1 files changed, 5 insertions, 1 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 826b164a4b5b..3172c4e2f502 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -575,7 +575,11 @@ static const struct super_operations bdev_sops = {
 static struct dentry *bd_mount(struct file_system_type *fs_type,
         int flags, const char *dev_name, void *data)
 {
-        return mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC);
+        struct dentry *dent;
+        dent = mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC);
+        if (dent)
+                dent->d_sb->s_iflags |= SB_I_CGROUPWB;
+        return dent;
 }
 
 static struct file_system_type bd_type = {