Loop Linux-mm, thanks.

I want to know, why lowmemory killer not included ION free memory?

Thnanks.

From: Zhiyuan Zhu(朱志遠)
Sent: Friday, May 12, 2017 4:56 PM
To: vinmenon@codeaurora.org
Cc: Kyle Lin(林昭凱); Zhiyuan Zhu(朱志遠)
Subject: Low memory killer problem

Dear Vinmenon,

I found a part of ION memory will be return to system in android platform,

But these memorys  can’t accounted in low-memory-killer strategy.

…

And I also found ION memory comes from, kmalloc/vmalloc/alloc pages/reserved memory.

What affect if account these memorys for free?

Many thanks.

…

Lowmemory killer strategy

af6c02b83 (Vinayak Menon      2015-08-27 16:29:37 +0530 418)            global_page_state(NR_FILE_PAGES) + zcache_pages())

af6c02b83 (Vinayak Menon      2015-08-27 16:29:37 +0530 419)            other_file = global_page_state(NR_FILE_PAGES) + zcache_pages() -

058dbde92 (Vinayak Menon      2014-02-27 00:36:22 +0530 420)                                            global_page_state(NR_SHMEM) -

058dbde92 (Vinayak Menon      2014-02-27 00:36:22 +0530 422)                                            total_swapcache_pages();

Meminfo example

$ adb shell cat /proc/meminfo

MemTotal:        3805312 kB

MemFree:         1446220 kB

MemAvailable:    2388384 kB

Buffers:           16796 kB

Cached:          1190868 kB

…

IonTotal:         224252 kB

IonInUse:         199108 kB

Thanks

BR

Zhiyuan zhu