Shaohua Li reported parallel file copy on tmpfs can lead to
OOM killer. This is regression of caused by commit 9ff473b9a7
(vmscan: evict streaming IO first). Wow, It is 2 years old patch!
Thus, now we can use lru_cache_add_anon() instead.
Reported-by: Shaohua Li<shaohua.li@xxxxxxxxx>
Cc: Wu Fengguang<fengguang.wu@xxxxxxxxx>
Cc: Johannes Weiner<hannes@xxxxxxxxxxx>
Cc: Rik van Riel<riel@xxxxxxxxxx>
Cc: Minchan Kim<minchan.kim@xxxxxxxxx>
Cc: Hugh Dickins<hughd@xxxxxxxxxx>
Signed-off-by: KOSAKI Motohiro<kosaki.motohiro@xxxxxxxxxxxxxx>