[PATCH 3/3] f2fs: compress: fix to assign cc.cluster_idx correctly

[Chao Yu]

In f2fs_destroy_compress_ctx(), after f2fs_destroy_compress_ctx(),
cc.cluster_idx will be cleared w/ NULL_CLUSTER, f2fs_cluster_blocks()
may check wrong cluster metadata, fix it.

Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
 fs/f2fs/compress.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 340815cd0887..30b003447510 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1066,6 +1066,8 @@ static int prepare_compress_overwrite(struct compress_ctx *cc,
 			f2fs_put_rpages(cc);
 			f2fs_unlock_rpages(cc, i + 1);
 			f2fs_destroy_compress_ctx(cc);
+			cc->cluster_idx = index >>
+					F2FS_I(cc->inode)->i_log_cluster_size;
 			goto retry;
 		}
 	}
-- 
2.29.2