Re: 2.4.x libata resync

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On Sat, Sep 16, 2006 at 12:07:16PM -0400, Jeff Garzik wrote:
> Willy Tarreau wrote:
> >On Sat, Sep 16, 2006 at 11:49:06AM -0400, Jeff Garzik wrote:
> >>Willy Tarreau wrote:
> >>>There are a bunch of small patches in the early 2.6 version which look
> >>>like bugfixes, but with non-descriptive comments, so I'm not sure what
> >>>they fix. Several of them would apply to 2.4, but I don't want to touch
> >>>this area as long as nobody complains about problems.
> >>Oh there are tons of SATA bug fixes that 2.4.x is missing.  One of the 
> >>biggest is the completely crappy exception handling.  If a SATA device 
> >>is unplugged or spazzes out, the system may or may not recover.
> >
> >Already encountered on sata_nv in a sun x2100 :-)
> >
> >Jeff, I did not want to blindly merge patches from 2.6 to 2.4, but if
> >you point me to a few ones you consider important, I'm willing to merge
> >them.
> 
> As was hinted, it's not that easy, otherwise someone would have done it 
> by now.  libata bug fixes require infrastructure that isn't present on 
> 2.4.  The overall codebase is just too different to easily pull out 
> select bug fixes.

Of course for those. I was thinking about those which just change one
register or things like this that I cannot identify the expected effect.
If you agree, I'll enumerate the ones I've already noticed so that you
just have to say yes/no/unknown on them. Don't worry, I don't want to
spend lots of hours on this, since as I said, I do not receive any
feedback from SATA users on 2.4 (neither positive nor negative).

Willy

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