[PATCH] PMFS: Enhancements to page zeroing path

[Ross Zwisler]

On Thu, 2013-10-10 at 16:56 -0600, Vishal Verma wrote:
> With the current tests for zeroing a page, there aer cases where we zero
> pages twice - if the startpage and end page happen to be the same, and
> both are 'edge' conditions.
> 
> This change fixes that, and further, instead of zeroing the whole page,
> zeroes only the part of the page which is not going to be written to.
> 
> Signed-off-by: Vishal Verma <vishal.l.verma at linux.intel.com>

Applied.