[dm-devel] [PATCH 14/24] dm cache: use is_write_io() in more places
Mike Snitzer
snitzer at redhat.com
Fri Oct 25 20:11:59 UTC 2013
On Fri, Oct 25 2013 at 3:53pm -0400,
Alasdair G Kergon <agk at redhat.com> wrote:
> On Thu, Oct 24, 2013 at 02:30:27PM -0400, Mike Snitzer wrote:
> > From: Heinz Mauelshagen <heinzm at redhat.com>
>
> > Use is_write_io() consistently where it is makes sense.
>
> > +++ b/drivers/md/dm-cache-target.c
>
> > +static bool is_write_io(struct bio *bio)
> > +{
> > + return bio_data_dir(bio) == WRITE;
> > +}
>
> I'm not really convinced about this one, though I can see some superficial
> attractiveness. I think introducing it in a single file (rather than
> kernel-wide) is obfuscating the code rather than making it more readable.
>
> If a change like this were to happen, wouldn't fs.h be a better place?
is_write_io() was already in dm-cache-target.c, this patch just makes
use of it in more applicable places.
But I'm fine with completely eliminating is_write_io()... whatever
others would prefer.
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