[PATCH v5 03/23] filemap: Convert __filemap_fdatawait_range() to use filemap_get_folios_tag()

Vishal Moola (Oracle)
2023-01-04T21:17:08Z

Converted function to use folios. This is in preparation for the removal
of find_get_pages_range_tag(). This change removes 2 calls to
compound_head().

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Matthew Wilcow (Oracle) <willy@infradead.org>
---
mm/filemap.c | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 291bb3e0957a..85adbcf2d9a7 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -503,25 +503,27 @@ static void __filemap_fdatawait_range(struct address_space *mapping,
{
pgoff_t index = start_byte >> PAGE_SHIFT;
pgoff_t end = end_byte >> PAGE_SHIFT;
- struct pagevec pvec;
- int nr_pages;
+ struct folio_batch fbatch;
+ unsigned nr_folios;
+
+ folio_batch_init(&fbatch);

- pagevec_init(&pvec);
while (index <= end) {
unsigned i;

- nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
- end, PAGECACHE_TAG_WRITEBACK);
- if (!nr_pages)
+ nr_folios = filemap_get_folios_tag(mapping, &index, end,
+ PAGECACHE_TAG_WRITEBACK, &fbatch);
+
+ if (!nr_folios)
break;

- for (i = 0; i < nr_pages; i++) {
- struct page *page = pvec.pages[i];
+ for (i = 0; i < nr_folios; i++) {
+ struct folio *folio = fbatch.folios[i];

- wait_on_page_writeback(page);
- ClearPageError(page);
+ folio_wait_writeback(folio);
+ folio_clear_error(folio);