Alexander Motin ec5a8cf7c0 Restore original array_rd_sz semantics.
Before r278702 prefetch was blocked for I/Os > 1MB, after -- >= 1MB.
1MB I/Os are used for bulk operations in CTL (XCOPY, VERIFY), and disabling
prefetch for them reduced the performance.

This is temporary local patch, that should be replaced when upstreamed.

Discussed with:	mahrens
MFC after:	3 days
2015-10-03 11:05:58 +00:00
..
2015-10-02 09:23:14 +00:00
2015-10-03 09:15:23 +00:00
2015-04-18 16:08:06 +00:00
2015-09-16 15:40:08 +00:00
2015-09-20 01:35:51 +00:00
2015-05-29 14:03:07 +00:00