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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-10-19 21:33:30 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-11-09 04:37:18 +0300
commitdd8095b15a6034165bc48da1eb6d0acc73c1558a (patch)
tree4ada6b2c0c8256221b88eb39024182e86a38a3b9 /mm/swap_state.c
parent9ee2c086271639d82ad8f6e96b91fa7991800c0a (diff)
downloadlinux-dd8095b15a6034165bc48da1eb6d0acc73c1558a.tar.xz
mm/swap: convert find_get_incore_page to use folios
Eliminates a use of FGP_HEAD and saves 35 bytes of text. Link: https://lkml.kernel.org/r/20221019183332.2802139-3-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/swap_state.c')
-rw-r--r--mm/swap_state.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 438d0676c5be..44e3530520e8 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -386,17 +386,14 @@ struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index)
{
swp_entry_t swp;
struct swap_info_struct *si;
- struct page *page = pagecache_get_page(mapping, index,
- FGP_ENTRY | FGP_HEAD, 0);
+ struct folio *folio = __filemap_get_folio(mapping, index, FGP_ENTRY, 0);
- if (!page)
- return page;
- if (!xa_is_value(page))
- return find_subpage(page, index);
+ if (!xa_is_value(folio))
+ goto out;
if (!shmem_mapping(mapping))
return NULL;
- swp = radix_to_swp_entry(page);
+ swp = radix_to_swp_entry(folio);
/* There might be swapin error entries in shmem mapping. */
if (non_swap_entry(swp))
return NULL;
@@ -404,9 +401,13 @@ struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index)
si = get_swap_device(swp);
if (!si)
return NULL;
- page = find_get_page(swap_address_space(swp), swp_offset(swp));
+ index = swp_offset(swp);
+ folio = filemap_get_folio(swap_address_space(swp), index);
put_swap_device(si);
- return page;
+out:
+ if (!folio)
+ return NULL;
+ return folio_file_page(folio, index);
}
struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,