Re: [PATCH v3] nfs: Fix automount superblock LSM init problem, preventing sb sharing

[David Howells]

Paul Moore <paul@xxxxxxxxxxxxxx> wrote:

> I guess my question is this: for inodes inside the superblock, does
> their superblock pointer point to the submount's superblock, or the
> parent filesystem's superblock?

They have to point to the submount superblock.  Too many things would break, I
think, if inode->i_sb pointed to the wrong place.  As far as the VFS is
concerned, apart from the way it is mounted, it's a perfectly normal
superblock.

David