f2fs: avoid wrong decrypted data from disk
1. Create a file in an encrypted directory
2. Do GC & drop caches
3. Read stale data before its bio for metapage was not issued yet
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 7ffa06c..6cbf6e7 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3196,10 +3196,14 @@
}
}
-void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr)
+void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr)
{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct page *cpage;
+ if (!f2fs_post_read_required(inode))
+ return;
+
if (!is_valid_data_blkaddr(sbi, blkaddr))
return;