btrfs: cow_file_range() num_bytes and disk_num_bytes are same
This patch deletes local variable disk_num_bytes as its value is same as num_bytes in the function cow_file_range(). Signed-off-by:Anand Jain <anand.jain@oracle.com> Reviewed-by:
Nikolay Borisov <nborisov@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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2afb9653