| commit | 504634f60f463e73e7d58c6810a04437da942dba | [log] [tgz] |
|---|---|---|
| author | Shaohua Li <shli@fb.com> | Fri Nov 18 09:44:08 2016 -0800 |
| committer | Shaohua Li <shli@fb.com> | Fri Nov 18 09:47:57 2016 -0800 |
| tree | abdc28fb557c2158f005a6f271c60c983562c43e | |
| parent | 578b54ade8a5e04df6edc14cb68ad0f6f491a1a1 [diff] |
md: add blktrace event for writes to superblock superblock write is an expensive operation. With raid5-cache, it can be called regularly. Tracing to help performance debug. Signed-off-by: Shaohua Li <shli@fb.com> Cc: NeilBrown <neilb@suse.com>