Messages in this thread | | | Date | Wed, 8 Oct 2008 00:05:18 +0100 | From | Alan Cox <> | Subject | Re: [PATCH, v3] shmat: introduce flag SHM_MAP_NOT_FIXED |
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On Tue, 7 Oct 2008 23:10:38 +0200 Andi Kleen <andi@firstfloor.org> wrote:
> > Sorry, no. > > This description still doesn't explain why this interface is needed. > > > > The one of the points is this interface is used by another person or not. > > You should explain how large this interface benefit has. > > > > Andi kleen explained this interface _can_ be used another one. > > but nobody explain who use it actually. > > Anyone who doesn't want to use fixed addresses.
Can use shm_open and mmap to get POSIX standard shm behaviour via a sane interface without adding more crap to the sys3 shm madness.
Sorry this patch is completely bogus - introduce the user programs involved to 1990s technology. They have to be updated to use such a change as is proposed anyway so they might as well use shm_open/mmap at which point no kernel changes are needed.
Alan
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