Re: zap_page_range(): TLB flush race

[David S. Miller]

   From: [e-mail] (Kanoj Sarcar)
   Date: 	Sat, 8 Apr 2000 14:11:05 -0700 (PDT)

   > filemap_sync() calls flush_tlb_page() for each page, but IMHO this is a
   > really bad idea, the performance will suck with multi-threaded apps on
   > SMP.

   The best you can do probably is a flush_tlb_range?

People, look at the callers of filemap_sync, it does range tlb/cache
flushes so the flushes in filemap_sync_pte() are in fact spurious.

Later,
David S. Miller
[e-mail]