fs: add mount namespace to rbtree late

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>
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Christian Brauner 2024-12-13 00:03:41 +01:00
commit 144acef333
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