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Message-Id: <20220605193854.2371230-11-willy@infradead.org>
Date: Sun, 5 Jun 2022 20:38:54 +0100
From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
To: linux-fsdevel@...r.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>,
linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net, linux-mm@...ck.org,
linux-nilfs@...r.kernel.org
Subject: [PATCH 10/10] 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@...radead.org>
---
include/linux/pagemap.h | 3 --
include/linux/pagevec.h | 10 ------
mm/filemap.c | 67 -----------------------------------------
mm/swap.c | 29 ------------------
4 files changed, 109 deletions(-)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 50e57b2d845f..1caccb9f99aa 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -720,9 +720,6 @@ static inline struct page *find_subpage(struct page *head, pgoff_t index)
unsigned filemap_get_folios(struct address_space *mapping, pgoff_t *start,
pgoff_t end, struct folio_batch *fbatch);
-unsigned find_get_pages_range(struct address_space *mapping, pgoff_t *start,
- pgoff_t end, unsigned int nr_pages,
- struct page **pages);
unsigned find_get_pages_contig(struct address_space *mapping, pgoff_t start,
unsigned int nr_pages, struct page **pages);
unsigned find_get_pages_range_tag(struct address_space *mapping, pgoff_t *index,
diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h
index 67b1246f136b..6649154a2115 100644
--- a/include/linux/pagevec.h
+++ b/include/linux/pagevec.h
@@ -27,16 +27,6 @@ struct pagevec {
void __pagevec_release(struct pagevec *pvec);
void __pagevec_lru_add(struct pagevec *pvec);
-unsigned pagevec_lookup_range(struct pagevec *pvec,
- struct address_space *mapping,
- pgoff_t *start, pgoff_t end);
-static inline unsigned pagevec_lookup(struct pagevec *pvec,
- struct address_space *mapping,
- pgoff_t *start)
-{
- return pagevec_lookup_range(pvec, mapping, start, (pgoff_t)-1);
-}
-
unsigned pagevec_lookup_range_tag(struct pagevec *pvec,
struct address_space *mapping, pgoff_t *index, pgoff_t end,
xa_mark_t tag);
diff --git a/mm/filemap.c b/mm/filemap.c
index ea4145b7a84c..340ccb37f6b6 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2192,73 +2192,6 @@ bool folio_more_pages(struct folio *folio, pgoff_t index, pgoff_t max)
return index < folio->index + folio_nr_pages(folio) - 1;
}
-/**
- * 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
diff --git a/mm/swap.c b/mm/swap.c
index f3922a96b2e9..f65e284247b2 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -1086,35 +1086,6 @@ void folio_batch_remove_exceptionals(struct folio_batch *fbatch)
fbatch->nr = j;
}
-/**
- * pagevec_lookup_range - gang pagecache lookup
- * @pvec: Where the resulting pages are placed
- * @mapping: The address_space to search
- * @start: The starting page index
- * @end: The final page index
- *
- * pagevec_lookup_range() will search for & return a group of up to PAGEVEC_SIZE
- * pages in the mapping starting from index @start and upto index @end
- * (inclusive). The pages are placed in @pvec. pagevec_lookup() takes a
- * reference against the pages in @pvec.
- *
- * 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.
- *
- * pagevec_lookup_range() returns the number of pages which were found. If this
- * number is smaller than PAGEVEC_SIZE, the end of specified range has been
- * reached.
- */
-unsigned pagevec_lookup_range(struct pagevec *pvec,
- struct address_space *mapping, pgoff_t *start, pgoff_t end)
-{
- pvec->nr = find_get_pages_range(mapping, start, end, PAGEVEC_SIZE,
- pvec->pages);
- return pagevec_count(pvec);
-}
-EXPORT_SYMBOL(pagevec_lookup_range);
-
unsigned pagevec_lookup_range_tag(struct pagevec *pvec,
struct address_space *mapping, pgoff_t *index, pgoff_t end,
xa_mark_t tag)
--
2.35.1
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