diff options
| author | Shaohua Li <[email protected]> | 2016-04-25 16:52:38 -0700 |
|---|---|---|
| committer | Shaohua Li <[email protected]> | 2016-04-25 18:21:33 -0700 |
| commit | 9c573de3283af007ea11c17bde1e4568d9417328 (patch) | |
| tree | 65df34db491d33e1432691b5ec69d53388df6f4f /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | b297874a2d5c5fcaeb5242a8b4708e54c5477d90 (diff) | |
MD: make bio mergeable
blk_queue_split marks bio unmergeable, which makes sense for normal bio.
But if dispatching the bio to underlayer disk, the blk_queue_split
checks are invalid, hence it's possible the bio becomes mergeable.
In the reported bug, this bug causes trim against raid0 performance slash
https://bugzilla.kernel.org/show_bug.cgi?id=117051
Reported-and-tested-by: Park Ju Hyung <[email protected]>
Fixes: 6ac45aeb6bca(block: avoid to merge splitted bio)
Cc: [email protected] (v4.3+)
Cc: Ming Lei <[email protected]>
Cc: Neil Brown <[email protected]>
Reviewed-by: Jens Axboe <[email protected]>
Signed-off-by: Shaohua Li <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions