[dm-devel] [PATCH] md/dm-ioctl.c: optimize memory allocation in copy_params

[Mikulas Patocka]

On Wed, 23 Jul 2014, Zhang, Yanmin wrote:

> On 2014/7/22 9:23, Alasdair G Kergon wrote:
> > > > > On 2014/7/9 6:39, Mikulas Patocka wrote:
> > > > Which ioctl with more than 16kB
> > > > arguments do you use?
> > Unanswered.  Let's ask the same question in a different way:
> > 
> > Please supply the output of these three commands on the real-world system on
> > which you believe that that particular allocation is causing you a problem:
> >    dmsetup info -c
> >    dmsetup table
> >    dmsetup status
> 
> Android doesn't include the command. We compiled lvm2-2_02_107.tar.gz and copy
> dmsetup to the board. But command reports No devices.
> 
> # /data/bin/dmsetup info
> No devices found

So, it means that you do not use device mapper at all. So, why are you 
trying to change memory allocation in device mapper?

Mikulas