Messages in this thread | | | Date | Mon, 13 Feb 2006 11:05:37 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: madvise MADV_DONTFORK/MADV_DOFORK |
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On Mon, 13 Feb 2006, Michael S. Tsirkin wrote: > > Add madvise options to control whether memory range is inherited across fork. > Useful e.g. for when hardware is doing DMA from/into these pages. > > Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> > > - if (mpnt->vm_flags & VM_DONTCOPY) { > + if (mpnt->vm_flags & (VM_DONTCOPY | VM_DONTFORK)) {
Why?
That VM_DONTCOPY _is_ DONTFORK.
Don't add a new useless DONTFORK that doesn't have any value.
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