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SubjectRe: [PATCH 1/5] Forking ext4 filesystem from ext3 filesystem
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 :(

Thanks,
Badari

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