On Sat, Sep 15, 2018 at 04:34:59AM +0800, Yang Shi wrote: > When unmapping VM_PFNMAP mappings, vm flags need to be updated. Since > the vmas have been detached, so it sounds safe to update vm flags with > read mmap_sem. > > Cc: Michal Hocko <mho...@kernel.org> > Cc: Vlastimil Babka <vba...@suse.cz> > Signed-off-by: Yang Shi <yang....@linux.alibaba.com>
Reviewed-by: Matthew Wilcox <wi...@infradead.org>
