> Well, given that bi_end_io() is called after the "io" has completed, I'm
> assuming that networking has completely finished with the memory by the
> time bi_end_io() gets called.
>
> I guess one can envisage situations where that might not happen, but they'd
> be terribly buggy ones, surely.
Th
On Thu, Mar 01, 2007 at 09:09:42PM -0800, Andrew Morton wrote:
> > or document that drivers need to handle it specially and give them a
> > way to find out about them. (Or do the horrible slab refcounting hack
> > I wrote up above)
>
> OK. So you're proposing that XFS and ext3 simply stop sing sl
On Fri, 2 Mar 2007 05:03:51 + Christoph Hellwig <[EMAIL PROTECTED]> wrote:
> On Thu, Mar 01, 2007 at 09:00:44PM -0800, Andrew Morton wrote:
> > I that case we're talking about different things.
> >
> > I thought the proposal was to continue to use slab pages, but to take a ref
> > on them as
On Thu, Mar 01, 2007 at 09:00:44PM -0800, Andrew Morton wrote:
> I that case we're talking about different things.
>
> I thought the proposal was to continue to use slab pages, but to take a ref
> on them as they're added to the bio, drop that ref in bi_end_io()?
That would give you silent memory
On Fri, 2 Mar 2007 04:49:10 + Christoph Hellwig <[EMAIL PROTECTED]> wrote:
> On Thu, Mar 01, 2007 at 08:48:06PM -0800, Andrew Morton wrote:
> > On Fri, 2 Mar 2007 04:30:39 + Christoph Hellwig <[EMAIL PROTECTED]>
> > wrote:
> >
> > > But in this case we'd really need to enforce this, and
On Thu, Mar 01, 2007 at 08:48:06PM -0800, Andrew Morton wrote:
> On Fri, 2 Mar 2007 04:30:39 + Christoph Hellwig <[EMAIL PROTECTED]> wrote:
>
> > But in this case we'd really need to enforce this, and add a
> > BUG_ON(PageSlab(page)) in bio_add_page to trip everyone submit
> > this kind of pag
On Fri, 2 Mar 2007 04:30:39 + Christoph Hellwig <[EMAIL PROTECTED]> wrote:
> But in this case we'd really need to enforce this, and add a
> BUG_ON(PageSlab(page)) in bio_add_page to trip everyone submit
> this kind of pages.
That would be
BUG_ON(PageSlab(page) && page_count(page) ==
On Thu, Mar 01, 2007 at 07:22:45PM -0800, Andrew Morton wrote:
> Well I spose slab _could_ take a ref on these pages.
What it would need to do is:
- add a reference for every object touching this page
- don't give the page back to the page allocator or reuse any
single object inside it until
On Fri, 2 Mar 2007 02:29:19 + Christoph Hellwig <[EMAIL PROTECTED]> wrote:
> On Thu, Mar 01, 2007 at 05:42:04PM -0800, Andrew Morton wrote:
> > Something funny is going on here.
>
> Not so funny for those who've tried to sort out the issue over
> the past years and just got ignored..
>
> > G
On Thu, Mar 01, 2007 at 05:42:04PM -0800, Andrew Morton wrote:
> Something funny is going on here.
Not so funny for those who've tried to sort out the issue over
the past years and just got ignored..
> Generally, one should increment the refcount of a page when it is put into
> some container. T
On Thu, 1 Mar 2007 18:15:10 -0500
"Ed L. Cashin" <[EMAIL PROTECTED]> wrote:
> This patch works around a problem discussed here and on the XFS
> mailing list in January.
>
> http://lkml.org/lkml/2007/1/19/56
>
> To summarize the issue: If XFS (or any other creator of bios) gives
> the aoe drive
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