[lkml]   [2003]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH] Alternate futex non-page-pinning and COW fix

    On Thu, 4 Sep 2003, Linus Torvalds wrote:
    > Oh. I see. Yes - it's accessing "vm_flags" with "MAP_SEM". That's really
    > wrong, since it's not even the same _domain_.

    How about something like this that at least gets it closer? It fixes the
    fact that incorrect usage of PROT_SEM would allow users to set the
    VM_SHARED bit behind the back of the OS, which sounds like a total
    disaster and which can potentially confuse other parts of the VM.

    It's not a very _pretty_ fix, but there really is no excuse for PROT_xxx
    to not match VM_xxx for the three standard protection flags, so in that
    sense it is the technically "sane" approach. We might want to just
    simplify the mmap() code too..


    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2009-11-18 23:46    [W:0.024 / U:67.440 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site