diff options
| author | NeilBrown <neilb@suse.com> | 2016-06-02 16:19:52 +1000 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2016-06-13 11:54:14 -0700 |
| commit | f90145f317efad72e6552cecb09ab7a4e5d1e404 (patch) | |
| tree | b943d30b3ebedce33174711f3efabad4eaad0215 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | d44b0a928fa9925fb453d7acc42a48c79de2c6f7 (diff) | |
md/raid10: add rcu protection to rdev access in raid10_sync_request.
mirrors[].rdev can become NULL at any point unless:
- a counted reference is held
- ->reconfig_mutex is held, or
- rcu_read_lock() is held
Previously they could not become NULL during a resync/recovery/reshape either.
However when remove_and_add_spares() was added to hot_remove_disk(), that
changed.
So raid10_sync_request didn't previously need to protect rdev access,
but now it does.
Fix missed check(Shaohua)
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions