1. 31 Jan, 2009 1 commit
    • Linus Torvalds's avatar
      Stop playing silly games with the VM_ACCOUNT flag · fc8744ad
      Linus Torvalds authored
      
      
      The mmap_region() code would temporarily set the VM_ACCOUNT flag for
      anonymous shared mappings just to inform shmem_zero_setup() that it
      should enable accounting for the resulting shm object.  It would then
      clear the flag after calling ->mmap (for the /dev/zero case) or doing
      shmem_zero_setup() (for the MAP_ANON case).
      
      This just resulted in vma merge issues, but also made for just
      unnecessary confusion.  Use the already-existing VM_NORESERVE flag for
      this instead, and let shmem_{zero|file}_setup() just figure it out from
      that.
      
      This also happens to make it obvious that the new DRI2 GEM layer uses a
      non-reserving backing store for its object allocation - which is quite
      possibly not intentional.  But since I didn't want to change semantics
      in this patch, I left it alone, and just updated the caller to use the
      new flag semantics.
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      fc8744ad
  2. 30 Jan, 2009 19 commits
  3. 29 Jan, 2009 20 commits