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SubjectRe: [PATCH 1/5] Forking ext4 filesystem from ext3 filesystem
Badari Pulavarty wrote:
> Andrew Morton wrote:
>> Also, JBD is presently feeding into submit_bh() buffer_heads which
>> span two
>> machine pages, and some device drivers spit the dummy. It'd be better to
>> fix that once, rather than twice..
> Andrew,
>
> I looked at this few days ago. I am not sure how we end up having
> multiple pages (especially,
> why we end up having buffers with bh_size > pagesize) ? Do you know why ?
>
> Easiest fix would be to fix submit_bh() to deal with multiple vecs -
> which is vetoed by
> Jens and I agree with him :(

Yep. The sooner we kill buffer heads and use submit_bio(), the better :)

Jeff



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