[PATCH V3] xfs_io: add mremap command

[Eric Sandeen]

On 9/13/14 2:45 PM, Christoph Hellwig wrote:
> On Fri, Sep 12, 2014 at 11:54:43AM -0500, Eric Sandeen wrote:
>> This adds a simple mremap command to xfs_io.
>>
>> It does not take a start address; it uses the existing
>> start address, so the sized passed will be the new total
>> size of the mapping.
>>
>> Signed-off-by: Eric Sandeen <sandeen at redhat.com>
> 
> Looks good to me, but I'd feel much more comfortable about merging it
> if we had an xfstests test case that actually exercises it.
> 

I did it for a crazy mremap failure we saw, I'll probably end up
writing a testcase for that which uses it.

I could easily enough write a test to exercise this directly too,
I'll look into it.

Thanks,
-Eric