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Date:      Mon, 16 Oct 2017 06:24:19 +0000
From:      "Owens, Keith" <Keith.Owens2@dell.com>
To:        "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
Subject:   How to map a single unmapped BIO?
Message-ID:  <0A22297308D147479E18AA1807A03807017F2378@MX202CL01.corp.emc.com>

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I have a geom that sometimes (very rarely) needs to modify the data in an u=
nmapped BIO. Completely removing unmapped support from the entire geom is o=
verkill. What is the best way of converting a single unmapped BIO to a mapp=
ed address so I can access the data?

Basically I want g_io_transient_map_bio(), but that function is static. Dup=
licating that code in my geom is not elegant.



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