[PATCH 9/9] udf: remove ->writepage

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->writepage is a very inefficient method to write back data, and only
used through write_cache_pages or a a fallback when no ->migrate_folio
method is present.

Set ->migrate_folio to the generic buffer_head based helper, and remove
the ->writepage implementation in extfat.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 fs/udf/inode.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index dce6ae9ae306c..0246b1b86fb91 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -182,11 +182,6 @@ static void udf_write_failed(struct address_space *mapping, loff_t to)
 	}
 }
 
-static int udf_writepage(struct page *page, struct writeback_control *wbc)
-{
-	return block_write_full_page(page, udf_get_block, wbc);
-}
-
 static int udf_writepages(struct address_space *mapping,
 			struct writeback_control *wbc)
 {
@@ -239,12 +234,12 @@ const struct address_space_operations udf_aops = {
 	.invalidate_folio = block_invalidate_folio,
 	.read_folio	= udf_read_folio,
 	.readahead	= udf_readahead,
-	.writepage	= udf_writepage,
 	.writepages	= udf_writepages,
 	.write_begin	= udf_write_begin,
 	.write_end	= generic_write_end,
 	.direct_IO	= udf_direct_IO,
 	.bmap		= udf_bmap,
+	.migrate_folio	= buffer_migrate_folio,
 };
 
 /*
-- 
2.30.2




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