svn commit: r203419 - head/sys/kern
David Xu
davidxu at FreeBSD.org
Wed Feb 3 07:21:21 UTC 2010
Author: davidxu
Date: Wed Feb 3 07:21:20 2010
New Revision: 203419
URL: http://svn.freebsd.org/changeset/base/203419
Log:
Fix comments in do_sem_wait().
Modified:
head/sys/kern/kern_umtx.c
Modified: head/sys/kern/kern_umtx.c
==============================================================================
--- head/sys/kern/kern_umtx.c Wed Feb 3 06:55:13 2010 (r203418)
+++ head/sys/kern/kern_umtx.c Wed Feb 3 07:21:20 2010 (r203419)
@@ -2864,8 +2864,7 @@ do_sem_wait(struct thread *td, struct _u
}
/*
- * The magic thing is we should set c_has_waiters to 1 before
- * releasing user mutex.
+ * set waiters byte and sleep.
*/
suword32(__DEVOLATILE(uint32_t *, &sem->_has_waiters), 1);
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