tree 60c640a4b103946d706671ccc2d12fc0d23ed544
parent fc766e4c4965915ab52a1d1fa3c7a7b3e7bc07f0
author Eric Dumazet <eric.dumazet@gmail.com> 1288385084 +0000
committer David S. Miller <davem@davemloft.net> 1289253008 -0800

af_unix: use keyed wakeups

Instead of wakeup all sleepers, use wake_up_interruptible_sync_poll() to
wakeup only ones interested into writing the socket.

This patch is a specialization of commit 37e5540b3c9d (epoll keyed
wakeups: make sockets use keyed wakeups).

On a test program provided by Alan Crequy :

Before:
real    0m3.101s
user    0m0.000s
sys     0m6.104s

After:

real	0m0.211s
user	0m0.000s
sys	0m0.208s

Reported-by: Alban Crequy <alban.crequy@collabora.co.uk>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: David S. Miller <davem@davemloft.net>