Re: [dm-devel] do not disable ext4 discards on first discard failure? [was: Re: dm snapshot: ignore discards issued to the snapshot-origin target]

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On 5/4/11 11:33 AM, Ted Ts'o wrote:
> On Fri, Apr 29, 2011 at 09:28:51AM -0500, Eric Sandeen wrote:
>> On 4/29/11 7:29 AM, Christoph Hellwig wrote:
>>> FYI, that disable discard on failure seems to be an ext4 special and no
>>> one else picked up that stupid idea.  If ext4 wants to misbehave for
>>> that just let them..
>>
>> It was my "stupid idea," and I'm ok with reverting it ;)
> 
> I think I forgot to send the patch out, but it's been reverted in the
> ext4 master branch, commit id: d9f34504e695.  It's more than a revert,
> actually, since I also dropped error checking for FITRIM.  Otherwise
> an attempt to use FITRIM would stop after hitting the first dm region
> that didn't support discards.
> 
> 						- Ted

The xfs must-be-posted-and-reviewed-before-commit policy would be helpful here, I think.

If it's understood and agreed upon, people will get more diligent about review, and it'll be easier to remember to send the patch out - because it's policy.

Thanks,
-Eric
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