The patch titled
Subject: mm: remove page_swap_info()
has been added to the -mm mm-unstable branch. Its filename is
mm-remove-page_swap_info.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-page_swap_info.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm: remove page_swap_info()
Date: Wed, 13 Dec 2023 21:58:40 +0000
It's more efficient to get the swap_info_struct by calling
swp_swap_info() directly.
Link: https://lkml.kernel.org/r/20231213215842.671461-12-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/swap.h | 3 +--
mm/swap.h | 2 +-
mm/swapfile.c | 8 +-------
3 files changed, 3 insertions(+), 10 deletions(-)
--- a/include/linux/swap.h~mm-remove-page_swap_info
+++ a/include/linux/swap.h
@@ -487,8 +487,7 @@ extern sector_t swapdev_block(int, pgoff
extern int __swap_count(swp_entry_t entry);
extern int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry);
extern int swp_swapcount(swp_entry_t entry);
-extern struct swap_info_struct *page_swap_info(struct page *);
-extern struct swap_info_struct *swp_swap_info(swp_entry_t entry);
+struct swap_info_struct *swp_swap_info(swp_entry_t entry);
struct backing_dev_info;
extern int init_swap_address_space(unsigned int type, unsigned long nr_pages);
extern void exit_swap_address_space(unsigned int type);
--- a/mm/swapfile.c~mm-remove-page_swap_info
+++ a/mm/swapfile.c
@@ -3369,18 +3369,12 @@ struct swap_info_struct *swp_swap_info(s
return swap_type_to_swap_info(swp_type(entry));
}
-struct swap_info_struct *page_swap_info(struct page *page)
-{
- swp_entry_t entry = page_swap_entry(page);
- return swp_swap_info(entry);
-}
-
/*
* out-of-line methods to avoid include hell.
*/
struct address_space *swapcache_mapping(struct folio *folio)
{
- return page_swap_info(&folio->page)->swap_file->f_mapping;
+ return swp_swap_info(folio->swap)->swap_file->f_mapping;
}
EXPORT_SYMBOL_GPL(swapcache_mapping);
--- a/mm/swap.h~mm-remove-page_swap_info
+++ a/mm/swap.h
@@ -60,7 +60,7 @@ struct page *swapin_readahead(swp_entry_
static inline unsigned int folio_swap_flags(struct folio *folio)
{
- return page_swap_info(&folio->page)->flags;
+ return swp_swap_info(folio->swap)->flags;
}
#else /* CONFIG_SWAP */
struct swap_iocb;
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
buffer-return-bool-from-grow_dev_folio.patch
buffer-calculate-block-number-inside-folio_init_buffers.patch
buffer-fix-grow_buffers-for-block-size-page_size.patch
buffer-cast-block-to-loff_t-before-shifting-it.patch
buffer-fix-various-functions-for-block-size-page_size.patch
buffer-handle-large-folios-in-__block_write_begin_int.patch
buffer-fix-more-functions-for-block-size-page_size.patch
mm-convert-ksm_might_need_to_copy-to-work-on-folios.patch
mm-remove-pageanonexclusive-assertions-in-unuse_pte.patch
mm-convert-unuse_pte-to-use-a-folio-throughout.patch
mm-remove-some-calls-to-page_add_new_anon_rmap.patch
mm-remove-stale-example-from-comment.patch
mm-remove-references-to-page_add_new_anon_rmap-in-comments.patch
mm-convert-migrate_vma_insert_page-to-use-a-folio.patch
mm-convert-collapse_huge_page-to-use-a-folio.patch
mm-remove-page_add_new_anon_rmap-and-lru_cache_add_inactive_or_unevictable.patch
mm-return-the-folio-from-__read_swap_cache_async.patch
mm-pass-a-folio-to-__swap_writepage.patch
mm-pass-a-folio-to-swap_writepage_fs.patch
mm-pass-a-folio-to-swap_writepage_bdev_sync.patch
mm-pass-a-folio-to-swap_writepage_bdev_async.patch
mm-pass-a-folio-to-swap_readpage_fs.patch
mm-pass-a-folio-to-swap_readpage_bdev_sync.patch
mm-pass-a-folio-to-swap_readpage_bdev_async.patch
mm-convert-swap_page_sector-to-swap_folio_sector.patch
mm-convert-swap_readpage-to-swap_read_folio.patch
mm-remove-page_swap_info.patch
mm-return-a-folio-from-read_swap_cache_async.patch
mm-convert-swap_cluster_readahead-and-swap_vma_readahead-to-return-a-folio.patch
