From: "J. R. Okajima" <hooanon05g@gmail.com>
To: viro@zeniv.linux.org.uk
Cc: linux-fsdevel@vger.kernel.org
Subject: Q: spin_unlock(dentry) after lock_parent(dentry)
Date: Tue, 03 Jun 2014 23:36:55 +0900 [thread overview]
Message-ID: <23341.1401806215@jrobl> (raw)
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
next reply other threads:[~2014-06-03 14:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-03 14:36 J. R. Okajima [this message]
2014-06-03 23:17 ` Q: spin_unlock(dentry) after lock_parent(dentry) Al Viro
2014-06-04 17:03 ` J. R. Okajima
2014-06-07 13:51 ` J. R. Okajima
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