mm: remove putback_lru_page()

There are no more callers of putback_lru_page(), remove it.

Link: https://lkml.kernel.org/r/20240826065814.1336616-7-wangkefeng.wang@huawei.comSigned-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/folio-compat.c

@@ -92,8 +92,3 @@ struct page *grab_cache_page_write_begin(struct address_space *mapping,
 			mapping_gfp_mask(mapping));
 }
 EXPORT_SYMBOL(grab_cache_page_write_begin);
-
-void putback_lru_page(struct page *page)
-{
-	folio_putback_lru(page_folio(page));
-}

mm/internal.h

@@ -417,7 +417,6 @@ extern unsigned long highest_memmap_pfn;
  * in mm/vmscan.c:
  */
 bool folio_isolate_lru(struct folio *folio);
-void putback_lru_page(struct page *page);
 void folio_putback_lru(struct folio *folio);
 extern void reclaim_throttle(pg_data_t *pgdat, enum vmscan_throttle_state reason);