The patch titled Subject: mm: export mmu notifier invalidates has been added to the -mm tree. Its filename is mm-export-mmu-notifier-invalidates.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Cliff Wickman <cpw@xxxxxxx> Subject: mm: export mmu notifier invalidates We at SGI have a need to address some very high physical address ranges with our GRU (global reference unit), sometimes across partitioned machine boundaries and sometimes with larger addresses than the cpu supports. We do this with the aid of our own 'extended vma' module which mimics the vma. When something (either unmap or exit) frees an 'extended vma' we use the mmu notifiers to clean them up. We had been able to mimic the functions __mmu_notifier_invalidate_range_start() and __mmu_notifier_invalidate_range_end() by locking the per-mm lock and walking the per-mm notifier list. But with the change to a global srcu lock (static in mmu_notifier.c) we can no longer do that. Our module has no access to that lock. So we request that these two functions be exported. Signed-off-by: Cliff Wickman <cpw@xxxxxxx> Acked-by: Robin Holt <holt@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/mmu_notifier.c | 2 ++ 1 file changed, 2 insertions(+) diff -puN mm/mmu_notifier.c~mm-export-mmu-notifier-invalidates mm/mmu_notifier.c --- a/mm/mmu_notifier.c~mm-export-mmu-notifier-invalidates +++ a/mm/mmu_notifier.c @@ -172,6 +172,7 @@ void __mmu_notifier_invalidate_range_sta } srcu_read_unlock(&srcu, id); } +EXPORT_SYMBOL_GPL(__mmu_notifier_invalidate_range_start); void __mmu_notifier_invalidate_range_end(struct mm_struct *mm, unsigned long start, unsigned long end) @@ -187,6 +188,7 @@ void __mmu_notifier_invalidate_range_end } srcu_read_unlock(&srcu, id); } +EXPORT_SYMBOL_GPL(__mmu_notifier_invalidate_range_end); static int do_mmu_notifier_register(struct mmu_notifier *mn, struct mm_struct *mm, _ Patches currently in -mm which might be from cpw@xxxxxxx are linux-next.patch mm-export-mmu-notifier-invalidates.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html