07:00
ax25 ax25: Quick fix for making sure unaccepted sockets get destroyed. 2008-10-06 12:53:50 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-10-17 08:58:52 -07:00
bridge net: Fix disjunct computation of netdev features 2008-10-23 01:11:29 -07:00
can net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely) 2008-10-16 15:24:51 -07:00
core pktgen: fix multiple queue warning 2008-11-19 14:09:47 -08:00
dccp dccp: Port redirection support for DCCP 2008-10-19 23:36:47 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-10-17 08:58:52 -07:00
dsa dsa: fix master interface allmulti/promisc handling 2008-11-10 21:53:12 -08:00
econet netns: Use net_eq() to compare net-namespaces for optimization. 2008-07-19 22:34:43 -07:00
ethernet dsa: add support for Trailer tagging format 2008-10-08 17:24:16 -07:00
ieee80211 net/ieee80211: adjust error handling 2008-08-22 16:29:49 -04:00
ipv4 TPROXY: supply a struct flowi->flags argument in inet_sk_rebuild_header() 2008-11-20 01:08:06 -08:00
ipv6 net: fix tiny output corruption of /proc/net/snmp6 2008-11-20 04:20:10 -08:00
ipx netns: Use net_eq() to compare net-namespaces for optimization. 2008-07-19 22:34:43 -07:00
irda Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-07-20 17:43:29 -07:00
iucv iucv: Fix mismerge again. 2008-09-30 03:03:35 -07:00
key af_key: mark policy as dead before destroying 2008-11-06 23:08:37 -08:00
lapb
llc netns: Use net_eq() to compare net-namespaces for optimization. 2008-07-19 22:34:43 -07:00
mac80211 mac80211: remove ieee80211_notify_mac 2008-11-18 17:26:26 -05:00
netfilter netfilter: payload_len is be16, add size of struct rather than size of pointer 2008-11-10 16:46:06 -08:00
netlabel netlabel: Fix compilation warnings in net/netlabel/netlabel_addrlist.c 2008-10-30 10:44:48 -04:00
netlink net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely) 2008-10-16 15:24:51 -07:00
netrom netrom: Fix sock_orphan() use in nr_release 2008-10-06 12:54:57 -07:00
packet net: convert BUG_TRAP to generic WARN_ON 2008-07-25 21:43:18 -07:00
phonet phonet: fix compilation with gcc-3.4 2008-11-19 14:17:41 -08:00
rfkill Fix logic error in rfkill_check_duplicity 2008-11-06 16:37:09 -05:00
rose netdev: Handle ->addr_list_lock just like ->_xmit_lock for lockdep. 2008-07-22 14:16:42 -07:00
rxrpc net/rxrpc: Use an IS_ERR test rather than a NULL test 2008-08-13 02:40:48 -07:00
sched pkt_sched: fix missing check for packet overrun in qdisc_dump_stab() 2008-11-20 04:07:14 -08:00
sctp sctp: Fix to handle SHUTDOWN in SHUTDOWN_RECEIVED state 2008-10-23 01:01:18 -07:00
sunrpc SUNRPC: Fix a performance regression in the RPC authentication code 2008-11-20 13:17:40 -08:00
tipc tipc: Don't use structure names which easily globally conflict. 2008-09-02 23:38:32 -07:00
unix net: unix: fix inflight counting bug in garbage collector 2008-11-09 11:17:33 -08:00
wanrouter wanmain.c doesn't need syncppp.h 2008-07-23 23:00:36 +02:00
wireless wireless: fix regression caused by regulatory config option 2008-10-26 10:38:52 -07:00
x25 netns: Use net_eq() to compare net-namespaces for optimization. 2008-07-19 22:34:43 -07:00
xfrm xfrm: Fix xfrm_policy_gc_lock handling. 2008-11-03 19:11:29 -08:00
compat.c reintroduce accept4 2008-11-19 18:49:57 -08:00
Kconfig net: Distributed Switch Architecture protocol support 2008-10-08 17:15:19 -07:00
Makefile net: Distributed Switch Architecture protocol support 2008-10-08 17:15:19 -07:00
nonet.c
socket.c reintroduce accept4 2008-11-19 18:49:57 -08:00
sysctl_net.c missing bits of net-namespace / sysctl 2008-07-27 09:45:34 -07:00
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