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Eric Dumazet 7450aaf61f tcp: suppress too verbose messages in tcp_send_ack() 
If tcp_send_ack() can not allocate skb, we properly handle this
and setup a timer to try later.

Use __GFP_NOWARN to avoid polluting syslog in the case host is
under memory pressure, so that pertinent messages are not lost under
a flood of useless information.

sk_gfp_atomic() can use its gfp_mask argument (all callers currently
were using GFP_ATOMIC before this patch)

We rename sk_gfp_atomic() to sk_gfp_mask() to clearly express this
function now takes into account its second argument (gfp_mask)

Note that when tcp_transmit_skb() is called with clone_it set to false,
we do not attempt memory allocations, so can pass a 0 gfp_mask, which
most compilers can emit faster than a non zero or constant value.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-02 23:44:32 -05:00
..
6lowpan 6lowpan: put mcast compression in an own function 2015-10-21 00:49:25 +02:00
9p IB/cma: Add support for network namespaces 2015-10-28 12:32:48 -04:00
802
8021q vlan: Do not put vlan headers back on bridge and macvlan ports 2015-11-17 14:38:35 -05:00
appletalk
atm net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
ax25
batman-adv batman-adv: turn batadv_neigh_node_get() into local function 2015-08-27 20:15:34 +02:00
bluetooth Bluetooth: Increment management interface revision 2015-11-23 14:13:32 +01:00
bridge switchdev: bridge: Check return code is not EOPNOTSUPP 2015-11-16 14:56:03 -05:00
caif net: caif: convert to using IFF_NO_QUEUE 2015-08-18 11:55:07 -07:00
can can: avoid using timeval for uapi 2015-10-13 17:42:34 +02:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2015-11-13 09:24:40 -08:00
core net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
dcb net/dcb: make dcbnl.c explicitly non-modular 2015-10-09 07:52:27 -07:00
dccp net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
decnet Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-10-17 14:28:03 +02:00
dns_resolver KEYS: Merge the type-specific data with the payload data 2015-10-21 15:18:36 +01:00
dsa net: dsa: include gpio consumer header file 2015-11-24 11:28:06 -05:00
ethernet net: help compiler generate better code in eth_get_headlen 2015-09-28 22:51:15 -07:00
hsr net: hsr: convert to using IFF_NO_QUEUE 2015-08-18 11:55:07 -07:00
ieee802154 net: fix percpu memory leaks 2015-11-02 22:47:14 -05:00
ipv4 tcp: suppress too verbose messages in tcp_send_ack() 2015-12-02 23:44:32 -05:00
ipv6 tcp: suppress too verbose messages in tcp_send_ack() 2015-12-02 23:44:32 -05:00
ipx
irda TTY/Serial driver patches for 4.4-rc1 2015-11-04 21:35:12 -08:00
iucv net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
key af_key: fix two typos 2015-10-23 03:05:19 -07:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-02 07:21:25 -07:00
l3mdev net: Add netif_is_l3_slave 2015-10-07 04:27:43 -07:00
lapb
llc
mac80211 mac80211: document sleep requirements for channel context ops 2015-11-03 11:15:48 +01:00
mac802154 mac802154: Delete an unnecessary check before the function call "kfree_skb" 2015-11-19 17:50:32 +01:00
mpls mpls: reduce memory usage of routes 2015-10-27 19:52:59 -07:00
netfilter ipvs: use skb_to_full_sk() helper 2015-11-15 18:39:48 -05:00
netlabel
netlink mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd 2015-11-06 17:50:42 -08:00
netrom
nfc NFC: nci: non-static functions can not be inline 2015-10-28 06:44:45 +01:00
openvswitch Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-11-07 13:05:44 -08:00
packet packet: Use PAGE_ALIGNED macro 2015-11-17 15:25:44 -05:00
phonet
rds Merge branch 'akpm' (patches from Andrew) 2015-11-07 14:32:45 -08:00
rfkill rfkill: Copy "all" global state to other types 2015-09-04 14:26:56 +02:00
rose
rxrpc net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
sched net_sched: em_meta: use skb_to_full_sk() helper 2015-11-08 20:56:39 -05:00
sctp net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
sunrpc Mainly smaller bugfixes and cleanup. We're still finding some bugs from 2015-11-11 20:11:28 -08:00
switchdev switchdev: respect SKIP_EOPNOTSUPP flag in case there is no recursion 2015-11-03 13:39:21 -05:00
tipc net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
unix unix: use wq_has_sleeper in unix_dgram_recvmsg 2015-12-01 14:57:43 -05:00
vmw_vsock VSOCK: constify vmci_transport_notify_ops structures 2015-11-23 15:49:29 -05:00
wimax
wireless cfg80211: allow AID/listen interval changes for unassociated station 2015-11-03 11:20:29 +01:00
x25
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2015-10-30 20:51:56 +09:00
compat.c
Kconfig net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
Makefile net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
socket.c net: Drop unlikely before IS_ERR(_OR_NULL) 2015-09-29 15:15:40 +02:00
sysctl_net.c net: sysctl: fix a kmemleak warning 2015-10-23 06:22:08 -07:00