[openwrt/openwrt] generic: 5.15: move MGLRU patches from pending to backport

Mon Oct 24 16:04:38 PDT 2022

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/2a7bdde29bebcaeb18c8595d31ca0d89b5719a1a

commit 2a7bdde29bebcaeb18c8595d31ca0d89b5719a1a
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Sat Oct 22 00:24:49 2022 +0200

    generic: 5.15: move MGLRU patches from pending to backport
    
    Move MGLRU patches from pending to backport as they got merged upstream.
    These are direct porting from one of the dev so it's better to just move
    than trying to backport them again from upstream.
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 ...1-mm-x86-arm64-add-arch_has_hw_pte_young.patch} |  0
 ...86-add-CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG.patch} |  0
 ...v6.1-03-mm-vmscan.c-refactor-shrink_node.patch} |  0
 ...1-04-mm-multigenerational-lru-groundwork.patch} |  0
 ...-mm-multigenerational-lru-mm_struct-list.patch} |  0
 ...0-v6.1-06-mm-multigenerational-lru-aging.patch} |  0
 ...6.1-07-mm-multigenerational-lru-eviction.patch} |  0
 ...-mm-multigenerational-lru-user-interface.patch} |  0
 ...v6.1-09-mm-multigenerational-lru-Kconfig.patch} |  0
 ...0-mm-multigenerational-lru-documentation.patch} |  0
 ...glru-don-t-sync-disk-for-each-aging-cycle.patch | 32 ++++++++++++++++++++++
 11 files changed, 32 insertions(+)

diff --git a/target/linux/generic/pending-5.15/020-00-mm-x86-arm64-add-arch_has_hw_pte_young.patch b/target/linux/generic/backport-5.15/020-v6.1-01-mm-x86-arm64-add-arch_has_hw_pte_young.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-00-mm-x86-arm64-add-arch_has_hw_pte_young.patch
rename to target/linux/generic/backport-5.15/020-v6.1-01-mm-x86-arm64-add-arch_has_hw_pte_young.patch
diff --git a/target/linux/generic/pending-5.15/020-01-mm-x86-add-CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG.patch b/target/linux/generic/backport-5.15/020-v6.1-02-mm-x86-add-CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-01-mm-x86-add-CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG.patch
rename to target/linux/generic/backport-5.15/020-v6.1-02-mm-x86-add-CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG.patch
diff --git a/target/linux/generic/pending-5.15/020-02-mm-vmscan.c-refactor-shrink_node.patch b/target/linux/generic/backport-5.15/020-v6.1-03-mm-vmscan.c-refactor-shrink_node.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-02-mm-vmscan.c-refactor-shrink_node.patch
rename to target/linux/generic/backport-5.15/020-v6.1-03-mm-vmscan.c-refactor-shrink_node.patch
diff --git a/target/linux/generic/pending-5.15/020-03-mm-multigenerational-lru-groundwork.patch b/target/linux/generic/backport-5.15/020-v6.1-04-mm-multigenerational-lru-groundwork.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-03-mm-multigenerational-lru-groundwork.patch
rename to target/linux/generic/backport-5.15/020-v6.1-04-mm-multigenerational-lru-groundwork.patch
diff --git a/target/linux/generic/pending-5.15/020-04-mm-multigenerational-lru-mm_struct-list.patch b/target/linux/generic/backport-5.15/020-v6.1-05-mm-multigenerational-lru-mm_struct-list.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-04-mm-multigenerational-lru-mm_struct-list.patch
rename to target/linux/generic/backport-5.15/020-v6.1-05-mm-multigenerational-lru-mm_struct-list.patch
diff --git a/target/linux/generic/pending-5.15/020-05-mm-multigenerational-lru-aging.patch b/target/linux/generic/backport-5.15/020-v6.1-06-mm-multigenerational-lru-aging.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-05-mm-multigenerational-lru-aging.patch
rename to target/linux/generic/backport-5.15/020-v6.1-06-mm-multigenerational-lru-aging.patch
diff --git a/target/linux/generic/pending-5.15/020-06-mm-multigenerational-lru-eviction.patch b/target/linux/generic/backport-5.15/020-v6.1-07-mm-multigenerational-lru-eviction.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-06-mm-multigenerational-lru-eviction.patch
rename to target/linux/generic/backport-5.15/020-v6.1-07-mm-multigenerational-lru-eviction.patch
diff --git a/target/linux/generic/pending-5.15/020-07-mm-multigenerational-lru-user-interface.patch b/target/linux/generic/backport-5.15/020-v6.1-08-mm-multigenerational-lru-user-interface.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-07-mm-multigenerational-lru-user-interface.patch
rename to target/linux/generic/backport-5.15/020-v6.1-08-mm-multigenerational-lru-user-interface.patch
diff --git a/target/linux/generic/pending-5.15/020-08-mm-multigenerational-lru-Kconfig.patch b/target/linux/generic/backport-5.15/020-v6.1-09-mm-multigenerational-lru-Kconfig.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-08-mm-multigenerational-lru-Kconfig.patch
rename to target/linux/generic/backport-5.15/020-v6.1-09-mm-multigenerational-lru-Kconfig.patch
diff --git a/target/linux/generic/pending-5.15/020-09-mm-multigenerational-lru-documentation.patch b/target/linux/generic/backport-5.15/020-v6.1-10-mm-multigenerational-lru-documentation.patch
similarity index 100%
rename from target/linux/generic/pending-5.15/020-09-mm-multigenerational-lru-documentation.patch
rename to target/linux/generic/backport-5.15/020-v6.1-10-mm-multigenerational-lru-documentation.patch
diff --git a/target/linux/generic/backport-5.15/021-v6.1-mm-mglru-don-t-sync-disk-for-each-aging-cycle.patch b/target/linux/generic/backport-5.15/021-v6.1-mm-mglru-don-t-sync-disk-for-each-aging-cycle.patch
new file mode 100644
index 0000000000..269e5eb204
--- /dev/null
+++ b/target/linux/generic/backport-5.15/021-v6.1-mm-mglru-don-t-sync-disk-for-each-aging-cycle.patch
@@ -0,0 +1,32 @@
+From 14aa8b2d5c2ebead01b542f62d68029023054774 Mon Sep 17 00:00:00 2001
+From: Yu Zhao <yuzhao at google.com>
+Date: Wed, 28 Sep 2022 13:36:58 -0600
+Subject: [PATCH 1/1] 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 at google.com>
+Reported-by: Axel Rasmussen <axelrasmussen at google.com>
+Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
+---
+ mm/vmscan.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -4072,8 +4072,6 @@ static bool try_to_inc_max_seq(struct lr
+ 	if (wq_has_sleeper(&lruvec->mm_walk.wait))
+ 		wake_up_all(&lruvec->mm_walk.wait);
+ 
+-	wakeup_flusher_threads(WB_REASON_VMSCAN);
+-
+ 	return true;
+ }
+ 


