ceph: avoid updating directory inode's i_size accidentally

[mirror_ubuntu-zesty-kernel.git] / fs / block_dev.c

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 826b164a4b5b1faa9719aefc9cceccec20eda479..3172c4e2f50255e1cb1fb426c1723a6b7b493bb2 100644 (file)
--- 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 = {