+ nilfs2-convert-to-nilfs_folio_buffers_clean.patch added to mm-nonmm-unstable branch

+ nilfs2-convert-to-nilfs_folio_buffers_clean.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: nilfs2: convert to nilfs_folio_buffers_clean()
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     nilfs2-convert-to-nilfs_folio_buffers_clean.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/nilfs2-convert-to-nilfs_folio_buffers_clean.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: nilfs2: convert to nilfs_folio_buffers_clean()
Date: Tue, 14 Nov 2023 17:44:21 +0900

All callers of nilfs_page_buffers_clean() now have a folio, so convert it
to take a folio.  While I'm at it, make it return a bool.

Link: https://lkml.kernel.org/r/20231114084436.2755-6-konishi.ryusuke@gmail.com
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/nilfs2/page.c    |   18 +++++++++---------
 fs/nilfs2/page.h    |    2 +-
 fs/nilfs2/segment.c |    4 ++--
 3 files changed, 12 insertions(+), 12 deletions(-)

--- a/fs/nilfs2/page.c~nilfs2-convert-to-nilfs_folio_buffers_clean
+++ a/fs/nilfs2/page.c
@@ -81,7 +81,7 @@ void nilfs_forget_buffer(struct buffer_h
 
 	lock_buffer(bh);
 	set_mask_bits(&bh->b_state, clear_bits, 0);
-	if (nilfs_page_buffers_clean(&folio->page))
+	if (nilfs_folio_buffers_clean(folio))
 		__nilfs_clear_page_dirty(&folio->page);
 
 	bh->b_blocknr = -1;
@@ -131,23 +131,23 @@ void nilfs_copy_buffer(struct buffer_hea
 }
 
 /**
- * nilfs_page_buffers_clean - check if a page has dirty buffers or not.
- * @page: page to be checked
+ * nilfs_folio_buffers_clean - Check if a folio has dirty buffers or not.
+ * @folio: Folio to be checked.
  *
- * nilfs_page_buffers_clean() returns zero if the page has dirty buffers.
- * Otherwise, it returns non-zero value.
+ * nilfs_folio_buffers_clean() returns false if the folio has dirty buffers.
+ * Otherwise, it returns true.
  */
-int nilfs_page_buffers_clean(struct page *page)
+bool nilfs_folio_buffers_clean(struct folio *folio)
 {
 	struct buffer_head *bh, *head;
 
-	bh = head = page_buffers(page);
+	bh = head = folio_buffers(folio);
 	do {
 		if (buffer_dirty(bh))
-			return 0;
+			return false;
 		bh = bh->b_this_page;
 	} while (bh != head);
-	return 1;
+	return true;
 }
 
 void nilfs_page_bug(struct page *page)
--- a/fs/nilfs2/page.h~nilfs2-convert-to-nilfs_folio_buffers_clean
+++ a/fs/nilfs2/page.h
@@ -36,7 +36,7 @@ struct buffer_head *nilfs_grab_buffer(st
 				      unsigned long, unsigned long);
 void nilfs_forget_buffer(struct buffer_head *);
 void nilfs_copy_buffer(struct buffer_head *, struct buffer_head *);
-int nilfs_page_buffers_clean(struct page *);
+bool nilfs_folio_buffers_clean(struct folio *);
 void nilfs_page_bug(struct page *);
 
 int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
--- a/fs/nilfs2/segment.c~nilfs2-convert-to-nilfs_folio_buffers_clean
+++ a/fs/nilfs2/segment.c
@@ -1759,7 +1759,7 @@ static void nilfs_end_folio_io(struct fo
 			 * all the buffers get cleaned later.
 			 */
 			folio_lock(folio);
-			if (nilfs_page_buffers_clean(&folio->page))
+			if (nilfs_folio_buffers_clean(folio))
 				__nilfs_clear_page_dirty(&folio->page);
 			folio_unlock(folio);
 		}
@@ -1767,7 +1767,7 @@ static void nilfs_end_folio_io(struct fo
 	}
 
 	if (!err) {
-		if (!nilfs_page_buffers_clean(&folio->page))
+		if (!nilfs_folio_buffers_clean(folio))
 			filemap_dirty_folio(folio->mapping, folio);
 		folio_clear_error(folio);
 	} else {
_

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

mm-add-folio_zero_tail-and-use-it-in-ext4.patch
mm-add-folio_fill_tail-and-use-it-in-iomap.patch
gfs2-convert-stuffed_readpage-to-stuffed_read_folio.patch
mm-remove-test_set_page_writeback.patch
afs-do-not-test-the-return-value-of-folio_start_writeback.patch
smb-do-not-test-the-return-value-of-folio_start_writeback.patch
mm-return-void-from-folio_start_writeback-and-related-functions.patch
mm-make-mapping_evict_folio-the-preferred-way-to-evict-clean-folios.patch
mm-convert-__do_fault-to-use-a-folio.patch
mm-use-mapping_evict_folio-in-truncate_error_page.patch
mm-convert-soft_offline_in_use_page-to-use-a-folio.patch
mm-convert-isolate_page-to-mf_isolate_folio.patch
mm-remove-invalidate_inode_page.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
gfp-include-__gfp_nowarn-in-gfp_nowait.patch
nilfs2-add-nilfs_end_folio_io.patch
nilfs2-convert-nilfs_abort_logs-to-use-folios.patch
nilfs2-convert-nilfs_segctor_complete_write-to-use-folios.patch
nilfs2-convert-nilfs_forget_buffer-to-use-a-folio.patch
nilfs2-convert-to-nilfs_folio_buffers_clean.patch
nilfs2-convert-nilfs_writepage-to-use-a-folio.patch
nilfs2-convert-nilfs_mdt_write_page-to-use-a-folio.patch
nilfs2-convert-to-nilfs_clear_folio_dirty.patch
nilfs2-convert-to-__nilfs_clear_folio_dirty.patch
nilfs2-convert-nilfs_segctor_prepare_write-to-use-folios.patch
nilfs2-convert-nilfs_page_mkwrite-to-use-a-folio.patch
nilfs2-convert-nilfs_mdt_create_block-to-use-a-folio.patch
nilfs2-convert-nilfs_mdt_submit_block-to-use-a-folio.patch
nilfs2-convert-nilfs_gccache_submit_read_data-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_create_block-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_submit_block-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_delete-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_prepare_change_key-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_commit_change_key-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_abort_change_key-to-use-a-folio.patch