From: "David S. Miller" <davem@redhat.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: axboe@suse.de, linux-kernel@vger.kernel.org
Subject: Re: [BLOCK] phys_contig implies hw_contig
Date: Mon, 3 Nov 2003 14:40:21 -0800 [thread overview]
Message-ID: <20031103144021.4b884b48.davem@redhat.com> (raw)
In-Reply-To: <20031102221026.GA9976@gondor.apana.org.au>
On Mon, 3 Nov 2003 09:10:26 +1100
Herbert Xu <herbert@gondor.apana.org.au> wrote:
> On Sun, Nov 02, 2003 at 03:47:34PM +1100, herbert wrote:
> > On Sat, Nov 01, 2003 at 08:45:47PM -0800, David S. Miller wrote:
> >
> > > Your analysis assumes that phys contig implies hw contig, I
> > > believe it does not. There may be limitations in the VMERGE
> > > mechanism a platform implements that causes this situation to
> > > arise.
> >
> > OK, if that's the case, then we better change blk_recount_segments
> > as it assumes this.
>
> Bug David that can't be right. If two segments are physically contiguous,
> then they don't need to be remapped to be virtually continguous, right?
Yes it sounds silly.
To be honest I'm more concerned that things are consistent.
Therefore I recommend that your original patch is applied.
prev parent reply other threads:[~2003-11-03 22:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-01 2:31 [BLOCK] phys_contig implies hw_contig Herbert Xu
2003-11-02 4:45 ` David S. Miller
2003-11-02 4:47 ` Herbert Xu
2003-11-02 22:10 ` Herbert Xu
2003-11-03 22:40 ` David S. Miller [this message]
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