[PATCH] f2fs: compress: don't compress any datas after cp stop

From: Chao Yu
Date: Mon May 25 2020 - 21:55:25 EST

While compressed data writeback, we need to drop dirty pages like we did
for non-compressed pages if cp stops, however it's not needed to compress
any data in such case, so let's detect cp stop condition in
cluster_may_compress() to avoid redundant compressing and let following
f2fs_write_raw_pages() drops dirty pages correctly.

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 bf152c0d79fe..a53578a89211 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -849,6 +849,8 @@ static bool cluster_may_compress(struct compress_ctx *cc)
return false;
if (!f2fs_cluster_is_full(cc))
return false;
+ if (unlikely(f2fs_cp_error(F2FS_I_SB(cc->inode))))
+ return false;
return __cluster_may_compress(cc);