On Fri, Sep 14, 2012 at 10:50:59PM +0100, Alasdair G Kergon wrote:
> On Thu, Sep 06, 2012 at 03:35:02PM -0700, Kent Overstreet wrote:
> > Previously, there was bio_clone() but it only allocated from the fs bio
> > set; as a result various users were open coding it and using
> > __bio_clone().
> 
> Explain in the header the reasoning behind the change to dm-crypt so that 
> it no longer resets bi_idx to 0 too?
> 
> > -   clone->bi_idx = 0;

Previously, it was open coding __bio_clone(), that's what the setting
bi_idx to 0 was from. With the change to bio_clone_bioset() that's no
longer necessary (and dangerous, since bi_idx needs to be consistent
with bi_sector/bi_size).
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