Messages in this thread | | | Date | Thu, 17 May 2012 20:56:22 -0700 | Subject | Re: [PATCH 08/10] Use __kernel_ulong_t in struct msqid64_ds | From | "H.J. Lu" <> |
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On Thu, May 17, 2012 at 8:49 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Thu, May 17, 2012 at 8:39 PM, H.J. Lu <hjl.tools@gmail.com> wrote: >> >> That will be wrong. __BITS_PER_LONG defines # bits of long >> as seen by kernel. We don't use it in user space. > > Yes you do. Exactly in that structure that Peter points to. *Exactly* > because that structure uses "long" instead of some fixed size. Which > will be different in user mode than in kernel mode. > > And if user mode doesn't use these headers at all, then we should stop > playing the insane games. > > Linus
We need kernel headers for constants used in system calls. But I don't mind if kernel stops exporting data structures to user space.
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