On Tue, 3 Sep 2002, Peter T. Breuer wrote:
> "A month of sundays ago Maciej W. Rozycki wrote:"
> > On Tue, 3 Sep 2002, Rik van Riel wrote:
> > > And what if they both allocate the same disk block to another
> > > file, simultaneously ?
> >
> > You need a mutex then. For SCSI devices a reservation is the way to go
> > -- the RESERVE/RELEASE commands are mandatory for direct-access devices,
> > so thy should work universally for disks.
>
> Is there provision in VFS for this operation?
No. Everybody but you seems to agree these things should be
filesystem specific and not in the VFS.
> (i.e. care to point me at an entry point? I just grepped for "reserve"
> and came up with nothing useful).
Good.
cheers,
Rik
-- http://www.linuxsymposium.org/2002/ "You're one of those condescending OLS attendants" "Here's a nickle kid. Go buy yourself a real t-shirt"http://www.surriel.com/ http://distro.conectiva.com/
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