Messages in this thread | | | Date | Sun, 25 Mar 2007 10:51:27 -0500 | From | Matt Mackall <> | Subject | Re: [patch 2/3] only allow nonlinear vmas for ram backed filesystems |
| |
On Sun, Mar 25, 2007 at 02:12:32PM +0200, Peter Zijlstra wrote: > On Sat, 2007-03-24 at 23:09 +0100, Miklos Szeredi wrote: > > From: Miklos Szeredi <mszeredi@suse.cz> > > > > Dirty page accounting/limiting doesn't work for nonlinear mappings, so > > for non-ram backed filesystems emulate with linear mappings. This > > retains ABI compatibility with previous kernels at minimal code cost. > > > > All known users of nonlinear mappings actually use tmpfs, so this > > shouldn't have any negative effect.
They do? I thought the whole point of nonlinear mappings was for mapping files bigger than the address space (eg. databases). Is Oracle instead using this to map >3G files on a tmpfs??
-- Mathematics is the supreme nostalgia of our time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |