kib fa609f4d93 Take the spinlock around clearing of the fp->_flags in fclose(3), which
indicates the avaliability of FILE, to prevent possible reordering of
the writes as seen by other CPUs.

Reported by:	Fengwei yin <yfw.bsd gmail com>
Reviewed by:	jhb
MFC after:	1 week
2012-04-24 17:51:36 +00:00
..