Merge tag 'folio-5.18b' of git://git.infradead.org/users/willy/pagecache

Pull filesystem folio updates from Matthew Wilcox:
 "Primarily this series converts some of the address_space operations to
  take a folio instead of a page.

  Notably:

   - a_ops->is_partially_uptodate() takes a folio instead of a page and
     changes the type of the 'from' and 'count' arguments to make it
     obvious they're bytes.

   - a_ops->invalidatepage() becomes ->invalidate_folio() and has a
     similar type change.

   - a_ops->launder_page() becomes ->launder_folio()

   - a_ops->set_page_dirty() becomes ->dirty_folio() and adds the
     address_space as an argument.

  There are a couple of other misc changes up front that weren't worth
  separating into their own pull request"

* tag 'folio-5.18b' of git://git.infradead.org/users/willy/pagecache: (53 commits)
  fs: Remove aops ->set_page_dirty
  fb_defio: Use noop_dirty_folio()
  fs: Convert __set_page_dirty_no_writeback to noop_dirty_folio
  fs: Convert __set_page_dirty_buffers to block_dirty_folio
  nilfs: Convert nilfs_set_page_dirty() to nilfs_dirty_folio()
  mm: Convert swap_set_page_dirty() to swap_dirty_folio()
  ubifs: Convert ubifs_set_page_dirty to ubifs_dirty_folio
  f2fs: Convert f2fs_set_node_page_dirty to f2fs_dirty_node_folio
  f2fs: Convert f2fs_set_data_page_dirty to f2fs_dirty_data_folio
  f2fs: Convert f2fs_set_meta_page_dirty to f2fs_dirty_meta_folio
  afs: Convert afs_dir_set_page_dirty() to afs_dir_dirty_folio()
  btrfs: Convert extent_range_redirty_for_io() to use folios
  fs: Convert trivial uses of __set_page_dirty_nobuffers to filemap_dirty_folio
  btrfs: Convert from set_page_dirty to dirty_folio
  fscache: Convert fscache_set_page_dirty() to fscache_dirty_folio()
  fs: Add aops->dirty_folio
  fs: Remove aops->launder_page
  orangefs: Convert launder_page to launder_folio
  nfs: Convert from launder_page to launder_folio
  fuse: Convert from launder_page to launder_folio
  ...

2 files changed, 16 insertions, 17 deletions

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index c2cf74b01ddb..fcacafa4510d 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -86,7 +86,7 @@ EXPORT_SYMBOL(jbd2_journal_start_commit);
 EXPORT_SYMBOL(jbd2_journal_force_commit_nested);
 EXPORT_SYMBOL(jbd2_journal_wipe);
 EXPORT_SYMBOL(jbd2_journal_blocks_per_page);
-EXPORT_SYMBOL(jbd2_journal_invalidatepage);
+EXPORT_SYMBOL(jbd2_journal_invalidate_folio);
 EXPORT_SYMBOL(jbd2_journal_try_to_free_buffers);
 EXPORT_SYMBOL(jbd2_journal_force_commit);
 EXPORT_SYMBOL(jbd2_journal_inode_ranged_write);
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 73ed02f061e1..fcb9175016a5 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -2217,14 +2217,14 @@ static int __dispose_buffer(struct journal_head *jh, transaction_t *transaction)
 }
 
 /*
- * jbd2_journal_invalidatepage
+ * jbd2_journal_invalidate_folio
  *
  * This code is tricky.  It has a number of cases to deal with.
  *
  * There are two invariants which this code relies on:
  *
- * i_size must be updated on disk before we start calling invalidatepage on the
- * data.
+ * i_size must be updated on disk before we start calling invalidate_folio
+ * on the data.
  *
  *  This is done in ext3 by defining an ext3_setattr method which
  *  updates i_size before truncate gets going.  By maintaining this
@@ -2426,9 +2426,9 @@ zap_buffer_unlocked:
 }
 
 /**
- * jbd2_journal_invalidatepage()
+ * jbd2_journal_invalidate_folio()
  * @journal: journal to use for flush...
- * @page:    page to flush
+ * @folio:    folio to flush
  * @offset:  start of the range to invalidate
  * @length:  length of the range to invalidate
  *
@@ -2437,30 +2437,29 @@ zap_buffer_unlocked:
  * the page is straddling i_size. Caller then has to wait for current commit
  * and try again.
  */
-int jbd2_journal_invalidatepage(journal_t *journal,
-				struct page *page,
-				unsigned int offset,
-				unsigned int length)
+int jbd2_journal_invalidate_folio(journal_t *journal, struct folio *folio,
+				size_t offset, size_t length)
 {
 	struct buffer_head *head, *bh, *next;
 	unsigned int stop = offset + length;
 	unsigned int curr_off = 0;
-	int partial_page = (offset || length < PAGE_SIZE);
+	int partial_page = (offset || length < folio_size(folio));
 	int may_free = 1;
 	int ret = 0;
 
-	if (!PageLocked(page))
+	if (!folio_test_locked(folio))
 		BUG();
-	if (!page_has_buffers(page))
+	head = folio_buffers(folio);
+	if (!head)
 		return 0;
 
-	BUG_ON(stop > PAGE_SIZE || stop < length);
+	BUG_ON(stop > folio_size(folio) || stop < length);
 
 	/* We will potentially be playing with lists other than just the
 	 * data lists (especially for journaled data mode), so be
 	 * cautious in our locking. */
 
-	head = bh = page_buffers(page);
+	bh = head;
 	do {
 		unsigned int next_off = curr_off + bh->b_size;
 		next = bh->b_this_page;
@@ -2483,8 +2482,8 @@ int jbd2_journal_invalidatepage(journal_t *journal,
 	} while (bh != head);
 
 	if (!partial_page) {
-		if (may_free && try_to_free_buffers(page))
-			J_ASSERT(!page_has_buffers(page));
+		if (may_free && try_to_free_buffers(&folio->page))
+			J_ASSERT(!folio_buffers(folio));
 	}
 	return 0;
 }