> The read() from file certainly updates vnode pages' PG_A/PG_REFERENCED, > because coping to userland is made by CPU. I think write() does the same. No, it does not. The kernel virtual mappings involved in that copy are "special"; page bits (PG_A, PG_M, etc) from those mapping are not preserved from the PTEs (at least not on x86). -DG David G. Lawrence President Download Technologies, Inc. - http://www.downloadtech.com - (866) 399 8500 The FreeBSD Project - http://www.freebsd.org Pave the road of life with opportunities.Received on Wed Oct 10 2007 - 16:13:01 UTC
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