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Subject[PATCH v4 09/17] mm: workingset: use xas_set_lru() to pass shadow_nodes
Date
The workingset will add the xa_node to shadow_nodes, so we should use
xas_set_lru() to pass the list_lru which we want to insert xa_node
into to set up the xa_node reclaim context correctly.

Signed-off-by: Muchun Song <songmuchun@bytedance.com>
---
include/linux/swap.h | 5 ++++-
mm/workingset.c | 2 +-
2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/linux/swap.h b/include/linux/swap.h
index d1ea44b31f19..1ae9d3473c02 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -334,9 +334,12 @@ void workingset_activation(struct folio *folio);

/* Only track the nodes of mappings with shadow entries */
void workingset_update_node(struct xa_node *node);
+extern struct list_lru shadow_nodes;
#define mapping_set_update(xas, mapping) do { \
- if (!dax_mapping(mapping) && !shmem_mapping(mapping)) \
+ if (!dax_mapping(mapping) && !shmem_mapping(mapping)) { \
xas_set_update(xas, workingset_update_node); \
+ xas_set_lru(xas, &shadow_nodes); \
+ } \
} while (0)

/* linux/mm/page_alloc.c */
diff --git a/mm/workingset.c b/mm/workingset.c
index 8c03afe1d67c..979c7130c266 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -429,7 +429,7 @@ void workingset_activation(struct folio *folio)
* point where they would still be useful.
*/

-static struct list_lru shadow_nodes;
+struct list_lru shadow_nodes;

void workingset_update_node(struct xa_node *node)
{
--
2.11.0
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