From: Jan Kara <jack@suse.cz>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jan Kara <jack@suse.cz>, Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@lst.de>,
LKML <linux-kernel@vger.kernel.org>,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 1/3] writeback: introduce wbc.tagged_sync for the WB_SYNC_NONE sync stage
Date: Wed, 4 May 2011 23:00:59 +0200 [thread overview]
Message-ID: <20110504210059.GG6968@quack.suse.cz> (raw)
In-Reply-To: <20110502033035.537736600@intel.com>
On Mon 02-05-11 11:17:51, Wu Fengguang wrote:
> sync(2) is performed in two stages: the WB_SYNC_NONE sync and the
> WB_SYNC_ALL sync. Tag the first stage with wbc.tagged_sync and do
> livelock prevention for it, too.
>
> Note that writeback_inodes_sb() is called by not only sync(), they are
> treated the same because the other callers need also need livelock
> prevention.
I was thinking about this and could not find any - which other callers
of writeback_inodes_sb() need the livelock prevention?
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
next prev parent reply other threads:[~2011-05-04 21:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-02 3:17 [PATCH 0/3] sync livelock fixes v2 Wu Fengguang
2011-05-02 3:17 ` [PATCH 1/3] writeback: introduce wbc.tagged_sync for the WB_SYNC_NONE sync stage Wu Fengguang
2011-05-04 21:00 ` Jan Kara [this message]
2011-05-05 12:14 ` Wu Fengguang
2011-05-05 13:55 ` Jan Kara
2011-05-05 14:06 ` Wu Fengguang
2011-05-02 3:17 ` [PATCH 2/3] writeback: update dirtied_when for synced inode to prevent livelock Wu Fengguang
2011-05-04 21:10 ` Jan Kara
2011-05-05 12:18 ` Wu Fengguang
2011-05-02 3:17 ` [PATCH 3/3] writeback: avoid extra sync work at enqueue time Wu Fengguang
2011-05-04 21:24 ` Jan Kara
2011-05-05 12:27 ` Wu Fengguang
2011-05-05 12:41 ` Christoph Hellwig
2011-05-05 12:42 ` Christoph Hellwig
2011-05-05 12:48 ` Wu Fengguang
2011-05-05 14:01 ` Jan Kara
2011-05-05 14:10 ` Wu Fengguang
2011-05-05 14:13 ` Wu Fengguang
2011-05-05 14:34 ` Jan Kara
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110504210059.GG6968@quack.suse.cz \
--to=jack@suse.cz \
--cc=akpm@linux-foundation.org \
--cc=david@fromorbit.com \
--cc=fengguang.wu@intel.com \
--cc=hch@lst.de \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®