[RFC PATCH V6 1/7] ovl: setup overlayfs' private bdi

[Chengguang Xu]

From: Chengguang Xu <charliecgxu@xxxxxxxxxxx>

Setup overlayfs' private bdi so that we can collect
overlayfs' own dirty inodes.

Signed-off-by: Chengguang Xu <charliecgxu@xxxxxxxxxxx>
---
 fs/overlayfs/super.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 265181c110ae..18a12088a37b 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -1984,6 +1984,10 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
 	if (!ofs)
 		goto out;
 
+	err = super_setup_bdi(sb);
+	if (err)
+		goto out_err;
+
 	err = -ENOMEM;
 	ofs->creator_cred = cred = prepare_creds();
 	if (!cred)
-- 
2.27.0