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* [PATCH 1/4] f2fs: fix to clear private data in page
@ 2016-04-28 15:13 Chao Yu
  2016-04-28 23:29 ` Jaegeuk Kim
  0 siblings, 1 reply; 4+ messages in thread
From: Chao Yu @ 2016-04-28 15:13 UTC (permalink / raw)
  To: Jaegeuk Kim; +Cc: linux-f2fs-devel, linux-kernel

From: Chao Yu <yuchao0@huawei.com>

Private data in page should be removed during ->releasepage or
->invalidatepage, otherwise garbage data would be remained in that page.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
 fs/f2fs/data.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 38ce5d6..888f178 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1723,6 +1723,7 @@ void f2fs_invalidate_page(struct page *page, unsigned int
offset,
 	if (IS_ATOMIC_WRITTEN_PAGE(page))
 		return;

+	set_page_private(page, 0);
 	ClearPagePrivate(page);
 }

@@ -1736,6 +1737,7 @@ int f2fs_release_page(struct page *page, gfp_t wait)
 	if (IS_ATOMIC_WRITTEN_PAGE(page))
 		return 0;

+	set_page_private(page, 0);
 	ClearPagePrivate(page);
 	return 1;
 }
-- 
2.7.2

^ permalink raw reply related	[flat|nested] 4+ messages in thread
* [PATCH 1/4] f2fs: fix to clear private data in page
@ 2016-04-29 12:09 Chao Yu
  0 siblings, 0 replies; 4+ messages in thread
From: Chao Yu @ 2016-04-29 12:09 UTC (permalink / raw)
  To: jaegeuk; +Cc: linux-f2fs-devel, linux-kernel, Chao Yu

From: Chao Yu <yuchao0@huawei.com>

Private data in page should be removed during ->releasepage or
->invalidatepage, otherwise garbage data would be remained in that page.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
 fs/f2fs/data.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 38ce5d6..888f178 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1723,6 +1723,7 @@ void f2fs_invalidate_page(struct page *page, unsigned int offset,
 	if (IS_ATOMIC_WRITTEN_PAGE(page))
 		return;
 
+	set_page_private(page, 0);
 	ClearPagePrivate(page);
 }
 
@@ -1736,6 +1737,7 @@ int f2fs_release_page(struct page *page, gfp_t wait)
 	if (IS_ATOMIC_WRITTEN_PAGE(page))
 		return 0;
 
+	set_page_private(page, 0);
 	ClearPagePrivate(page);
 	return 1;
 }
-- 
2.7.2

^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2016-04-29 12:11 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2016-04-28 15:13 [PATCH 1/4] f2fs: fix to clear private data in page Chao Yu
2016-04-28 23:29 ` Jaegeuk Kim
2016-04-29 11:19   ` Chao Yu
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2016-04-29 12:09 Chao Yu

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