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Commit 7e2fb2d7 authored by Eric Sandeen's avatar Eric Sandeen Committed by Jan Kara
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jbd: 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
commit has already been requested for commit.

commit d9b01934 "jbd: 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: default avatarEric Sandeen <sandeen@redhat.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent b719f430
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