Re: [PATCH] ext4: add fallocate mode blocking for debugging purposes

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On Wed, Apr 16, 2014 at 09:25:56AM +1000, Dave Chinner wrote:
> Actually, we shouldn't be changing xfstests or adding workarounds in
> the kernel to avoid certain operations. We should be fixing the damn
> bugs that are being exposed.

Well, I'm waiting for Namjae to look into the test failures.
Unfortunately I don't have time right now to fix it myself.

In the meantime, I wanted to do a full baseline test run to make sure
we didn't have any other regressions or failures post -rc1, and so
being able to filter out collapse range allowed me to kick off a test
of the rest of the patches I was hoping to push to Linus for -rc2.

> i.e. that we have to add the FALLOC_FL_INSERT_RANGE to fsx and
> fsstress as well as having corner case tests and it needs to pass
> those tests before XFS support is ready for upstream inclusion. At
> least, that's the lesson I learnt from as the xfstests and XFS
> Maintainer - we didn't put the QA bar for inclusion high enough, and
> so problems slipped through.
> 
> If you want to add more strict testing requirements for ext4
> inclusion, then you're welcome to request them for the ext4
> implementation of that functionality. You don't have to accept the
> code until you're happy with it....

No arguments here; I plan to do the same.

Regards,

						- Ted
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