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From: Arnd Bergmann <arnd@arndb.de>
To: Alessio Igor Bogani <abogani@texware.it>
Cc: "Greg Kroah-Hartman" <gregkh@suse.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	Al Viro <viro@zeniv.linux.org.uk>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jan Blunck <jblunck@suse.de>
Subject: Re: [PATCH] USB: Remove BKL from remount() function in usbfs
Date: Wed, 31 Mar 2010 15:54:37 +0100	[thread overview]
Message-ID: <201003311654.38020.arnd@arndb.de> (raw)
In-Reply-To: <1270044578-4291-1-git-send-email-abogani@texware.it>

On Wednesday 31 March 2010, Alessio Igor Bogani wrote:
> 
> The BKL was used into remount_fs pointed function for serialized access to
> super_block from the others super_operations functions.
> 
> The function update_sb(), invoked by remount(), seems already well serialized
> with &root->d_inode->i_mutex. Moreover don't seems there are others
> super_operations functions in USB core for usbfs that should access to
> super_block in a way which require BKL.

There is a patch from Jan Blunck pending in the bkl-removal tree that pushes
down the BKL into usbfs_fill_super. Can you confirm that this BKL usage does
not interfere with the one you just removed, and that it can go the same way?

	Arnd

  reply	other threads:[~2010-03-31 14:55 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-31 14:09 [PATCH] USB: Remove BKL from remount() function in usbfs Alessio Igor Bogani
2010-03-31 14:54 ` Arnd Bergmann [this message]
2010-03-31 17:21   ` Alessio Igor Bogani

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