On 02/18/2010 01:02 PM, Mel Gorman wrote:
rmap_walk_anon() was triggering errors in memory compaction that looks like use-after-free errors in anon_vma. The problem appears to be that between the page being isolated from the LRU and rcu_read_lock() being taken, the mapcount of the page dropped to 0 and the anon_vma was freed. This patch skips the migration of anon pages that are not mapped by anyone. Signed-off-by: Mel Gorman<mel@xxxxxxxxx>
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