Alex Ionescu f13cb8709c - Fix IRP/Completion packet lookaside allocation. We weren't setting a zone size, and I/O Completion packets were also using the wrong size.
- Rewrite I/O MDl support to use lookaside lists for allocations below 23 pages (same as on NT). This is is an incredible performance optimization because MDLs are often allocated and de-allocated during I/O operations, and using the lookaside list decreases pool fragmentation and slowdown.
- Rewrite IoBuildPartialMdl. It did not work like documented in the DDK and also had a bug documented by Microsoft as being in XP.

svn path=/trunk/; revision=22717
2006-06-30 15:59:06 +00:00
2005-12-13 18:56:49 +00:00
2006-06-26 16:39:23 +00:00
2004-02-06 08:21:52 +00:00
2005-10-02 19:31:30 +00:00
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