K 10
svn:author
V 8
rmacklem
K 8
svn:date
V 27
2020-06-10T02:51:39.133600Z
K 7
svn:log
V 564
Add two functions that create M_EXTPG mbufs with anonymous pages.

These two functions are needed by nfs-over-tls, but could also be
useful for other purposes.
mb_alloc_ext_plus_pages() - Allocates a M_EXTPG mbuf and enough anonymous
      pages to store "len" data bytes.
mb_mapped_to_unmapped() - Copies the data from a list of mapped (non-M_EXTPG)
      mbufs into a list of M_EXTPG mbufs allocated with anonymous pages.
      This is roughly the inverse of mb_unmapped_to_ext().

Reviewed by:	gallatin
Differential Revision:	https://reviews.freebsd.org/D25182

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