From 48658d8509d2db3391c95aa74308a2b1fc8e8461 Mon Sep 17 00:00:00 2001 From: "Vishal Moola (Oracle)" Date: Tue, 23 Aug 2022 17:40:23 -0700 Subject: filemap: remove find_get_pages_contig() All callers of find_get_pages_contig() have been removed, so it is no longer needed. Link: https://lkml.kernel.org/r/20220824004023.77310-8-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) Cc: Al Viro Cc: Chris Mason Cc: David Sterba Cc: David Sterba Cc: Josef Bacik Cc: Matthew Wilcox Cc: Ryusuke Konishi Signed-off-by: Andrew Morton --- mm/filemap.c | 60 ------------------------------------------------------------ 1 file changed, 60 deletions(-) (limited to 'mm/filemap.c') diff --git a/mm/filemap.c b/mm/filemap.c index 2a9441afe337..8151890e9a00 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2269,66 +2269,6 @@ out: } EXPORT_SYMBOL(filemap_get_folios_contig); -/** - * find_get_pages_contig - gang contiguous pagecache lookup - * @mapping: The address_space to search - * @index: The starting page index - * @nr_pages: The maximum number of pages - * @pages: Where the resulting pages are placed - * - * find_get_pages_contig() works exactly like find_get_pages_range(), - * except that the returned number of pages are guaranteed to be - * contiguous. - * - * Return: the number of pages which were found. - */ -unsigned find_get_pages_contig(struct address_space *mapping, pgoff_t index, - unsigned int nr_pages, struct page **pages) -{ - XA_STATE(xas, &mapping->i_pages, index); - struct folio *folio; - unsigned int ret = 0; - - if (unlikely(!nr_pages)) - return 0; - - rcu_read_lock(); - for (folio = xas_load(&xas); folio; folio = xas_next(&xas)) { - if (xas_retry(&xas, folio)) - continue; - /* - * If the entry has been swapped out, we can stop looking. - * No current caller is looking for DAX entries. - */ - if (xa_is_value(folio)) - break; - - if (!folio_try_get_rcu(folio)) - goto retry; - - if (unlikely(folio != xas_reload(&xas))) - goto put_page; - -again: - pages[ret] = folio_file_page(folio, xas.xa_index); - if (++ret == nr_pages) - break; - if (folio_more_pages(folio, xas.xa_index, ULONG_MAX)) { - xas.xa_index++; - folio_ref_inc(folio); - goto again; - } - continue; -put_page: - folio_put(folio); -retry: - xas_reset(&xas); - } - rcu_read_unlock(); - return ret; -} -EXPORT_SYMBOL(find_get_pages_contig); - /** * find_get_pages_range_tag - Find and return head pages matching @tag. * @mapping: the address_space to search -- cgit v1.2.3-59-g8ed1b