[Midnightbsd-cvs] src: tmpfs.h: Change how tmpfs calculates available pages.

[laffer1 at midnightbsd.org]

Log Message:
-----------
Change how tmpfs calculates available pages.  

This stops a lot of problems with ZFS enabled and small swap sizes.

Obtained from: FreeBSD (svn 227802)

Modified Files:
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    src/sys/fs/tmpfs:
        tmpfs.h (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/sys/fs/tmpfs/tmpfs.h?r1=1.2&r2=1.3)