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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-10-19 19:33:31 +0100
committerAndrew Morton <akpm@linux-foundation.org>2022-11-08 17:37:18 -0800
commit524984ff66ee4b63264dffe568c3547a20b4136c (patch)
tree3a49ec8c2ede1958bb6dbd4a426b68cfe7f25e0e /mm
parentdd8095b15a6034165bc48da1eb6d0acc73c1558a (diff)
mm: convert find_get_incore_page() to filemap_get_incore_folio()
Return the containing folio instead of the precise page. One of the callers wants the folio and the other can do the folio->page conversion itself. Nets 442 bytes of text size reduction, 478 bytes removed and 36 bytes added. Link: https://lkml.kernel.org/r/20221019183332.2802139-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memcontrol.c12
-rw-r--r--mm/mincore.c10
-rw-r--r--mm/swap.h8
-rw-r--r--mm/swap_state.c15
4 files changed, 26 insertions, 19 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index f264a856ba86..fd707dcd6d04 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5648,15 +5648,21 @@ static struct page *mc_handle_swap_pte(struct vm_area_struct *vma,
static struct page *mc_handle_file_pte(struct vm_area_struct *vma,
unsigned long addr, pte_t ptent)
{
+ unsigned long index;
+ struct folio *folio;
+
if (!vma->vm_file) /* anonymous vma */
return NULL;
if (!(mc.flags & MOVE_FILE))
return NULL;
- /* page is moved even if it's not RSS of this task(page-faulted). */
+ /* folio is moved even if it's not RSS of this task(page-faulted). */
/* shmem/tmpfs may report page out on swap: account for that too. */
- return find_get_incore_page(vma->vm_file->f_mapping,
- linear_page_index(vma, addr));
+ index = linear_page_index(vma, addr);
+ folio = filemap_get_incore_folio(vma->vm_file->f_mapping, index);
+ if (!folio)
+ return NULL;
+ return folio_file_page(folio, index);
}
/**
diff --git a/mm/mincore.c b/mm/mincore.c
index e7e046fe17d7..a085a2aeabd8 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -52,7 +52,7 @@ static int mincore_hugetlb(pte_t *pte, unsigned long hmask, unsigned long addr,
static unsigned char mincore_page(struct address_space *mapping, pgoff_t index)
{
unsigned char present = 0;
- struct page *page;
+ struct folio *folio;
/*
* When tmpfs swaps out a page from a file, any process mapping that
@@ -60,10 +60,10 @@ static unsigned char mincore_page(struct address_space *mapping, pgoff_t index)
* any other file mapping (ie. marked !present and faulted in with
* tmpfs's .fault). So swapped out tmpfs mappings are tested here.
*/
- page = find_get_incore_page(mapping, index);
- if (page) {
- present = PageUptodate(page);
- put_page(page);
+ folio = filemap_get_incore_folio(mapping, index);
+ if (folio) {
+ present = folio_test_uptodate(folio);
+ folio_put(folio);
}
return present;
diff --git a/mm/swap.h b/mm/swap.h
index cc08c459c619..f78065c8ef52 100644
--- a/mm/swap.h
+++ b/mm/swap.h
@@ -41,7 +41,8 @@ void clear_shadow_from_swap_cache(int type, unsigned long begin,
unsigned long end);
struct folio *swap_cache_get_folio(swp_entry_t entry,
struct vm_area_struct *vma, unsigned long addr);
-struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index);
+struct folio *filemap_get_incore_folio(struct address_space *mapping,
+ pgoff_t index);
struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
struct vm_area_struct *vma,
@@ -105,9 +106,10 @@ static inline struct folio *swap_cache_get_folio(swp_entry_t entry,
}
static inline
-struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index)
+struct folio *filemap_get_incore_folio(struct address_space *mapping,
+ pgoff_t index)
{
- return find_get_page(mapping, index);
+ return filemap_get_folio(mapping, index);
}
static inline bool add_to_swap(struct folio *folio)
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 44e3530520e8..40fe6f23e105 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -373,16 +373,17 @@ struct folio *swap_cache_get_folio(swp_entry_t entry,
}
/**
- * find_get_incore_page - Find and get a page from the page or swap caches.
+ * filemap_get_incore_folio - Find and get a folio from the page or swap caches.
* @mapping: The address_space to search.
* @index: The page cache index.
*
- * This differs from find_get_page() in that it will also look for the
- * page in the swap cache.
+ * This differs from filemap_get_folio() in that it will also look for the
+ * folio in the swap cache.
*
- * Return: The found page or %NULL.
+ * Return: The found folio or %NULL.
*/
-struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index)
+struct folio *filemap_get_incore_folio(struct address_space *mapping,
+ pgoff_t index)
{
swp_entry_t swp;
struct swap_info_struct *si;
@@ -405,9 +406,7 @@ struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index)
folio = filemap_get_folio(swap_address_space(swp), index);
put_swap_device(si);
out:
- if (!folio)
- return NULL;
- return folio_file_page(folio, index);
+ return folio;
}
struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,