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Subject[PATCH] f2fs crypto: zero next free dnode block
Date
Now page cache of meta inode is used by garbage collection for encrypted page,
it may contain random data, so we should zero it before issuing discard.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
---
fs/f2fs/segment.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 16aa66e..bdf874a 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -504,7 +504,7 @@ void discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr)

if (err) {
struct page *page = grab_meta_page(sbi, blkaddr);
- /* zero-filled page */
+ memset(page_address(page), 0, F2FS_BLKSIZE);
set_page_dirty(page);
f2fs_put_page(page, 1);
}
--
2.3.3



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