From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 4/5] repair: don't cache large blkmap allocations
Date: Mon, 10 Oct 2011 11:14:00 +1100 [thread overview]
Message-ID: <20111010001400.GO3159@dastard> (raw)
In-Reply-To: <20111009234809.GB13527@infradead.org>
On Sun, Oct 09, 2011 at 07:48:09PM -0400, Christoph Hellwig wrote:
> > + /* consider more than 100k extents rare */
> > + if (blkmap->naexts < 100 * 1024)
> > + return;
>
> 100k extents still seems like a fairly high number. Otherwise looks
> okay.
But not unreasonable for a filesystem full of torrents ;)
> (If only we had a non-sucky threaded memory allocator in userspace..)
Perhaps we should look at the talloc code from ccan?
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2011-10-10 0:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-09 23:11 [PATCH 0/5, v2] repair: sector size and blkmap fixes Dave Chinner
2011-10-09 23:11 ` [PATCH 1/5] repair: handle repair of image files on large sector size filesystems Dave Chinner
2011-10-09 23:52 ` Christoph Hellwig
2011-10-10 0:17 ` Dave Chinner
2011-10-10 0:19 ` Christoph Hellwig
2011-10-09 23:11 ` [PATCH 2/5] repair: fix some valgrind reported errors on i686 Dave Chinner
2011-10-09 23:45 ` Christoph Hellwig
2011-10-10 0:20 ` Dave Chinner
2011-10-10 13:14 ` Christoph Hellwig
2011-10-09 23:11 ` [PATCH 3/5] repair: handle memory allocation failure from blkmap_grow Dave Chinner
2011-10-09 23:51 ` Christoph Hellwig
2011-10-10 0:10 ` Dave Chinner
2011-10-09 23:11 ` [PATCH 4/5] repair: don't cache large blkmap allocations Dave Chinner
2011-10-09 23:48 ` Christoph Hellwig
2011-10-10 0:14 ` Dave Chinner [this message]
2011-10-10 13:22 ` Christoph Hellwig
2011-10-09 23:11 ` [PATCH 5/5] repair: prevent blkmap extent count overflows Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2011-10-10 1:08 [PATCH 0/5, v3] repair: sector size and blkmap fixes Dave Chinner
2011-10-10 1:08 ` [PATCH 4/5] repair: don't cache large blkmap allocations Dave Chinner
2011-10-10 14:15 ` Christoph Hellwig
2011-10-13 9:57 ` Alex Elder
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