Konstantin Belousov 3979450b4c Add new make_dev_p(9) flag MAKEDEV_ETERNAL to inform devfs that created
cdev will never be destroyed. Propagate the flag to devfs vnodes as
VV_ETERNVALDEV. Use the flags to avoid acquiring devmtx and taking a
thread reference on such nodes.

In collaboration with:	pho
MFC after:	1 month
2010-08-06 09:42:15 +00:00
..
2010-06-28 18:17:21 +00:00
2010-01-07 01:24:09 +00:00
2010-07-09 10:57:55 +00:00
2010-06-28 18:17:21 +00:00
2010-01-04 20:59:52 +00:00
2009-05-26 09:19:21 +00:00
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