Re: LogFS take four

[Jörn Engel <joern@lazybastard.org>]

On Mon, 4 June 2007 00:18:21 +0200, Arnd Bergmann wrote:
> On Sunday 03 June 2007, Jörn Engel wrote:
> 
> > Unchanged:
> > o error handling
> > 
> ...
> > Won't happen (unless I get convinced to do otherwise):
> > o Change LOGFS_BUG() and LOGFS_BUG_ON() to inline functions
> >   These are macros for very much the same reasons BUG() and BUG_ON() are.
> 
> I wonder how many of your LOGFS_BUG{,_ON} still remain after the
> error handling is in place to deal with broken file system contents.
> Ideally, I'd say the current LOGFS_BUG() should be replaced with
> a function that prints about the kind of error it has hit (rate-limited),
> potentially calls logfs_crash_dump(), and remounts the medium read-only,
> but _not_ call BUG().

That sounds fairly useful, actually.  Do a WARN_ON(), call
logfs_crash_dump(), remount read-only and finished.  Rate-limiting might
be unnecessary as the read-only thing already limits the rate to 1.

I like the idea.

Jörn

-- 
Fools ignore complexity.  Pragmatists suffer it.
Some can avoid it.  Geniuses remove it.
-- Perlis's Programming Proverb #58, SIGPLAN Notices, Sept.  1982
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