From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Mason <mason@suse.com>
Subject: Re: [PATCH CFT] tons of logging patches
Date: 02 Aug 2002 08:28:07 -0400
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Hello everyone,

I've uploaded 03-data-logging-24.diff, which fixes a tail packing oops
in data=journal mode, and fixes the data=ordered slow down (5-10%)
introduced in -23.  

-23 flushed all the ordered buffer heads with the journal lock held,
which meant no new transactions could start while the ordered buffers
were being flushed.  This was safe but slower.

-24 flushes them right before the commit blocks (like -19 did), and only
flushes the tail conversion targets with the journal lock held.  Doing
the tail conversion targets later risks losing the tail data after a
crash.

Thanks to grev@namesys.com who reported the ordered write bug in -19 and
the data=journal oops in -23.

-chris