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SubjectLocking problem in autofs4_expire(), 2.4.0-test10
dput() is called with dcache_lock already held, resulting in deadlock.

Here is a suggested fix:

===== expire.c 1.3 vs edited =====
--- 1.3/linux/fs/autofs4/expire.c Tue Oct 31 15:14:06 2000
+++ edited/expire.c Fri Nov 3 17:47:47 2000
@@ -223,8 +223,10 @@
mntput(p);
return dentry;
}
+ spin_unlock(&dcache_lock);
dput(d);
mntput(p);
+ spin_lock(&dcache_lock);
}
spin_unlock(&dcache_lock);

Nigel Gamble
MontaVista Software
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