On 3/23/21 6:25 PM, Brian Geffon wrote: > This reverts commit cd544fd1dc9293c6702fab6effa63dac1cc67e99. > > As discussed in [1] this commit was a no-op because the mapping type was > checked in vma_to_resize before move_vma is ever called. This meant that > vm_ops->mremap() would never be called on such mappings. Furthermore, > we've since expanded support of MREMAP_DONTUNMAP to non-anonymous > mappings, and these special mappings are still protected by the existing > check of !VM_DONTEXPAND and !VM_PFNMAP which will result in a -EINVAL. > > 1. https://lkml.org/lkml/2020/12/28/2340 > > Signed-off-by: Brian Geffon <bgeffon@xxxxxxxxxx> > Acked-by: Hugh Dickins <hughd@xxxxxxxxxx> Reviewed-by: Dmitry Safonov <0x7f454c46@xxxxxxxxx> Thanks, Dmitry
