linux

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Eric Sandeen e7b04ac00e 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>

2013-01-30 00:39:28 -05:00

checkpoint.c

jbd2: remove bh_state lock from checkpointing code

2012-03-13 22:45:25 -04:00

commit.c

jbd2: fix assertion failure in commit code due to lacking transaction credits

2012-09-26 23:11:13 -04:00

journal.c

jbd2: don't wake kjournald unnecessarily

2013-01-30 00:39:28 -05:00

Kconfig

jbd2: Grab a reference to the crc32c driver if necessary