Re: [PATCH 0/7] Discard requests, v2

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On Wed, 2008-08-13 at 13:19 +0100, Jamie Lokier wrote:
> You're right, as long as it's not aio, there's no way to sensibly
> order it with concurrent writes; I take it back.
> 
> (Aside: You would issue writes to *different* sectors before
> BLKDISCARD, and they must be done in that order.  That is how you
> implement journalling.)

Yes, but you implement flushes or barriers to handle that case _anyway_.
Normal writes can cross each other too, when they're on different pages.

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@xxxxxxxxx                              Intel Corporation



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