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 <sandeen@redhat.com> [tytso@mit.edu: reworked check to make it clearer] Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu>
parent
091e26df
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