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tcp.7: Note indications for OOB data given by select(2) and poll(2) 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2017-03-29 08:29:48 +02:00
parent d871cf8569
commit 1a2e88acd6
1 changed files with 8 additions and 0 deletions
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@ -220,6 +220,14 @@ flag is set for
or
.BR recvmsg (2).
When out-of-band data is present,
.BR select (2)
indicates the file descriptor as having an exceptional condition and
.I poll (2)
indicates a
.B POLLPRI
event.
Linux 2.4 introduced a number of changes for improved
throughput and scaling, as well as enhanced functionality.
Some of these features include support for zero-copy