From: Christoph Hellwig <hch@infradead.org>
To: Jan Kara <jack@suse.cz>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
Christoph Hellwig <hch@infradead.org>,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 1/7] writeback: Move clearing of I_SYNC into inode_sync_complete()
Date: Mon, 30 Apr 2012 10:36:41 -0400 [thread overview]
Message-ID: <20120430143641.GA10964@infradead.org> (raw)
In-Reply-To: <1332284191-21076-2-git-send-email-jack@suse.cz>
On Tue, Mar 20, 2012 at 11:56:25PM +0100, Jan Kara wrote:
> Move clearing of I_SYNC into inode_sync_complete(). It is more logical to have
> clearing of I_SYNC bit and waking of waiters in one place. Also later we will
> have two places needing to clear I_SYNC and wake up waiters so this allows them
> to use the common helper. Moving of I_SYNC clearing to a later stage of
> writeback_single_inode() is safe since we hold i_lock all the time.
>
> Signed-off-by: Jan Kara <jack@suse.cz>
The code changes look good, but should we really remove a comment that
describes memory barrier? IMHO any undocumented barrier is a bug
waiting to happen.
Reviewed-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2012-04-30 14:36 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 22:56 [PATCH 0/7 v2] writeback: Avoid iput() from flusher thread Jan Kara
2012-03-20 22:56 ` [PATCH 1/7] writeback: Move clearing of I_SYNC into inode_sync_complete() Jan Kara
2012-04-30 14:36 ` Christoph Hellwig [this message]
2012-04-30 21:30 ` Jan Kara
2012-03-20 22:56 ` [PATCH 2/7] writeback: Move requeueing when I_SYNC set to writeback_sb_inodes() Jan Kara
2012-04-30 14:38 ` Christoph Hellwig
2012-03-20 22:56 ` [PATCH 3/7] writeback: Move I_DIRTY_PAGES handling Jan Kara
2012-03-22 2:41 ` Fengguang Wu
2012-03-22 8:35 ` Jan Kara
2012-03-28 3:11 ` Fengguang Wu
2012-03-28 15:12 ` Christoph Hellwig
2012-04-30 14:39 ` Christoph Hellwig
2012-04-30 14:41 ` Christoph Hellwig
2012-04-30 21:21 ` Jan Kara
2012-03-20 22:56 ` [PATCH 4/7] writeback: Separate inode requeueing after writeback Jan Kara
2012-04-30 14:43 ` Christoph Hellwig
2012-04-30 21:42 ` Jan Kara
2012-03-20 22:56 ` [PATCH 5/7] writeback: Remove wb->list_lock from writeback_single_inode() Jan Kara
2012-04-30 14:44 ` Christoph Hellwig
2012-03-20 22:56 ` [PATCH 6/7] writeback: Refactor writeback_single_inode() Jan Kara
2012-03-20 23:35 ` Dave Chinner
2012-03-21 10:03 ` Jan Kara
2012-04-30 14:46 ` Christoph Hellwig
2012-03-20 22:56 ` [PATCH 7/7] writeback: Avoid iput() from flusher thread Jan Kara
2012-03-20 23:50 ` Dave Chinner
2012-03-21 10:25 ` Jan Kara
2012-03-22 3:03 ` Fengguang Wu
2012-03-22 6:27 ` Dave Chinner
2012-03-22 9:50 ` Jan Kara
2012-03-22 3:01 ` Fengguang Wu
2012-04-30 15:30 ` Christoph Hellwig
2012-04-30 21:58 ` Jan Kara
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