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Re: kern/28448 (stackable filesystems locking breakage when looking up DOTDOT)
The following reply was made to PR kern/28448; it has been noted by GNATS.
From: David Holland <dholland-bugs%netbsd.org@localhost>
To: YAMAMOTO Takashi <yamt%mwd.biglobe.ne.jp@localhost>
Cc: dholland-bugs%netbsd.org@localhost, gnats-bugs%NetBSD.org@localhost,
Subject: Re: kern/28448 (stackable filesystems locking breakage when
looking up DOTDOT)
Date: Sun, 4 Jan 2009 01:18:26 +0000
On Sat, Jan 03, 2009 at 02:32:13PM +0900, YAMAMOTO Takashi wrote:
> locks can be shared only when the lower vnode exports them
> for the upper layer. ie. a layered filesystem can't assume that
> it can share locks.
That sounds like a problem... I'll keep it in mind.
> > (although note that I'm planning to abolish the dotdot-dance)
> good to hear. thanks for working on it.
> how will you do so?
(Which are turning out to be much longer-range plans than I'd
intended... but that's another story.)
David A. Holland
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