linux-kernel - [PATCH 11/23] mm: Use xas_erase() in page_cache_delete

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Message-Id: <20200422150256.23473-12-jack@suse.cz>
Date:   Wed, 22 Apr 2020 17:02:44 +0200
From:   Jan Kara <jack@...e.cz>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     <linux-fsdevel@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, Jan Kara <jack@...e.cz>
Subject: [PATCH 11/23] mm: Use xas_erase() in page_cache_delete_batch()

We need to clear marks when removing a page from xarray since there
could be DIRTY or TOWRITE tags left for the page. Use xas_erase() to
explicitely request mark clearing.

Signed-off-by: Jan Kara <jack@...e.cz>
---
 mm/filemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 23a051a7ef0f..48c488b505ad 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -333,7 +333,7 @@ static void page_cache_delete_batch(struct address_space *mapping,
 		 */
 		if (page->index + compound_nr(page) - 1 == xas.xa_index)
 			i++;
-		xas_store(&xas, NULL);
+		xas_erase(&xas);
 		total_pages++;
 	}
 	mapping->nrpages -= total_pages;
-- 
2.16.4