The patch titled
Subject: mm/workingset.c: avoid unnecessary max_nodes estimation in count_shadow_nodes()
has been removed from the -mm tree. Its filename was
mm-workingsetc-avoid-unnecessary-max_nodes-estimation-in-count_shadow_nodes.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/workingset.c: avoid unnecessary max_nodes estimation in count_shadow_nodes()
If list_lru_shrink_count is 0, we always return SHRINK_EMPTY regardless of
the value of max_nodes. So we can return early if nodes == 0 to save some
cpu cycles of approximating a reasonable limit for the nodes.
Link: https://lkml.kernel.org/r/20210123073825.46709-1-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/workingset.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/mm/workingset.c~mm-workingsetc-avoid-unnecessary-max_nodes-estimation-in-count_shadow_nodes
+++ a/mm/workingset.c
@@ -461,6 +461,8 @@ static unsigned long count_shadow_nodes(
unsigned long pages;
nodes = list_lru_shrink_count(&shadow_nodes, sc);
+ if (!nodes)
+ return SHRINK_EMPTY;
/*
* Approximate a reasonable limit for the nodes
@@ -503,9 +505,6 @@ static unsigned long count_shadow_nodes(
max_nodes = pages >> (XA_CHUNK_SHIFT - 3);
- if (!nodes)
- return SHRINK_EMPTY;
-
if (nodes <= max_nodes)
return 0;
return nodes - max_nodes;
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-memory_hotplug-use-helper-function-zone_end_pfn-to-get-end_pfn.patch
mm-mlock-stop-counting-mlocked-pages-when-none-vma-is-found.patch
mm-rmap-correct-some-obsolete-comments-of-anon_vma.patch
mm-rmap-remove-unneeded-semicolon-in-page_not_mapped.patch
mm-rmap-fix-obsolete-comment-in-__page_check_anon_rmap.patch
mm-rmap-use-page_not_mapped-in-try_to_unmap.patch
mm-rmap-correct-obsolete-comment-of-page_get_anon_vma.patch
mm-rmap-fix-potential-pte_unmap-on-an-not-mapped-pte.patch
mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch
mm-zsmallocc-use-page_private-to-access-page-private.patch
