Re: [PATCH 4/6] virsh: Create macro for "overwrite" and no-overwrite" options

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On Wed, Dec 16, 2015 at 08:44:50 -0500, John Ferlan wrote:
> 
> 
> On 12/16/2015 08:35 AM, Peter Krempa wrote:
> > On Wed, Dec 16, 2015 at 14:18:22 +0100, Michal Privoznik wrote:
> >> On 25.11.2015 20:11, John Ferlan wrote:
> >>> Although not currently used in more than one command, it soon will be
> >>> so create a common macro to be used in the new command location.
> >>>
> >>> Additionally, add the ".flags = 0," for both to match the expections
> >>> of the structure being predefined.

The compiler already does zero init for fields that are not specified
explicitly.

> >>>
> >>> Signed-off-by: John Ferlan <jferlan@xxxxxxxxxx>
> >>> ---
> >>>  tools/virsh-pool.c | 24 ++++++++++++++++--------
> >>>  1 file changed, 16 insertions(+), 8 deletions(-)
> >>>
> >>
> >> ACK
> > 
> > I don't really fancy this one. It introduces the macro for a very
> > uncommon option value. If it will be used more that 10 times it would
> > make sense. For 2 or 3 uses it does not.
> > 
> > Peter
> > 
> 
> So then in your opinion and using the same logic, patch 3 is also nixed?
> This one will get used in patch 6.

With that use it will result in total 4 uses. I won't object if you fix
the macro name and remove the comma

Patch 3 attempts to create a universal macro for any "file" option, but
that can't be really done universally. See for yourself:

git grep -A 4 '\.name = "file"'

The name of the macro would really need to be specific for pool XML file
name. Any other attempt will create confusion and I don't think it's
worth.

> 
> Like I noted in the cover letter - I see value in having the macros and
> I also see the pain (having to go look them up).
> 
> Adjusting the changes to remove/use commas is fine - just made the
> initial cut-n-paste easier
> 
> John

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