/dev/shm (tmpfs) - boot mount difference 5.7 and 6.1

Hello,

/dev/shm can be sized explicit (size=xxx[m|g])

Mount options for tmpfs (OEL 5.7 - man page)
       The following parameters accept a suffix k, m or g for Ki, Mi, Gi (binary kilo, mega  and  giga)  and  can  be
       changed on remount.

       size=nbytes
              Override  default  maximum  size  of  the  filesystem.  The size is given in bytes, and rounded down to
              entire pages.  The default is half of the memory.

Mount options for tmpfs (OEL 6.1 - man page)
       size=nbytes
              Override default maximum size of the filesystem.  The size is given in bytes, and rounded  up
              to entire pages.  The default is half of the memory. The size parameter also accepts a suffix