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Date:      Thu, 14 Dec 2000 16:58:20 +0900
From:      Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp>
To:        bright@wintelcom.net
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, jhb@FreeBSD.org, cp@FreeBSD.org, tanimura@r.dl.itc.u-tokyo.ac.jp
Subject:   Re: cvs commit: src/sys/ufs/ffs ffs_vfsops.c
Message-ID:  <vmzohz77tv.wl@rina.r.dl.itc.u-tokyo.ac.jp>
In-Reply-To: In your message of "Thu, 14 Dec 2000 15:34:20 %2B0900" <vm1yvb8qab.wl@rina.r.dl.itc.u-tokyo.ac.jp>
References:  <200012131003.eBDA3rh34394@freefall.freebsd.org> <20001213024954.B16205@fw.wintelcom.net> <vm4s088s2l.wl@rina.r.dl.itc.u-tokyo.ac.jp> <vm1yvb8qab.wl@rina.r.dl.itc.u-tokyo.ac.jp>

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On Thu, 14 Dec 2000 15:34:20 +0900,
  Seigo Tanimura <tanimura> said:


Seigo> Thus it should be even better to enter to and exit from the ufs hash
Seigo> mutex in the functions shown above.

And the result was no go. The problems were

o sleeping with holding a lock (for mutex), and
o recursion of lock (for simplelock).

lockmgr is likely to solve both of the problems, but I am not sure if
it is worth trying.

-- 
Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp> <tanimura@FreeBSD.org>


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