From: Eric Sandeen Date: Wed, 30 Jan 2013 05:39:28 +0000 (-0500) Subject: jbd2: don't wake kjournald unnecessarily X-Git-Tag: v3.9-rc1~64^2~39 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7b04ac00ee273cb2c699ed14139fc072add4097;p=pandora-kernel.git jbd2: don't wake kjournald unnecessarily Don't send an extra wakeup to kjournald in the case where we already have the proper target in j_commit_request, i.e. that transaction has already been requested for commit. commit deeeaf13 "jbd2: fix fsync() tid wraparound bug" changed the logic leading to a wakeup, but it caused some extra wakeups which were found to lead to a measurable performance regression. Signed-off-by: Eric Sandeen [tytso@mit.edu: reworked check to make it clearer] Signed-off-by: "Theodore Ts'o" --- Reading git-diff-tree failed