Re: Ok, explained.. (was Re: [PATCH] mm: fix page_mkclean_one)

From: Andrew Morton
Date: Fri Dec 29 2006 - 19:41:57 EST

On Fri, 29 Dec 2006 16:11:44 -0800 (PST)
Linus Torvalds <torvalds@xxxxxxxx> wrote:

> > JBD implements physical block-based journalling, so it is 100% appropriate
> > that JBD deal with these disk blocks using their buffer_head
> > representation.
> And as long as it does that, you just have to face the fact that it's
> going to perform like crap, including what you call "extra" writes, and
> what I call "deal with it".

It is quite tiresome to delete things which your interlocutor said and to
then restate them as if it were some sort of relevation.

> > Somewhat nastily, but as ext3 directories are metadata it is appropriate
> > that modifications to them be done in terms of buffer_heads (ie: blocks).
> No. There is nothing "appropriate" about using buffer_heads for metadata.

I said "modification".

> [stuff about directory reads elided]

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