Re: The meaning of data=ordered as it relates to delayed allocation

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On Mon, Jan 19, 2009 at 10:13:45AM +0530, Aneesh Kumar K.V wrote:
> > So I wonder if we should either:
> > 
> > (a) make data=ordered force block allocation and writeback --- which
> >     should just be a matter of disabling the
> >     redirty_page_for_writepage() code path in ext4_da_writepage()
> 
> We can't do that because we cannot do block allocation there. So we need
> to redirty the page that have unmapped buffer_heads.

What is preventing us from doing block allocation from
ext4_da_writepage()?

						- Ted
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