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ANDROID: lowmemorykiller: account for unevictable pages

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lowmemorykiller was not taking into account unevictable pages when
deciding what level to kill. If significant amounts of memory were
pinned, this caused lowmemorykiller to effectively stop at a much higher
level than it should.

bug 31255977

Change-Id: I763ecbfef8c56d65bb8f6147ae810692bd81b6e2
Signed-off-by: Tim Murray <timmurray@google.com>
This commit is contained in:
Tim Murray 2016-09-02 16:04:41 -07:00 • committed by Dmitry Shmidt
parent 9a83b8157a
commit 2ba2ada07d
1 changed files with 1 additions and 0 deletions
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drivers/staging/android/lowmemorykiller.c
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@ -94,6 +94,7 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
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_UNEVICTABLE) -
total_swapcache_pages();
if (lowmem_adj_size < array_size)