cvs commit: src/sys/kern sys_pipe.c

Alan Cox alc at
Sun Aug 10 21:23:36 PDT 2003

alc         2003/08/10 17:17:44 PDT

  FreeBSD src repository

  Modified files:
    sys/kern             sys_pipe.c 
  Use vm_page_hold() instead of vm_page_wire().  Otherwise, a multithreaded
  application could cause a wired page to be freed.  In general,
  vm_page_hold() should be preferred for ephemeral kernel mappings of pages
  borrowed from a user-level address space.  (vm_page_wire() should really be
  reserved for indefinite duration pinning by the "owner" of the page.)
  Discussed with: silby
  Submitted by:   tegge
  Revision  Changes    Path
  1.144     +3 -3      src/sys/kern/sys_pipe.c

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