K 10
svn:author
V 8
cperciva
K 8
svn:date
V 27
2011-04-26T02:06:31.685347Z
K 7
svn:log
V 399
Stop trying to zero UFS1 superblocks if we fall off the end of the disk.

This avoids a potentially many-hours-long loop of failed writes if newfs
finds a partially-overwritten superblock (or, for that matter, random
garbage which happens to have superblock magic bytes); on one occasion I
found newfs trying to zero 800 million superblocks on a 50 MB disk.

Reviewed by:	mckusick
MFC after:	1 week

END