Re: [EXT4 set 2][PATCH 5/5] cleanups: Export jbd2-debug via debugfs

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On Wed, 11 Jul 2007 00:38:09 -0500 "Jose R. Santos" <jrs@xxxxxxxxxx> wrote:

> 
> > Alternatively (and preferably) do this via an update to
> > Documentation/filesystems/ext4.txt.
> 
> Seems like I also need to update the doc on Kconfig as well.  Do you
> prefer this in separate patches? (current patch, kconfig patch, ext4
> doc update patch?

All these changes are logically connected (aren't they?).  A single patch
is fine.

> > Shoudln't all this debug info be a per-superblock thing rather than
> > kernel-wide?
> 
> I don't think it is worth pursuing this feature since this seems to
> have been broken for a while now (its been there since the first git
> revission in ext3) and nobody has noticed it until now.  It could be
> address on a later patch though, since the initial purpose of the patch
> was to fix the broken JBD2_DEBUG option. Of course, this may not be
> clearly express in the changelog. :)
> 

I don't think that making it all per-superblock is worth the effort - it's
a developer-only thing and developer will have the knowledge to test ext4
on an otherwise-ext3 setup if they're really fussed about the accuracy.

So yes, a bare make-it-work patch sounds appropriate.  Or remove it, but
hey, it might be useful.  The timestamping stuff certainly looks useful.

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