Eric Dumazet 35f9c09fe9 tcp: tcp_sendpages() should call tcp_push() once ... commit 2f53384424 (tcp: allow splice() to build full TSO packets) added a regression for splice() calls using SPLICE_F_MORE. We need to call tcp_flush() at the end of the last page processed in tcp_sendpages(), or else transmits can be deferred and future sends stall. Add a new internal flag, MSG_SENDPAGE_NOTLAST, acting like MSG_MORE, but with different semantic. For all sendpage() providers, its a transparent change. Only sock_sendpage() and tcp_sendpages() can differentiate the two different flags provided by pipe_to_sendpage() Reported-by: Tom Herbert <therbert@google.com> Cc: Nandita Dukkipati <nanditad@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: H.K. Jerry Chu <hkchu@google.com> Cc: Maciej Żenczykowski <maze@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: Eric Dumazet <eric.dumazet@gmail>com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-04-05 19:04:27 -04:00
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acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-03-30 16:45:39 -07:00
asm-generic	asm-generic: add linux/types.h to cmpxchg.h	2012-04-02 14:41:27 -07:00
crypto	crypto: user - Fix lookup of algorithms with IV generator	2012-03-29 19:52:47 +08:00
drm	Merge branch 'drm-fixes-intel' of git://people.freedesktop.org/~airlied/linux	2012-04-03 10:13:34 -07:00
keys
linux	tcp: tcp_sendpages() should call tcp_push() once	2012-04-05 19:04:27 -04:00
math-emu
media	The following text was taken from the original review request:	2012-03-24 10:41:37 -07:00
misc
mtd
net	Merge branch 'master' of git://1984.lsi.us.es/net	2012-04-03 19:15:48 -04:00
pcmcia
rdma	Merge branches 'cma', 'cxgb3', 'cxgb4', 'ehca', 'iser', 'mad', 'nes', 'qib', 'srp' and 'srpt' into for-next	2012-03-19 09:50:33 -07:00
rxrpc
scsi	SCSI updates on 20120331	2012-03-31 13:31:23 -07:00
sound	The following text was taken from the original review request:	2012-03-24 10:41:37 -07:00
target	target: Use array_zalloc for device_list	2012-03-15 19:15:51 -07:00
trace	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2012-03-30 12:44:29 -07:00
video	Merge branch 'platforms' of git://git.linaro.org/people/rmk/linux-arm	2012-03-27 18:17:02 -07:00
xen	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
Kbuild