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From: Peter Wemm <peter@FreeBSD.ORG>
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	Fri, 1 May 1998 08:11:00 -0700 (PDT)
Date: Fri, 1 May 1998 08:11:00 -0700 (PDT)
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To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG
Subject: cvs commit: src/sys/kern vfs_bio.c
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peter       1998/05/01 08:11:00 PDT

  Modified files:
    sys/kern             vfs_bio.c 
  Log:
  vm_page_is_valid() wasn't expecting a large offset argument, it's
  expecting a sub-page offset.  We were passing the file position,
  and vm_page_bits() could do some interesting things when base was
  larger PAGE_SIZE.
  if (size > PAGE_SIZE - base)
  	size = PAGE_SIZE - base;
  is interesting when (PAGE_SIZE - base) is negative.  I could imagine that
  this could have interesting consequences for memory page -> device block
  bit validation.
  
  Revision  Changes    Path
  1.164     +3 -2      src/sys/kern/vfs_bio.c