K 10
svn:author
V 6
eadler
K 8
svn:date
V 27
2012-05-30T04:06:38.384646Z
K 7
svn:log
V 243
Only set _w to 0 when the file stream is not currently reading. Without
this fflush may fail to write data in the buffer.

PR:		kern/137819
Submitted by:	Eric Blake <ebb9@byu.net>
Reviewed by:	theraven
Approved by:	cperciva
MFC after:	2 weeks

END