Currently get_user_pages() always tries to allocate pages from movable zone,
as discussed in thread https://lkml.org/lkml/2012/11/29/69, in some case users
of get_user_pages() is easy to pin user pages for a long time(for now we found
that pages pinned as aio ring pages is such case), which is
Currently get_user_pages() always tries to allocate pages from movable zone,
as discussed in thread https://lkml.org/lkml/2012/11/29/69, in some case users
of get_user_pages() is easy to pin user pages for a long time(for now we found
that pages pinned as aio ring pages is such case), which is
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