2384981b61
Some of the poll code used 'fds' and some used 'ufds' to refer to the uap->fds userspace pointer that was passed around to subroutines. Some of the poll code used 'fds' to refer to the kernel memory pollfd arrays, which seemed unnecessarily confusing. Unify on 'ufds' to refer to the userspace pollfd array. Additionally, 'bits' is not an accurate description of the kernel pollfd array in kern_poll, so rename that to 'kfds'. Finally, clean up some logic with mallocarray() and nitems(). No functional change. Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D17670
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