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From: Nikita Danilov <Nikita@Namesys.COM>
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Date: Mon, 27 Jan 2003 18:04:04 +0300
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To: Linux Kernel Mailing List <Linux-Kernel@Vger.Kernel.ORG>
Cc: Andrew Morton <AKPM@Digeo.COM>, Alexander Viro <viro@math.psu.edu>
Subject: Re: possible deadlock in sys_pivot_root()?
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Nikita Danilov writes:
 > Hello,
 > 
 > sys_pivot_root() first takes BKL, then ->i_sem on the old root
 > directory. On the other hand, vfs_readdir() first takes ->i_sem on a
 > directory and then calls file system ->readdir() method, that usually
 > takes BKL. Isn't there a deadlock possibility? Of course,

Should think more before posting. Special treatment of BKL by scheduler
makes this impossible.

Nikita.