K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2017-10-20T14:56:13.149168Z
K 7
svn:log
V 540
Avoid the nbp lookup in the final loop iteration in flushbuflist().

The end of the loop must re-lookup the next buf since the bufobj lock
is dropped in the loop body. If the lookup fails, the loop is restarted.
This mechanism non-obviously also terminates the loop when the end of
the buf list is reached. Split up the two loops termination cases to
make the code a bit less fragile. No functional change intended.

Reviewed by:	kib
MFC after:	1 week
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12730

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