vfs: make evict() use smp_mb__after_spinlock instead of smp_mb

It literally directly follows a spin_lock() call.

This whacks an explicit barrier on x86-64.

Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/r/20241113155103.4194099-1-mjguzik@gmail.com


Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>