mm,thp,compaction,cma: allow THP migration for CMA allocations
The code to implement THP migrations already exists, and the code for CMA to clear out a region of memory already exists. Only a few small tweaks are needed to allow CMA to move THP memory when attempting an allocation from alloc_contig_range. With these changes, migrating THPs from a CMA area works when allocating a 1GB hugepage from CMA memory. [riel@surriel.com: fix hugetlbfs pages per Mike, cleanup per Vlastimil] Link: http://lkml.kernel.org/r/20200228104700.0af2f18d@imladris.surriel.com Signed-off-by:Rik van Riel <riel@surriel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Reviewed-by:
Zi Yan <ziy@nvidia.com> Reviewed-by:
Vlastimil Babka <vbabka@suse.cz> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: David Rientjes <rientjes@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Joonsoo Kim <js1304@gmail.com> Link: http://lkml.kernel.org/r/20200227213238.1298752-2-riel@surriel.com Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
parent
b06eda09
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