Re: cvs commit: src/sys/fs/tmpfs tmpfs.h tmpfs_subr.c

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From
Dmitry Morozovsky <marck@rinet.ru>
Date
3 Aug 2007 07:33:56
Subject
Re: cvs commit: src/sys/fs/tmpfs tmpfs.h tmpfs_subr.c
Message-ID
20070803113300.W80820@woozle.rinet.ru


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Dear Xin,

On Fri, 3 Aug 2007, LI Xin wrote:

LX> > Log:
LX> > MFp4 - Refine locking to eliminate some potential race/panics:
LX> >
LX> > - Copy before testing a pointer. This closes a race window.
LX> > - Use msleep with the node interlock instead of tsleep.
LX> > - Do proper locking around access to tn_vpstate.
LX> > - Assert vnode VOP lock for dir_{atta,de}tach to capture
LX> > inconsistent locking.
LX> >
LX> > Suggested by: kib
LX> > Submitted by: delphij
LX> > Reviewed by: Howard Su
LX> > Approved by: re (tmpfs blanket)
LX>
LX> Should have mentioned that this is done in response of pho@'s stress
LX> test. Thanks goes to him for all these hard work!

Should it fix panics I reported to you during last couple of days?

Sincerely,
D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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