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  struct page * fastcall __alloc_pages(unsigned int gfp_mask, unsigned int order,struct zonelist *zonelist)
  {
       const int wait = gfp_mask & __GFP_WAIT;//gfp_maskÊÇÉêÇëÄÚ´æÊ±Óõ½µÄ¿ØÖÆ×Ö£¬ÕâÒ»¾ä¾ÍÊÇΪÁ˼ì²âÎÒÃǵĿØÖÆ×ÖÀïÃæÊÇ
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        //#define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \
                                                      __GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \
                                                      __GFP_NOFAIL|__GFP_NORETRY|__GFP_NO_GROW|__GFP_COMP)
        //#define GFP_ATOMIC (__GFP_HIGH)
        //#define GFP_NOIO (__GFP_WAIT)
     &


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