K 10
svn:author
V 7
rwatson
K 8
svn:date
V 27
2007-07-03T10:14:13.000000Z
K 7
svn:log
V 574
Fix a bug in sblock() that has existed since revision 1.1 from BSD:
correctly return an error if M_NOWAIT is passed to sblock() and the
operation might block.  This remarkably subtle macro bug appears to
be responsible for quite a few undiagnosed socket buffer corruption
and mbuf-related kernel panics.

This bug has already been fixed in 7-CURRENT as part of the move to
using sx(9) locks to serialize simultaneous socket I/O, but is an
MFC candidate for all earlier FreeBSD -STABLE branches.

MFC after:	2 weeks
Found by:	Isilon
Submitted by:	jeff
Tested by:	jhb, Yahoo!

END