Re: Cannot partition 32GB disk on a 32bit machine (correct version of the patch this time)

From: Andrew Morton
Date: Thu Jun 19 2014 - 16:52:25 EST


On Thu, 19 Jun 2014 11:43:57 -0700 James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Do you have CONFIG_LBD turned on? That's supposed to let us go up to
> about 16TB before we run out of page index bits. If you do, we might
> have a variable that's int but should be sector_t somewhere.

I assume the problem is that iov_iter uses size_t (which is 32-bit on
32-bit) and we're trying to use iov_iter for blockdevs.

All this code is new and I've NFI how it's supposed to work and cannot
find a description anywhere.

cc's viro and runs away.
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