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vmscan: add newly swapped in pages to the inactive list

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Swapin_readahead can read in a lot of data that the processes in memory
never need.  Adding swap cache pages to the inactive list prevents them
from putting too much pressure on the working set.

This has the potential to help the programs that are already in memory,
but it could also be a disadvantage to processes that are trying to get
swapped in.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rik van Riel 2008-10-18 20:26:36 -07:00 committed by Linus Torvalds
parent 7e9cd48420
commit c5fdae469a
1 changed files with 1 additions and 1 deletions
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2
mm/swap_state.c
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@ -310,7 +310,7 @@ struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
/*
* Initiate read into locked page and return.
*/
lru_cache_add_active_anon(new_page);
lru_cache_add_anon(new_page);
swap_readpage(NULL, new_page);
return new_page;
}