[lkml]   [2002]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Possible bug and question about ide_notify_reboot in 2.4.19
On Sat, 14 Sep 2002, Alex Davis wrote:

> --- Andre Hedrick <> wrote:
> >
> > Hi Alex,
> >
> > We (T13 Standards) only recently required (shall) all non-packet device to
> > support flush cache. No where does it state that a device supporting PM
> > for a standby (shall), the key word here is "shall", issue a flush-cache.
> I am assuming that a hard drive is a non-packet device. Let me make sure I'm

Today, yes ... In the past no.
There are a handfull of these strange beasts which still exists.

> interpreting this correctly: older ( and some current ) drives may flush cache
> on standby/sleep; current and future drives may not. In addition, older drives

It means there are not rules (rules is a loose term) for how to do this in
the standard.

> may not support the flush cache command.

There is supported v/s enabled, and these can be optional.
Optional == (Mandatory Optional) because nobody wants to not have the
feature ready or they will miss the sale.

> > I will not break support for older hardware, on a whim.
> Not my intention.


> > You said you can make a patch, please do so and apply it to your tree.
> > Now, if you want the option, submit the patch for review. For two or
> > three days there has been no patch to test.
> Still testing locally. I also want to fix the code so that the flush is
> done before the standby.

Wait, how did the order go south?

> >
> > To be absolutely honest, I really do not like to give options in the
> > kernel-config build which can cause backwards compatablity problems.
> This wouldn't be a config option. You would have to modify ide.c by
> hand to disable standby.

So a manual config option? That is more reasonable and not doable by


Andre Hedrick
LAD Storage Consulting Group

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:28    [W:0.051 / U:2.332 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site