On 09/13/2017 12:03 PM, Eric Blake wrote:
> During 'qemu-img compare', when we are checking that an allocated
> portion of one file is all zeros, we don't need to waste time
> computing how many additional sectors after the first non-zero
> byte are also non-zero. Create a new helper find_nonzer
During 'qemu-img compare', when we are checking that an allocated
portion of one file is all zeros, we don't need to waste time
computing how many additional sectors after the first non-zero
byte are also non-zero. Create a new helper find_nonzero() to do
the check for a first non-zero sector, and
