Alan Somers 7b8622fa22 fusefs: support EVFILT_WRITE on /dev/fuse
/dev/fuse is always ready for writing, so it's kind of dumb to poll it.
But some applications do it anyway.  Better to return ready than EINVAL.

MFC after:	2 weeks
Reviewed by:	emaste, pfg
Differential Revision: https://reviews.freebsd.org/D30784
2021-06-16 13:34:14 -06:00
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