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Date:      Sun, 5 Mar 1995 10:20:56 -0800 (PST)
From:      Poul-Henning Kamp <phk@ref.tfs.com>
To:        davidg@Root.COM
Cc:        jhay@mikom.csir.co.za, current@FreeBSD.org
Subject:   Re: "Text file busy" with program not running anymore?
Message-ID:  <199503051820.KAA18600@ref.tfs.com>
In-Reply-To: <199503051523.HAA00249@corbin.Root.COM> from "David Greenman" at Mar 5, 95 07:23:16 am

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> >I am running FreeBSD-current with a kernel of this morning, if this is 
> >relevant. I have compiled a program, copied it with cp to another directory
> >and executed it from there. Then I changed the source, compiled it again and
> >when I tried to copy it, I got the "cp: /users/jhay/bin/u2d: Text file busy"
> >message. But the program is not running anymore. I have waited a few minutes,
> >thinking that there is some cache that have to timeout, but it did not help.
> >
> >Now it isn't the end of the world for me, I can just delete the file before
> >I copy the new one or use install. 
> >
> >I would just like to know if this is expected behaviour or not?
> 
>    It is expected. Whenever a file is executed, the VTEXT flag is set on the
> vnode to indicate that someone is executing it. The flag remains set until
> there are no references to it and it is no longer cached. In your case, it
> lingered in the cache. It never 'times out' - the cached vnodes are replaced
> with other cached vnodes - so it will only get out of the cache if there is
> activity on the system to flush it out.
>    It's conceivable that there could be a count instead of a flag...but this
> complicates things quite a bit and I don't see the point in it. Just rm the
> file first.
Wouldn't the right thing be to flush it if it is opened for write ?
-- 
Poul-Henning Kamp <phk@login.dknet.dk>
TRW Financial Systems, Inc.
I am Pentium Of Borg. Division is Futile. You WILL be approximated.



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