+ ufs-remove-writepage-implementation.patch added to mm-unstable branch

+ ufs-remove-writepage-implementation.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: ufs: remove writepage implementation
has been added to the -mm mm-unstable branch.  Its filename is
     ufs-remove-writepage-implementation.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/ufs-remove-writepage-implementation.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@infradead.org>
Subject: ufs: remove writepage implementation
Date: Fri, 15 Dec 2023 20:02:43 +0000

If the filesystem implements migrate_folio and writepages, there is no
need for a writepage implementation.

Link: https://lkml.kernel.org/r/20231215200245.748418-13-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ufs/inode.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

--- a/fs/ufs/inode.c~ufs-remove-writepage-implementation
+++ a/fs/ufs/inode.c
@@ -35,6 +35,7 @@
 #include <linux/string.h>
 #include <linux/mm.h>
 #include <linux/buffer_head.h>
+#include <linux/mpage.h>
 #include <linux/writeback.h>
 #include <linux/iversion.h>
 
@@ -390,7 +391,7 @@ out:
 
 /**
  * ufs_getfrag_block() - `get_block_t' function, interface between UFS and
- * read_folio, writepage and so on
+ * read_folio, writepages and so on
  */
 
 static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
@@ -467,9 +468,10 @@ done:
 	return 0;
 }
 
-static int ufs_writepage(struct page *page, struct writeback_control *wbc)
+static int ufs_writepages(struct address_space *mapping,
+		struct writeback_control *wbc)
 {
-	return block_write_full_page(page,ufs_getfrag_block,wbc);
+	return mpage_writepages(mapping, wbc, ufs_getfrag_block);
 }
 
 static int ufs_read_folio(struct file *file, struct folio *folio)
@@ -528,9 +530,10 @@ const struct address_space_operations uf
 	.dirty_folio = block_dirty_folio,
 	.invalidate_folio = block_invalidate_folio,
 	.read_folio = ufs_read_folio,
-	.writepage = ufs_writepage,
+	.writepages = ufs_writepages,
 	.write_begin = ufs_write_begin,
 	.write_end = ufs_write_end,
+	.migrate_folio = buffer_migrate_folio,
 	.bmap = ufs_bmap
 };
 
_

Patches currently in -mm which might be from willy@infradead.org are

mm-memory-failure-pass-the-folio-and-the-page-to-collect_procs.patch
mm-memory-failure-check-the-mapcount-of-the-precise-page.patch
mm-memory-failure-cast-index-to-loff_t-before-shifting-it.patch
mailmap-add-an-old-address-for-naoya-horiguchi.patch
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-convert-ksm_might_need_to_copy-to-work-on-folios-fix.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
fs-remove-clean_page_buffers.patch
fs-convert-clean_buffers-to-take-a-folio.patch
fs-reduce-stack-usage-in-__mpage_writepage.patch
fs-reduce-stack-usage-in-do_mpage_readpage.patch
adfs-remove-writepage-implementation.patch
bfs-remove-writepage-implementation.patch
hfs-really-remove-hfs_writepage.patch
hfsplus-really-remove-hfsplus_writepage.patch
minix-remove-writepage-implementation.patch
ocfs2-remove-writepage-implementation.patch
sysv-remove-writepage-implementation.patch
ufs-remove-writepage-implementation.patch
fs-convert-block_write_full_page-to-block_write_full_folio.patch
fs-remove-the-bh_end_io-argument-from-__block_write_full_folio.patch