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Re: [dm-devel] [PATCH][RFC] dm: Do not open log and cow device read-write for read-only mappings



On Tue, Feb 15, 2011 at 05:05:48PM +0100, Milan Broz wrote:
> On 02/15/2011 04:50 PM, Tejun Heo wrote:
> >> That's why I'm arguing EACCES is not a good error to return and EROFS is
> >> more appropriate.
> > 
> > Frankly, I don't really mind one way or the other but EROFS isn't
> > usually used in those areas.  It might make sense for this use case
> > and then there will be cases it just feels awkward.  This being a dm
> > thing, wouldn't it be just better to let dm massage the return value?
> 
> It is not DM thing. That code was checking for generic block device.
> No DM there (it was from cryptsetup code but not related to DM part).

Hmmm... I'm confused now.  Where was that -EROFS from then?  I don't
recall changing -EROFS to -EACCES.  What did I miss?

-- 
tejun


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