Re: [PATCH] block: respect virtual boundary mask in bvecs

[Sagi Grimberg]

> blktrace won't help on this issue because .bv_offset isn't recorded.
>
> This patch makes sense on >4KB PAGE_SIZE. If your issue happens on
> ARCH with 4K PAGE_SIZE, maybe you should root cause why it makes a
> difference on iSer. And it is highly possible there is bug somewhere.

I don't suspect that this is the case. unless all the vec elements
happen to have an offset but if that is the case I don't think that
this patch would've solved this.

It can't really be an iser issue because iser does not control bio
splitting/merging... it can only ask the block layer to obay the
virt_boundary.