K 10
svn:author
V 7
asomers
K 8
svn:date
V 27
2017-11-20T22:27:33.822331Z
K 7
svn:log
V 405
da(4): Short-circuit unnecessary BIO_FLUSH commands

sys/cam/scsi/scsi_da.c
	Complete BIO_FLUSH commands immediately if the da(4) device hasn't
	been written to since the last flush. If we haven't written to the
	device, there is no reason to send a flush.

Submitted by:	gibbs
Reviewed by:	imp
MFC after:	3 weeks
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D13106

END