From: Johannes Berg <johannes.b...@intel.com> Looks like this is needed now, otherwise we get RCU splats from lockdep. But I don't know anything about this code ...
Signed-off-by: Johannes Berg <johannes.b...@intel.com> --- arch/um/kernel/tlb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index ad449173a1a1..3cc6b753e579 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -587,8 +587,10 @@ void flush_tlb_mm(struct mm_struct *mm) struct vm_area_struct *vma; VMA_ITERATOR(vmi, mm, 0); + rcu_read_lock(); for_each_vma(vmi, vma) fix_range(mm, vma->vm_start, vma->vm_end, 0); + rcu_read_unlock(); } void force_flush_all(void) @@ -597,6 +599,8 @@ void force_flush_all(void) struct vm_area_struct *vma; VMA_ITERATOR(vmi, mm, 0); + rcu_read_lock(); for_each_vma(vmi, vma) fix_range(mm, vma->vm_start, vma->vm_end, 1); + rcu_read_unlock(); } -- 2.37.3 _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um