From: Chris Mason <mason@suse.com>
To: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Andrew Morton <akpm@osdl.org>,
col-pepper@piments.com, linux-kernel@vger.kernel.org
Subject: Re: o_sync in vfat driver
Date: Thu, 2 Mar 2006 08:45:08 -0500 [thread overview]
Message-ID: <200603020845.10083.mason@suse.com> (raw)
In-Reply-To: <87mzg9wst0.fsf@duaron.myhome.or.jp>
On Wednesday 01 March 2006 20:15, OGAWA Hirofumi wrote:
> > Just to make sure we're using the same terms, do you mean the pages are
> > marked dirty and on the SB's dirty list, or do you mean the page has been
> > through writepage and is currently on its way to the disk?
>
> The page is already on device's request queue, and the page is already
> marked a PG_writeback. And that page is not processed by device yet.
>
> Then, you call next filemap_fdatawrite(), it just re-dirty the page
> and queues to sb->s_dirty, because the page's buffer_heads is still
> locked. So, the re-dirtyed page is re-submited to device by
> periodically wb_kupdate()?
filemap_fdatawrite() won't redirty the page. It will wait on the pending
writeback.
-chris
next prev parent reply other threads:[~2006-03-02 13:45 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-26 23:08 o_sync in vfat driver col-pepper
2006-02-27 0:51 ` Andrew Morton
2006-02-27 22:19 ` col-pepper
2006-02-27 23:12 ` Andrew Morton
2006-02-28 18:47 ` Chris Mason
2006-02-28 19:10 ` Andrew Morton
2006-02-28 19:48 ` Chris Mason
[not found] ` <87u0aiw6pi.fsf@duaron.myhome.or.jp>
2006-03-01 15:23 ` Chris Mason
[not found] ` <87mzg9wst0.fsf@duaron.myhome.or.jp>
2006-03-02 13:45 ` Chris Mason [this message]
2006-03-02 14:07 ` OGAWA Hirofumi
2006-03-02 17:01 ` Chris Mason
2006-03-02 18:14 ` OGAWA Hirofumi
2006-03-29 2:13 ` Mathis Ahrens
2006-03-30 17:35 ` col-pepper
2006-02-28 0:52 ` Machida, Hiroyuki
-- strict thread matches above, loose matches on Subject: below --
2006-02-26 22:55 col-pepper
[not found] <op.s5cj47sxj68xd1@mail.piments.com>
[not found] ` <op.s5jpqvwhui3qek@mail.piments.com>
[not found] ` <op.s5kxhyzgfx0war@mail.piments.com>
[not found] ` <op.s5kx7xhfj68xd1@mail.piments.com>
[not found] ` <op.s5kya3t0j68xd1@mail.piments.com>
[not found] ` <op.s5ky2dbcj68xd1@mail.piments.com>
[not found] ` <op.s5ky71nwj68xd1@mail.piments.com>
[not found] ` <op.s5kzao2jj68xd1@mail.piments.com>
2006-02-26 22:50 ` col-pepper
2006-02-27 13:28 ` Lennart Sorensen
2006-02-27 13:50 ` Arjan van de Ven
2006-02-27 14:06 ` Anton Altaparmakov
2006-02-27 14:27 ` Arjan van de Ven
2006-02-27 14:41 ` Anton Altaparmakov
2006-02-27 21:04 ` col-pepper
2006-02-27 21:17 ` Arjan van de Ven
2006-02-27 23:21 ` col-pepper
2006-02-27 21:32 ` linux-os (Dick Johnson)
2006-02-27 23:21 ` col-pepper
2006-02-28 13:10 ` linux-os (Dick Johnson)
2006-02-28 13:52 ` Sergei Organov
2006-02-28 15:18 ` Lennart Sorensen
2006-02-28 16:16 ` linux-os (Dick Johnson)
2006-02-28 17:23 ` Sergei Organov
2006-02-28 18:09 ` Krzysztof Halasa
2006-02-28 17:16 ` col-pepper
2006-02-28 22:38 ` Pavel Machek
2006-03-01 4:28 ` Kyle Moffett
2006-03-02 8:23 ` col-pepper
2006-03-02 8:32 ` Pavel Machek
2006-02-28 16:11 ` Helge Hafting
2006-02-28 22:37 ` Pavel Machek
2006-02-27 14:26 ` linux-os (Dick Johnson)
2006-02-27 18:53 ` Jan Engelhardt
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