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remarkable-linux/net
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Eric Dumazet 87151b8689 net: allow pskb_expand_head() to get maximum tailroom 
Marc Merlin reported many order-1 allocations failures in TX path on its
wireless setup, that dont make any sense with MTU=1500 network, and non
SG capable hardware.

Turns out part of the problem comes from pskb_expand_head() not using
ksize() to get exact head size given by kmalloc(). Doing the same thing
than __alloc_skb() allows more tailroom in skb and can prevent future
reallocations.

As a bonus, struct skb_shared_info becomes cache line aligned.

Reported-by: Marc MERLIN <marc@merlins.org>
Tested-by: Marc MERLIN <marc@merlins.org>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11 10:10:43 -04:00
..
9p net/9p: handle flushed Tclunk/Tremove 2012-02-26 14:49:57 -06:00
802 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
8021q
appletalk
atm Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ax25 Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
batman-adv Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge 2012-03-11 15:36:34 -07:00
bluetooth Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 18:12:23 -07:00
bridge bridge: Do not send queries on multicast group leaves 2012-04-11 09:43:13 -04:00
caif caif: make zero a legal caif connetion id. 2012-03-11 15:38:16 -07:00
can
ceph libceph: isolate kmap() call in write_partial_msg_pages() 2012-03-22 10:47:52 -05:00
core net: allow pskb_expand_head() to get maximum tailroom 2012-04-11 10:10:43 -04:00
dcb
dccp dccp: fix bug in sequence number validation during connection setup 2012-03-03 09:02:52 -07:00
decnet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
dns_resolver
dsa
econet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ethernet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ieee802154 net/ieee802154/6lowpan.c: reuse eth_mac_addr() 2012-02-22 14:46:37 -05:00
ipv4 tcp: fix tcp_rcv_rtt_update() use of an unscaled RTT sample 2012-04-10 14:47:09 -04:00
ipv6 netfilter: ip6_tables: ip6t_ext_hdr is now static inline 2012-04-09 16:29:34 +02:00
ipx
irda Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
iucv Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-03-22 18:15:32 -07:00
key
l2tp l2tp: enable automatic module loading for l2tp_ppp 2012-03-21 22:14:56 -04:00
lapb Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
llc
mac80211 Merge branch 'akpm' (Andrew's patch-bomb) 2012-04-05 15:30:34 -07:00
netfilter netfilter: nf_conntrack: fix incorrect logic in nf_conntrack_init_net 2012-04-10 13:00:38 +02:00
netlabel netlabel: use GFP flags from caller instead of GFP_ATOMIC 2012-03-22 19:29:57 -04:00
netlink netlink: fix races after skb queueing 2012-04-06 04:21:06 -04:00
netrom Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
nfc NFC: NCI code identation fixes 2012-03-06 15:16:25 -05:00
openvswitch Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
packet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
phonet phonet: Check input from user before allocating 2012-04-05 19:05:56 -04:00
rds RDS: use gfp flags from caller in conn_alloc() 2012-03-22 19:29:58 -04:00
rfkill device.h: cleanup users outside of linux/include (C files) 2012-03-11 14:27:37 -04:00
rose Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
rxrpc RxRPC: Fix kcalloc parameters swapped 2012-02-14 14:41:55 -05:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-03-20 21:04:47 -07:00
sctp sctp: Allow struct sctp_event_subscribe to grow without breaking binaries 2012-04-04 18:05:02 -04:00
sunrpc Merge branch 'for-3.4' of git://linux-nfs.org/~bfields/linux 2012-03-29 14:53:25 -07:00
tipc tipc: Optimize setting of immutable payload message header fields 2012-02-29 11:45:35 -05:00
unix poll: add poll_requested_events() and poll_does_not_wait() functions 2012-03-23 16:58:38 -07:00
wanrouter
wimax
wireless Merge branch 'akpm' (Andrew's patch-bomb) 2012-04-05 15:30:34 -07:00
x25
xfrm xfrm: Access the replay notify functions via the registered callbacks 2012-03-22 19:29:58 -04:00
compat.c Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 18:12:23 -07:00
Kconfig
Makefile
nonet.c
socket.c tcp: tcp_sendpages() should call tcp_push() once 2012-04-05 19:04:27 -04:00
sysctl_net.c