From b64e74e95aa6491b31477e9002aab1d8df3995bf Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Mon, 19 Feb 2024 07:27:09 +0100
Subject: mm: move mapping_set_update out of <linux/swap.h>

mapping_set_update is only used inside mm/.  Move mapping_set_update to
mm/internal.h and turn it into an inline function instead of a macro.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
---
 mm/filemap.c    | 9 +++++++++
 mm/internal.h   | 4 ++++
 mm/workingset.c | 1 +
 3 files changed, 14 insertions(+)

(limited to 'mm')

diff --git a/mm/filemap.c b/mm/filemap.c
index 750e779c23db..6c8b089f00d2 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -124,6 +124,15 @@
  *    ->private_lock		(zap_pte_range->block_dirty_folio)
  */
 
+static void mapping_set_update(struct xa_state *xas,
+		struct address_space *mapping)
+{
+	if (dax_mapping(mapping) || shmem_mapping(mapping))
+		return;
+	xas_set_update(xas, workingset_update_node);
+	xas_set_lru(xas, &shadow_nodes);
+}
+
 static void page_cache_delete(struct address_space *mapping,
 				   struct folio *folio, void *shadow)
 {
diff --git a/mm/internal.h b/mm/internal.h
index f309a010d50f..4398f572485f 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -1266,4 +1266,8 @@ static inline void shrinker_debugfs_remove(struct dentry *debugfs_entry,
 }
 #endif /* CONFIG_SHRINKER_DEBUG */
 
+/* Only track the nodes of mappings with shadow entries */
+void workingset_update_node(struct xa_node *node);
+extern struct list_lru shadow_nodes;
+
 #endif	/* __MM_INTERNAL_H */
diff --git a/mm/workingset.c b/mm/workingset.c
index 226012974328..f2a0ecaf708d 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -16,6 +16,7 @@
 #include <linux/dax.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
+#include "internal.h"
 
 /*
  *		Double CLOCK lists
-- 
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