cvs commit: src/sys/vm vm_object.c vm_page.c vm_page.h

[Alan Cox]

alc         2007-09-27 04:22:00 UTC

  FreeBSD src repository

  Modified files:
    sys/vm               vm_object.c vm_page.c vm_page.h 
  Log:
  Correct an error of omission in the reimplementation of the page
  cache: vm_object_page_remove() should convert any cached pages that
  fall with the specified range to free pages.  Otherwise, there could
  be a problem if a file is first truncated and then regrown.
  Specifically, some old data from prior to the truncation might reappear.
  
  Generalize vm_page_cache_free() to support the conversion of either a
  subset or the entirety of an object's cached pages.
  
  Reported by: tegge
  Reviewed by: tegge
  Approved by: re (kensmith)
  
  Revision  Changes    Path
  1.385     +4 -2      src/sys/vm/vm_object.c
  1.355     +43 -15    src/sys/vm/vm_page.c
  1.152     +1 -1      src/sys/vm/vm_page.h