tree 1550cc5840d8a4323fe5f6357da227436cd542ec
parent b719f43059903820c31edb30f4663a2818836e7f
author Eric Sandeen <sandeen@redhat.com> 1355850237 -0600
committer Jan Kara <jack@suse.cz> 1358200245 +0100

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 d9b0193 "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: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>