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

From: Jeff Garzik
Date: Thu Aug 10 2006 - 16:22:09 EST

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..

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 :)


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