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staging: android: lowmemorykiller: neglect swap cached pages in other_file 

With ZRAM enabled it is observed that lowmemory killer
doesn't trigger properly. swap cached pages are
accounted in NR_FILE, and lowmemorykiller considers
this as reclaimable and adds to other_file. But these
pages can't be reclaimed unless lowmemorykiller triggers.
So subtract swap pages from other_file.

Signed-off-by: Vinayak Menon <vinayakm.list@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vinayak Menon 2014-02-27 00:36:22 +05:30 committed by Greg Kroah-Hartman
parent 12f2200f98
commit 058dbde928
1 changed files with 2 additions and 1 deletions
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3
drivers/staging/android/lowmemorykiller.c
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@ -88,7 +88,8 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
int array_size = ARRAY_SIZE(lowmem_adj);
int other_free = global_page_state(NR_FREE_PAGES) - totalreserve_pages;
int other_file = global_page_state(NR_FILE_PAGES) -
global_page_state(NR_SHMEM);
global_page_state(NR_SHMEM) -
total_swapcache_pages();
if (lowmem_adj_size < array_size)
array_size = lowmem_adj_size;