On 09/14, Kirill A. Shutemov wrote:
>
> Fix is below. I don't really like it, but I cannot find any better
> solution.
Me too...
But this change "documents" the nasty special "vm_file && !vm_ops" case, and
I am not sure how we can remove it later...
So perhaps we should change vma_is_anonymous() back to check ->fault too,
static inline bool vma_is_anonymous(struct vm_area_struct *vma)
{
- return !vma->vm_ops;
+ return !vma->vm_ops || !vma->vm_ops->fault;
}
and remove the "vma->vm_file && !vma->vm_ops" checks in mmap_region() paths.
I dunno.
Oleg.
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