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authorMel Gorman <mel@csn.ul.ie>2010-05-24 23:32:20 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 17:06:59 +0200
commit3fe2011ff51e92500010a495df4be86745fbbda9 (patch)
treef3dc07b9d41ce5ba15805c2d3b4bc0a1a7916832 /MAINTAINERS
parentmm: migration: do not try to migrate unmapped anonymous pages (diff)
downloadlinux-3fe2011ff51e92500010a495df4be86745fbbda9.tar.xz
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mm: migration: allow the migration of PageSwapCache pages
PageAnon pages that are unmapped may or may not have an anon_vma so are not currently migrated. However, a swap cache page can be migrated and fits this description. This patch identifies page swap caches and allows them to be migrated but ensures that no attempt to made to remap the pages would would potentially try to access an already freed anon_vma. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Cc: Rik van Riel <riel@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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