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    SubjectRe: [PATCH 1/2] vfs: free vfsmount through rcu work from kern_unmount
    On Fri, Feb 18, 2022 at 01:31:13PM -0500, Rik van Riel wrote:

    > struct super_block;
    > struct vfsmount;
    > @@ -73,6 +74,7 @@ struct vfsmount {
    > struct super_block *mnt_sb; /* pointer to superblock */
    > int mnt_flags;
    > struct user_namespace *mnt_userns;
    > + struct rcu_work free_rwork;
    > } __randomize_layout;

    Wait, what? First of all, that has no business being in vfsmount -
    everything that deeply internal belongs in struct mount, not in
    its public part. Moreover, there's already mount->mnt_rcu, so what's
    the point duplicating that?

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