DragonFly-2.3.1.806.gb2072 master sys/kern sys_pipe.c
commit b20720b5191015783c5d4c26383307807e9c4862
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Sun Jul 12 18:37:46 2009 -0700
pipe - Fix piperd/pipewr deadlock in mpsafe case
* Fix a bug where piperd and pipewr could be entered simultaniously
by the reader and writer and neither gets woken up.
* Redo the hysteresis slightly to reduce IPIs even more.
Summary of changes:
sys/kern/sys_pipe.c | 66 ++++++++++++++++++++++++++++++++------------------
1 files changed, 42 insertions(+), 24 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/b20720b5191015783c5d4c26383307807e9c4862
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