From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 30 Sep 2009 04:32:06 +0000 (-0400)
Subject: jbd2: Use tracepoints for history file
X-Git-Tag: v2.6.32-rc3~60^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bf6993276f74d46776f35c45ddef29b981b1d1c6;p=pandora-kernel.git

jbd2: Use tracepoints for history file

The /proc/fs/jbd2/<dev>/history was maintained manually; by using
tracepoints, we can get all of the existing functionality of the /proc
file plus extra capabilities thanks to the ftrace infrastructure.  We
save memory as a bonus.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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