Date: Thu, 27 Sep 2007 18:39:19 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern subr_turnstile.c Message-ID: <200709271839.l8RIdJ7f050638@repoman.freebsd.org>
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jhb 2007-09-27 18:39:18 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_6)
sys/kern subr_turnstile.c
Log:
- Remove some debugging nits in the MFC of rwlocks that looked for cases
where a reader blocked on a lock with no owner and just assert that it
never happens like HEAD.
- Actually set td->td_tsqueue to the sub-queue of a turnstile that a
thread is actually enqueued to. Otherwise, the kernel would always
think that threads were on the queue for exclusive (write) waiters
(queue 0). Thus, if the priority of a thread waiting on a read lock
was adjusted while it was waiting it could result in corrupting the
queue of waiting threads.
Revision Changes Path
1.152.2.9 +14 -17 src/sys/kern/subr_turnstile.c
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