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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-06-04 17:46:02 -0400
committerMatthew Wilcox (Oracle) <willy@infradead.org>2022-06-29 08:51:06 -0400
commitbb4b42ba926224e26ed699e51def164b4b163935 (patch)
tree4ba13b5ce062e7fb027a1d72c7383a330a5dcf27 /mm/filemap.c
parent105c988f5dd76397616e0392ea85d45225397191 (diff)
filemap: Remove find_get_pages_range() and associated functions
All callers of find_get_pages_range(), pagevec_lookup_range() and pagevec_lookup() have now been removed. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c67
1 files changed, 0 insertions, 67 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index ce3209a8ad49..15399e8cd281 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2197,73 +2197,6 @@ bool folio_more_pages(struct folio *folio, pgoff_t index, pgoff_t max)
}
/**
- * find_get_pages_range - gang pagecache lookup
- * @mapping: The address_space to search
- * @start: The starting page index
- * @end: The final page index (inclusive)
- * @nr_pages: The maximum number of pages
- * @pages: Where the resulting pages are placed
- *
- * find_get_pages_range() will search for and return a group of up to @nr_pages
- * pages in the mapping starting at index @start and up to index @end
- * (inclusive). The pages are placed at @pages. find_get_pages_range() takes
- * a reference against the returned pages.
- *
- * The search returns a group of mapping-contiguous pages with ascending
- * indexes. There may be holes in the indices due to not-present pages.
- * We also update @start to index the next page for the traversal.
- *
- * Return: the number of pages which were found. If this number is
- * smaller than @nr_pages, the end of specified range has been
- * reached.
- */
-unsigned find_get_pages_range(struct address_space *mapping, pgoff_t *start,
- pgoff_t end, unsigned int nr_pages,
- struct page **pages)
-{
- XA_STATE(xas, &mapping->i_pages, *start);
- struct folio *folio;
- unsigned ret = 0;
-
- if (unlikely(!nr_pages))
- return 0;
-
- rcu_read_lock();
- while ((folio = find_get_entry(&xas, end, XA_PRESENT))) {
- /* Skip over shadow, swap and DAX entries */
- if (xa_is_value(folio))
- continue;
-
-again:
- pages[ret] = folio_file_page(folio, xas.xa_index);
- if (++ret == nr_pages) {
- *start = xas.xa_index + 1;
- goto out;
- }
- if (folio_more_pages(folio, xas.xa_index, end)) {
- xas.xa_index++;
- folio_ref_inc(folio);
- goto again;
- }
- }
-
- /*
- * We come here when there is no page beyond @end. We take care to not
- * overflow the index @start as it confuses some of the callers. This
- * breaks the iteration when there is a page at index -1 but that is
- * already broken anyway.
- */
- if (end == (pgoff_t)-1)
- *start = (pgoff_t)-1;
- else
- *start = end + 1;
-out:
- rcu_read_unlock();
-
- return ret;
-}
-
-/**
* find_get_pages_contig - gang contiguous pagecache lookup
* @mapping: The address_space to search
* @index: The starting page index