linux-ext4 - Re: [PATCH] jbd/jbd2: remove obsolete summarise_journal

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Date:	Thu, 5 May 2011 19:25:04 +0200
From:	Jan Kara <jack@...e.cz>
To:	Niraj Kulkarni <kulkarniniraj14@...il.com>
Cc:	Jan Kara <jack@...e.cz>, Tao Ma <tm@....ma>,
	linux-ext4@...r.kernel.org
Subject: Re: [PATCH] jbd/jbd2: remove obsolete summarise_journal_usage.

  Hello,

On Thu 05-05-11 21:48:34, Niraj Kulkarni wrote:
>     I have a question, if only one instance of kjournald is active
> at any time, and committing transaction is well separated from
> others, what is need of taking j_list_lock while operating on
> committing transaction's lists?
  Other processes (e.g. journal_unmap_buffer()) can occasionally manipulate
with lists of the committing transaction.

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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