cvs commit: src/sys/kern uipc_cow.c uipc_syscalls.c src/sys/sys socketvar.h

Alan Cox alc at
Fri Mar 28 22:14:18 PST 2003

alc         2003/03/28 22:14:15 PST

  FreeBSD src repository

  Modified files:
    sys/kern             uipc_cow.c uipc_syscalls.c 
    sys/sys              socketvar.h 
  Pass the vm_page's address to sf_buf_alloc(); map the vm_page as part
  of sf_buf_alloc() instead of expecting sf_buf_alloc()'s caller to map it.
  The ultimate reason for this change is to enable two optimizations:
  (1) that there never be more than one sf_buf mapping a vm_page at a time
  and (2) 64-bit architectures can transparently use their 1-1 virtual
  to physical mapping (e.g., "K0SEG") avoiding the overhead of pmap_qenter()
  and pmap_qremove().
  Revision  Changes    Path
  1.12      +1 -3      src/sys/kern/uipc_cow.c
  1.144     +6 -9      src/sys/kern/uipc_syscalls.c
  1.103     +1 -1      src/sys/sys/socketvar.h

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