K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2020-08-06T15:43:15.451733Z
K 7
svn:log
V 438
Clean up reassignbuf() and buf_vlist_remove() a bit.

- Convert panic() calls to INVARIANTS-only assertions.  The PCTRIE code
  provides some of the same protection since it will panic upon an
  attempt to remove a non-resident buffer.
- Update the comment above reassignbuf() to reflect reality.

Reviewed by:	cem, kib, mjg
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25965

END