K 10
svn:author
V 5
dougm
K 8
svn:date
V 27
2019-07-11T20:52:39.219453Z
K 7
svn:log
V 529
Address problems in blist_alloc introduced in r349777.  The swap block allocator could become corrupted
if a retry to allocate swap space, after a larger allocation attempt failed, allocated a smaller set of free blocks
that ended on a 32- or 64-block boundary.

Add tests to detect this kind of failure-to-extend-at-boundary and prevent the associated accounting screwup.

Reported by: pho
Tested by: pho
Reviewed by: alc
Approved by: markj (mentor)
Discussed with: kib
Differential Revision: https://reviews.freebsd.org/D20893

END