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SubjectRe: Warn about taskfile?

Did you bother to turn off the suspend to death? Since it appears to do
all kinds of orthoginal operations to the state machine?

Not hat it matters.

-a

On Thu, 31 Jul 2003, Pavel Machek wrote:

> Hi!
>
> > > > > I had some strange fs corruption, and andi suggested that it probably
> > > > > is TASKFILE-related. Perhaps this is good idea?
> > > >
> > > > Idea is good.
> > > >
> > > > Did corruption go away after disabling taskfile?
> > >
> > > Not sure, it took week for corruption to creep in, and it might have
> > > been loop-related or swsusp-related. I'm not at all sure it was
> > > TASKFILE, but I'm turning it off for now.
> >
> > I doubt it was taskfile, your /dev/hda is using UDMA so taskfile's impact
> > is minimal. I've checked this codepath once again today and can't
> > see anything which has (possibly) caused Andi's problems.
> >
> > I think if it is taskfile related it might be caused by some timing issues
> > (races) and should be visible (less frequently) with non-taskfile code too
> > and this is not happening.
> >
> > If you are not sure if it was taskfile why do you want to warn about it?
> > [ Because Andi is spreading FUD about taskfile? ;-) ]
>
> This was i386 machine, but I'm not sure if I told that to Andi.
>
> > > At least it is strange to have option that says both "experimental"
> > > and "it is safe to say Y". What are those "most cases"?
> >
> > Using (U)DMA should be 100% safe, using single-sector PIO should
> > also be safe, using multi-sector PIO might be less safe...
>
> Perhaps this is good idea?
> Pavel
>
> --- clean/drivers/ide/Kconfig 2003-07-27 22:31:13.000000000 +0200
> +++ linux/drivers/ide/Kconfig 2003-07-31 12:24:16.000000000 +0200
> @@ -283,7 +283,8 @@
> ---help---
> Use new taskfile IO code.
>
> - It is safe to say Y to this question, in most cases.
> + It is safe to say Y to this question if you are using (U)DMA or
> + single-sector PIO. Be carefull wilh multi-sector PIO.
>
> comment "IDE chipset support/bugfixes"
> depends on BLK_DEV_IDE
>
>
> --
> When do you have a heart between your knees?
> [Johanka's followup: and *two* hearts?]
> -
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