Jeff Roberson 67d0e29304 Replace OBJ_MIGHTBEDIRTY with a system using atomics. Remove the TMPFS_DIRTY
flag and use the same system.

This enables further fault locking improvements by allowing more faults to
proceed with a shared lock.

Reviewed by:	kib
Tested by:	pho
Differential Revision:	https://reviews.freebsd.org/D22116
2019-10-29 21:06:34 +00:00
..
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