mm: memcontrol: clarify migration where old page is uncharged

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Better explain re-entrant migration when compaction races with reclaim,
and also mention swapcache readahead pages as possible uncharged migration
sources.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Johannes Weiner 2014-12-10 15:43:46 -08:00 • committed by Linus Torvalds

parent dfe0e773d0

commit 7d5e324573

1 changed files with 6 additions and 1 deletions

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mm/memcontrol.c

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