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authorYu Zhao <yuzhao@google.com>2022-09-28 22:36:58 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-10-08 00:28:39 +0300
commit14aa8b2d5c2ebead01b542f62d68029023054774 (patch)
tree31f0ace9fb727fee9c89c916dea4c9614d75937e /mm
parente55b9f96860f6c6026cff97966a740576285e07b (diff)
downloadlinux-14aa8b2d5c2ebead01b542f62d68029023054774.tar.xz
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") Signed-off-by: Yu Zhao <yuzhao@google.com> Reported-by: Axel Rasmussen <axelrasmussen@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/vmscan.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index c5a4bff11da6..3240d5dd7784 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4413,8 +4413,6 @@ done:
if (wq_has_sleeper(&lruvec->mm_state.wait))
wake_up_all(&lruvec->mm_state.wait);
- wakeup_flusher_threads(WB_REASON_VMSCAN);
-
return true;
}