linux-kernel - [PATCH] filemap: Convert filemap_range_has

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Date:   Mon,  5 Sep 2022 14:45:57 -0700
From:   "Vishal Moola (Oracle)" <vishal.moola@...il.com>
To:     linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        akpm@...ux-foundation.org, willy@...radead.org,
        "Vishal Moola (Oracle)" <vishal.moola@...il.com>
Subject: [PATCH] filemap: Convert filemap_range_has_writeback() to use folios

Removes 3 calls to compound_head().

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@...il.com>
---
 mm/filemap.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 15800334147b..a4c71b90491c 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -632,22 +632,23 @@ bool filemap_range_has_writeback(struct address_space *mapping,
 {
 	XA_STATE(xas, &mapping->i_pages, start_byte >> PAGE_SHIFT);
 	pgoff_t max = end_byte >> PAGE_SHIFT;
-	struct page *page;
+	struct folio *folio;
 
 	if (end_byte < start_byte)
 		return false;
 
 	rcu_read_lock();
-	xas_for_each(&xas, page, max) {
-		if (xas_retry(&xas, page))
+	xas_for_each(&xas, folio, max) {
+		if (xas_retry(&xas, folio))
 			continue;
-		if (xa_is_value(page))
+		if (xa_is_value(folio))
 			continue;
-		if (PageDirty(page) || PageLocked(page) || PageWriteback(page))
+		if (folio_test_dirty(folio) || folio_test_locked(folio) ||
+				folio_test_writeback(folio))
 			break;
 	}
 	rcu_read_unlock();
-	return page != NULL;
+	return folio != NULL;
 }
 EXPORT_SYMBOL_GPL(filemap_range_has_writeback);
 
-- 
2.36.1