Re: [RFC][PATCH] ext3: don't read inode block if the buffer has a write error

[Linus Torvalds <torvalds@linux-foundation.org>]

On Tue, 24 Jun 2008, Nick Piggin wrote:
> 
> What you want to do is not insane, but the way it is currently being
> done is. As I said, just clearing the uptodate bit might blow up your
> kernel pretty quickly from assertions in the vm. It should be going
> through the whole truncate or invalidate page machinery in order to
> do that.

Fair enough.

I would not mind, for example, leaving the uptodate bit, but removing it 
from the radix tree or something like that (ie turning it into an 
anonymous page for a page-cache page, just removing it from the 
hash-queues for a buffer_head).

Of course, that could cause other problems (eg any VM assertions that 
shared mappings only contain non-anon pages).

		Linus