From: Christoph Hellwig <hch@lst.de>
To: Nick Piggin <npiggin@suse.de>
Cc: Christoph Hellwig <hch@lst.de>, Vivek Goyal <vgoyal@redhat.com>,
Jens Axboe <axboe@kernel.dk>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: trying to understand READ_META, READ_SYNC, WRITE_SYNC & co
Date: Sat, 26 Jun 2010 12:16:13 +0200 [thread overview]
Message-ID: <20100626101613.GA27972@lst.de> (raw)
In-Reply-To: <20100626101045.GJ29809@laptop>
On Sat, Jun 26, 2010 at 08:10:45PM +1000, Nick Piggin wrote:
> But I'm sure apps can submit fsyncs much faster than once per
> few ms, like small database transactions.
fsync / O_SYNC should be irrelevant for the idling logic. One those
retourn to the user data must have made it to the disk, and with our
barrier implementation that implies fully draining any outstanding I/O
on the device.
next prev parent reply other threads:[~2010-06-26 10:16 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-21 9:48 trying to understand READ_META, READ_SYNC, WRITE_SYNC & co Christoph Hellwig
2010-06-21 10:04 ` Jens Axboe
2010-06-21 11:04 ` Christoph Hellwig
2010-06-21 18:56 ` Jens Axboe
2010-06-21 19:14 ` Christoph Hellwig
2010-06-21 19:16 ` Jens Axboe
2010-06-21 19:20 ` Christoph Hellwig
2010-06-21 21:36 ` Vivek Goyal
2010-06-23 10:01 ` Christoph Hellwig
2010-06-24 1:44 ` Vivek Goyal
2010-06-25 11:03 ` Christoph Hellwig
2010-06-26 3:35 ` Vivek Goyal
2010-06-26 10:05 ` Christoph Hellwig
2010-06-26 11:20 ` Jens Axboe
2010-06-26 11:56 ` Christoph Hellwig
2010-06-27 15:44 ` Jeff Moyer
2010-06-29 9:06 ` Corrado Zoccolo
2010-06-29 12:30 ` Vivek Goyal
2010-06-30 15:30 ` Corrado Zoccolo
2010-06-26 9:25 ` Nick Piggin
2010-06-26 9:27 ` Christoph Hellwig
2010-06-26 10:10 ` Nick Piggin
2010-06-26 10:16 ` Christoph Hellwig [this message]
2010-06-21 18:52 ` Jeff Moyer
2010-06-21 18:58 ` Jens Axboe
2010-06-21 19:08 ` Jeff Moyer
2010-06-23 9:26 ` Christoph Hellwig
2010-06-21 20:25 ` Vivek Goyal
2010-06-23 10:02 ` Christoph Hellwig
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