linux-kernel - [PATCH 2/2] mm/truncate: don't skip dirty page in folio_unmap

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Message-Id: <20250218120209.88093-3-jefflexu@linux.alibaba.com>
Date: Tue, 18 Feb 2025 20:02:09 +0800
From: Jingbo Xu <jefflexu@...ux.alibaba.com>
To: axboe@...nel.dk,
	linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org
Cc: brauner@...nel.org,
	linux-kernel@...r.kernel.org,
	viro@...iv.linux.org.uk
Subject: [PATCH 2/2] mm/truncate: don't skip dirty page in folio_unmap_invalidate()

... otherwise this is a behavior change for the previous callers of
invalidate_complete_folio2(), e.g. the page invalidation routine.

Fixes: 4a9e23159fd3 ("mm/truncate: add folio_unmap_invalidate() helper")
Signed-off-by: Jingbo Xu <jefflexu@...ux.alibaba.com>
---
 mm/truncate.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/truncate.c b/mm/truncate.c
index e2e115adfbc5..76d8fcd89bd0 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -548,8 +548,6 @@ int folio_unmap_invalidate(struct address_space *mapping, struct folio *folio,
 
 	VM_BUG_ON_FOLIO(!folio_test_locked(folio), folio);
 
-	if (folio_test_dirty(folio))
-		return 0;
 	if (folio_mapped(folio))
 		unmap_mapping_folio(folio);
 	BUG_ON(folio_mapped(folio));
-- 
2.19.1.6.gb485710b