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mm/rmap: Turn page_referenced() into folio_referenced()

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Both its callers pass a page which was previously on an LRU list,
so were passing a folio by definition.  Use the type system to enforce
that and remove a few calls to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Matthew Wilcox (Oracle)
2022-01-21 11:27:31 -05:00
parent dcc5d337c5
commit b3ac04132c
4 changed files with 50 additions and 46 deletions
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4
include/linux/rmap.h
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@@ -190,7 +190,7 @@ static inline void page_dup_rmap(struct page *page, bool compound)
/*
* Called from mm/vmscan.c to handle paging out
*/
int page_referenced(struct page *, int is_locked,
int folio_referenced(struct folio *, int is_locked,
struct mem_cgroup *memcg, unsigned long *vm_flags);
void try_to_migrate(struct page *page, enum ttu_flags flags);
@@ -301,7 +301,7 @@ void rmap_walk_locked(struct page *page, struct rmap_walk_control *rwc);
#define anon_vma_prepare(vma) (0)
#define anon_vma_link(vma) do {} while (0)
static inline int page_referenced(struct page *page, int is_locked,
static inline int folio_referenced(struct folio *folio, int is_locked,
struct mem_cgroup *memcg,
unsigned long *vm_flags)
{