linux-kernel - Re: [V9fs-developer] [GIT PULL] 9p file system bug fixes for 2.6.35-rc2

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Message-ID: <87bpas8j5y.fsf@linux.vnet.ibm.com>
Date:	Thu, 01 Jul 2010 00:03:29 +0530
From:	"Aneesh Kumar K. V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Latchesar Ionkov <lucho@...kov.net>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Eric Van Hensbergen <ericvh@...il.com>,
	V9FS Developers <v9fs-developer@...ts.sourceforge.net>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [V9fs-developer] [GIT PULL] 9p file system bug fixes for 2.6.35-rc2

On Wed, 30 Jun 2010 12:16:15 -0600, Latchesar Ionkov <lucho@...kov.net> wrote:
> I think that you need to use the s_vfs_rename_mutex in the super_block
> struct instead of introducing a new rename_lock in the v9fs session.
> 

I guess that will have lock dependency issue with inode->i_mutex. Also as Linus
suggested with dentry name copied we can avoid holding the lock when
doing 9P operation.
 
-aneesh
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