From: Christoph Hellwig <hch@infradead.org>
To: Geoffrey Wehrman <gwehrman@sgi.com>
Cc: xfs@oss.sgi.com
Subject: Re: Issues with delalloc->real extent allocation
Date: Tue, 18 Jan 2011 15:40:09 -0500 [thread overview]
Message-ID: <20110118204008.GA28791@infradead.org> (raw)
In-Reply-To: <20110118143000.GB8803@sgi.com>
On Tue, Jan 18, 2011 at 08:30:00AM -0600, Geoffrey Wehrman wrote:
> Glad you were able to understand what I meant. Something I didn't think
> of earlier though: What happens when I try to use an 8 GB on a system
> with only 4 GB of memory? I'm not really worried about this pathological
> case, but I do wonder what the effects will be of allocating what could
> be significant quantities of memory in .aio_write.
I think for large regions we'd be much better off to only zero the
blocks on disk, not in-memory - for example like the code in
xfs_zero_remaining_bytes does.
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next prev parent reply other threads:[~2011-01-18 20:37 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-14 0:29 Issues with delalloc->real extent allocation Dave Chinner
2011-01-14 16:40 ` Geoffrey Wehrman
2011-01-14 22:59 ` Dave Chinner
2011-01-15 4:16 ` Geoffrey Wehrman
2011-01-17 5:18 ` Dave Chinner
2011-01-17 14:37 ` Geoffrey Wehrman
2011-01-18 0:24 ` Dave Chinner
2011-01-18 14:30 ` Geoffrey Wehrman
2011-01-18 20:40 ` Christoph Hellwig [this message]
2011-01-18 22:03 ` Dave Chinner
2011-01-14 21:43 ` bpm
2011-01-14 23:32 ` bpm
2011-01-14 23:50 ` bpm
2011-01-14 23:55 ` Dave Chinner
2011-01-17 20:12 ` bpm
2011-01-18 1:44 ` Dave Chinner
2011-01-18 20:47 ` Christoph Hellwig
2011-01-18 23:18 ` Dave Chinner
2011-01-19 12:03 ` Christoph Hellwig
2011-01-19 13:31 ` Dave Chinner
2011-01-19 13:55 ` Christoph Hellwig
2011-01-20 1:33 ` Dave Chinner
2011-01-20 11:16 ` Christoph Hellwig
2011-01-21 1:59 ` Dave Chinner
2011-01-20 14:45 ` Geoffrey Wehrman
2011-01-21 2:51 ` Dave Chinner
2011-01-21 14:41 ` Geoffrey Wehrman
2011-01-23 23:26 ` Dave Chinner
2011-01-17 0:28 ` Lachlan McIlroy
2011-01-17 4:37 ` Dave Chinner
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