.TP
.BR allocsize=size
Sets the buffered I/O end-of-file preallocation size when
-doing delayed allocation writeout (default size is 64\ KiB).
-Valid values for this option are page size (typically 4\ KiB)
-through to 1\ GiB, inclusive, in power-of-2 increments.
+doing delayed allocation writeout. Valid values for this
+option are page size (typically 4KiB) through to 1GiB,
+inclusive, in power-of-2 increments.
.sp
The default behaviour is for dynamic end-of-file
preallocation size, which uses a set of heuristics to