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| author |   Jens Axboe <axboe@fb.com> | 2014-09-16 10:37:37 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-09-22 11:54:04 -0600 |
| commit | 538b75341835e3c2041ff066408de10d24fdc830 (patch) | |
| tree | 6b7b60f296779302cc70d7c79e47b4dcc440a9be /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Merge tag 'gfs2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes (diff) | |
| download | wireguard-linux-538b75341835e3c2041ff066408de10d24fdc830.tar.xz wireguard-linux-538b75341835e3c2041ff066408de10d24fdc830.zip | |
blk-mq: request deadline must be visible before marking rq as started
When we start the request, we set the deadline and flip the bits
marking the request as started and non-complete. However, it's
important that the deadline store is ordered before flipping the
bits, otherwise we could have a small window where the request is
marked started but with an invalid deadline. This can confuse the
timeout handling.
Suggested-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions