Tmpfs readdir() redundant logic and code readability cleanup.
r263131:
Cleanup redundant logic and add some comments to help explain how it works
in lieu of potentially less clear code.
r263174:
Rename cnt to maxcookies and change its use as the condition for when to
lookup cookies to be less obscure.
r263175:
Add missing FALLTHROUGH comment in tmpfs_dir_getdents for looking up '.'
and '..'.
1416559ea4