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authorMatthew Wilcox (Oracle) <willy@infradead.org>2023-08-22 21:23:35 +0100
committerAndrew Morton <akpm@linux-foundation.org>2023-08-24 16:20:31 -0700
commit8f9ff2deb8b91ad1cba666c7adbe4ca79e2d3225 (patch)
tree7ccd50ea802f90c07ca26d685a7104a5f0835da6 /include/linux/secretmem.h
parent7db15418d390cf878d7c77ae08a4ad39f1534bc5 (diff)
secretmem: convert page_is_secretmem() to folio_is_secretmem()
The only caller already has a folio, so use it to save calling compound_head() in PageLRU() and remove a use of page->mapping. Link: https://lkml.kernel.org/r/20230822202335.179081-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/secretmem.h')
-rw-r--r--include/linux/secretmem.h15
1 files changed, 7 insertions, 8 deletions
diff --git a/include/linux/secretmem.h b/include/linux/secretmem.h
index 988528b5da43..35f3a4a8ceb1 100644
--- a/include/linux/secretmem.h
+++ b/include/linux/secretmem.h
@@ -6,24 +6,23 @@
extern const struct address_space_operations secretmem_aops;
-static inline bool page_is_secretmem(struct page *page)
+static inline bool folio_is_secretmem(struct folio *folio)
{
struct address_space *mapping;
/*
- * Using page_mapping() is quite slow because of the actual call
- * instruction and repeated compound_head(page) inside the
- * page_mapping() function.
+ * Using folio_mapping() is quite slow because of the actual call
+ * instruction.
* We know that secretmem pages are not compound and LRU so we can
* save a couple of cycles here.
*/
- if (PageCompound(page) || !PageLRU(page))
+ if (folio_test_large(folio) || !folio_test_lru(folio))
return false;
mapping = (struct address_space *)
- ((unsigned long)page->mapping & ~PAGE_MAPPING_FLAGS);
+ ((unsigned long)folio->mapping & ~PAGE_MAPPING_FLAGS);
- if (!mapping || mapping != page->mapping)
+ if (!mapping || mapping != folio->mapping)
return false;
return mapping->a_ops == &secretmem_aops;
@@ -39,7 +38,7 @@ static inline bool vma_is_secretmem(struct vm_area_struct *vma)
return false;
}
-static inline bool page_is_secretmem(struct page *page)
+static inline bool folio_is_secretmem(struct folio *folio)
{
return false;
}