Solving the ext3 latency problem [LWN.net]

Solving the ext3 latency problem

Posted Apr 17, 2009 6:52 UTC (Fri) by bojan (subscriber, #14302)
In reply to: Solving the ext3 latency problem by chad.netzer
Parent article: Solving the ext3 latency problem

Yeah, confusing isn't it. Relevant part of the docs, diffed:

 * writeback mode
-In data=writeback mode, ext3 does not journal data at all.  This mode provides
+In data=writeback mode, ext4 does not journal data at all.  This mode provides
 a similar level of journaling as that of XFS, JFS, and ReiserFS in its default
 mode - metadata journaling.  A crash+recovery can cause incorrect data to
 appear in files which were written shortly before the crash.  This mode will
-typically provide the best ext3 performance.
+typically provide the best ext4 performance.

It would be really good if Ted could comment if the above was simply copied from ext3 docs or if it is really still true for ext4 in writeback mode as well.

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