RE: ext4 out of order when use cfq scheduler

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> 
> OK, I have something - Huang, can you check whether the attached patches also
> fix your data exposure issues please? The first patch is the original fix, patch two
> is a cleanup, patches 3 and 4 implement the speedup suggested by Ted. Patches
> are only lightly tested so far.  I'll run more comprehensive tests later and in
> particular I want to check whether the additional complexity actually brings us
> some advantage at least for workloads which redirty pages in addition to writing
> some new ones using delayed allocation.
> 
> 								Honza
> --
> Jan Kara <jack@xxxxxxxx>
> SUSE Labs, CR


Sure, I will try to merge the patches and do the test on my kernel.

Huang weller
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