Re: [RFC v10 PATCH 3/3] mm: unmap VM_PFNMAP mappings with optimized path

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 > Cc: Vlastimil Babka > Signed-off-by: Yang Shi

Re: [RFC v10 PATCH 3/3] mm: unmap VM_PFNMAP mappings with optimized path

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 > Cc: Vlastimil Babka > Signed-off-by: Yang Shi