Q: spin_unlock(dentry) after lock_parent(dentry)

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Hello Al Viro,

I have a question about spin_unlock(dentry) after lock_parent(dentry).
In lock_parent(dentry), spin_unlock(dentry) is called. And
spin_lock(dentry) is called again when (parent != dentry) is
true. Otherwise, dentry left spin_unlock-ed and lock_parent() returns
NULL.

Even in the case of lock_parent() returns NULL, shrink_dentry_list()
calls spin_unlock(dentry). Is it balanced and correct?


J. R. Okajima
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