Re: move block #A to block #B on a given device.
Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz)
Fri, 5 Nov 1999 18:01:43 +0100 (CET)
On Fri, 5 Nov 1999, Tigran Aivazian wrote:
> On Fri, 5 Nov 1999, Mikulas Patocka wrote:
> > > > I think doing pure getblk is wrong (someone else can call bread and
> > > > overwrite data in buffer). There should be bh = getblk();
> > > > mark_buffer_uptodate(bh, 1)
> > >
> > > Yes, of course. Also
> >
> > BTW. neither getblk nor mark_buffer_uptodate check for i/o completion.
> > Isn't it race? Many filesystem do it this way.
>
> io? What io? The only io that getblk() generates is if it wakes up bdflush
> to refill the freelist. There is no io on the blk that is specified to
> getblk, I thought.
the user can open the device and read it. see my previous post.
Mikulas Patocka
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