[PATCH 3/3] mm: remove write_cache_pages

[Christoph Hellwig <hch@lst.de>]

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Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/writeback.h |  6 ------
 mm/page-writeback.c       | 30 ------------------------------
 2 files changed, 36 deletions(-)

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index a2848d731a46..2a7e134d03ee 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -360,12 +360,6 @@ bool wb_over_bg_thresh(struct bdi_writeback *wb);
 struct folio *writeback_iter(struct address_space *mapping,
 		struct writeback_control *wbc, struct folio *folio, int *error);
 
-typedef int (*writepage_t)(struct folio *folio, struct writeback_control *wbc,
-				void *data);
-
-int write_cache_pages(struct address_space *mapping,
-		      struct writeback_control *wbc, writepage_t writepage,
-		      void *data);
 int do_writepages(struct address_space *mapping, struct writeback_control *wbc);
 void writeback_set_ratelimit(void);
 void tag_pages_for_writeback(struct address_space *mapping,
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 3e248d1c3969..7e1e798e7213 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2590,36 +2590,6 @@ struct folio *writeback_iter(struct address_space *mapping,
 }
 EXPORT_SYMBOL_GPL(writeback_iter);
 
-/**
- * write_cache_pages - walk the list of dirty pages of the given address space and write all of them.
- * @mapping: address space structure to write
- * @wbc: subtract the number of written pages from *@wbc->nr_to_write
- * @writepage: function called for each page
- * @data: data passed to writepage function
- *
- * Return: %0 on success, negative error code otherwise
- *
- * Note: please use writeback_iter() instead.
- */
-int write_cache_pages(struct address_space *mapping,
-		      struct writeback_control *wbc, writepage_t writepage,
-		      void *data)
-{
-	struct folio *folio = NULL;
-	int error;
-
-	while ((folio = writeback_iter(mapping, wbc, folio, &error))) {
-		error = writepage(folio, wbc, data);
-		if (error == AOP_WRITEPAGE_ACTIVATE) {
-			folio_unlock(folio);
-			error = 0;
-		}
-	}
-
-	return error;
-}
-EXPORT_SYMBOL(write_cache_pages);
-
 int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
 {
 	int ret;
-- 
2.47.2