Jeff Roberson 5949b1ca8c Move readahead and dropbehind fault functionality into a helper routine for
clarity.

Reviewed by:	dougm, kib, markj
Differential Revision:	https://reviews.freebsd.org/D23282
2020-01-21 00:12:57 +00:00
..
2020-01-14 02:14:15 +00:00
2020-01-14 02:14:15 +00:00
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