path: root/mm/zswap.c
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authorJohannes Weiner <>2014-08-08 14:19:33 -0700
committerLinus Torvalds <>2014-08-08 15:57:18 -0700
commit6abb5a867ba0866cb21827b172cee6aa71244bd1 (patch)
tree069d4eac9f0bfa9586c978362c9b7c7d0d40b288 /mm/zswap.c
parent3cbb01871e22709fdd39478eca831de317df332f (diff)
mm: memcontrol: avoid charge statistics churn during page migration
Charge migration currently disables IRQs twice to update the charge statistics for the old page and then again for the new page. But migration is a seamless transition of a charge from one physical page to another one of the same size, so this should be a non-event from an accounting point of view. Leave the statistics alone. Signed-off-by: Johannes Weiner <> Acked-by: Michal Hocko <> Cc: Hugh Dickins <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'mm/zswap.c')
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