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List:       linux-ext4
Subject:    Re: [Ext2-devel] Htree questions
From:       "Stephen C. Tweedie" <sct () redhat ! com>
Date:       2002-11-15 16:39:23
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Hi,

On Fri, Nov 08, 2002 at 09:27:19PM -0800, Andrew Morton wrote:

> > If I had to guess at this point, the extra brelse is probably in some
> > error handling path, which means finding it is going to be a major
> > pain the ass.....
 
> We can find it with the ext3-debug patch.  That records, within
> each buffer_head, the last 32 "things" which happened to the
> buffer (via the BUFFER_TRACE macros).
> 
> The patch has moundered a bit.  I'll resurrect it this weekend.

I've got a set of current ext3 patches for 2.4 up at 

	http://people.redhat.com/sct/patches/ext3-2.4/dev-20021115/

which includes Ted's patchkit with Orlov and htree; a few
miscellaneous pending minor fixes or cleanups; a snapshot of the
deferred inode flushing code; and debugging code, both the "testdrive"
loop driver for fault injection/tracing, and the ext3 tracing diffs.

The tracing patches fine but I've not yet added any tracing points to
the htree code.  They should be useful as they stand, nonetheless.

There's a single patch containing all the diffs against 2.4.20-rc1 at

	http://people.redhat.com/sct/patches/ext3-2.4/dev-20021115/2.4.20-rc1.allpatches.patch

Cheers,
 Stephen


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