K 10
svn:author
V 4
jeff
K 8
svn:date
V 27
2003-03-04T21:35:28.000000Z
K 7
svn:log
V 695
 - Hold the buf lock while manipulating and inspecting its fields.
 - Use gbincore() and not incore() so that we can drop the vnode interlock
   as we acquire the buflock.
 - Use GB_LOCK_NOWAIT when getting bufs for read ahead clusters so that we
   don't block on locked bufs.
 - Convert a while loop to a howmany() that will most likely be faster on
   modern processors.  There is another while loop divide that was left
   near by because it is operating on a 64bit int and is most likely faster.
 - Cleanup the cluster_read() code a little to get rid of a goto and make
   the logic clearer.

Tested on:	x86, alpha
Tested by:	Steve Kargl <sgk@troutmask.apl.washington.edu>
Reviewd by:	arch

END