Re: xdr nfs highmem deadlock fix [Re: filesystem access slowing system to a crawl]
Jeff Garzik (email@example.com)
Thu, 20 Feb 2003 18:04:30 -0500
On Thu, Feb 20, 2003 at 11:56:14PM +0100, Trond Myklebust wrote:
> >>>>> " " == Andrea Arcangeli <firstname.lastname@example.org> writes:
> > 2.5.62 has the very same deadlock condition in xdr triggered by
> > nfs too.
> > Andrew, if you're forward porting it yourself like with the
> > filebacked vma merging feature just let me know so we make sure
> > not to duplicate effort.
> For 2.5.x we should rather fix MSG_MORE so that it actually works
> instead of messing with hacks to kmap().
> For 2.4.x, Hirokazu Takahashi had a patch which allowed for a safe
> kmap of > 1 page in one call. Appended here as an attachment FYI
> (Marcelo do *not* apply!).
One should also consider kmap_atomic... (bcrl suggest)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to email@example.com
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/