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fs: add mount namespace to rbtree late

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There's no point doing that under the namespace semaphore it just gives
the false impression that it protects the mount namespace rbtree and it
simply doesn't.

Link: https://lore.kernel.org/r/20241213-work-mount-rbtree-lockless-v3-2-6e3cdaf9b280@kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2024-12-13 00:03:41 +01:00
parent 62b8dee925
commit 144acef333
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 1 additions and 1 deletions
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fs/namespace.c
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@ -3981,7 +3981,6 @@ struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
while (p->mnt.mnt_root != q->mnt.mnt_root)
p = next_mnt(skip_mnt_tree(p), old);
}
mnt_ns_tree_add(new_ns);
namespace_unlock();
if (rootmnt)
@ -3989,6 +3988,7 @@ struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
if (pwdmnt)
mntput(pwdmnt);
mnt_ns_tree_add(new_ns);
return new_ns;
}