From 24cc942015e20bb6b7ac072a750a2a8c1d6f1806 Mon Sep 17 00:00:00 2001 From: Yu Zhao Date: Wed, 28 Sep 2022 13:36:58 -0600 Subject: [PATCH] mm/mglru: Don't sync disk for each aging cycle wakeup_flusher_threads() was added under the assumption that if a system runs out of clean cold pages, it might want to write back dirty pages more aggressively so that they can become clean and be dropped. However, doing so can breach the rate limit a system wants to impose on writeback, resulting in early SSD wearout. Link: https://lkml.kernel.org/r/YzSiWq9UEER5LKup@google.com Fixes: bd74fdaea146 ("mm: multi-gen LRU: support page table walks") Reported-by: Axel Rasmussen Signed-off-by: Yu Zhao Signed-off-by: Andrew Morton Change-Id: Ib4def4286264de926b11ec5247185edc3a780619 Signed-off-by: Richard Raya --- mm/vmscan.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 1aff29079b45..f206c7485c6c 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3772,8 +3772,6 @@ done: if (wq_has_sleeper(&lruvec->mm_state.wait)) wake_up_all(&lruvec->mm_state.wait); - wakeup_flusher_threads(0, WB_REASON_VMSCAN); - return true; }