NeilBrown f90145f317
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 >
2016-06-13 11:54:14 -07:00
2016-05-25 15:38:56 -07:00
2016-05-23 18:19:21 -07:00
2016-05-25 15:29:21 -07:00
2016-05-24 11:00:20 -07:00
2016-05-20 17:58:30 -07:00
2016-05-13 16:54:59 +02:00
2016-05-19 10:02:26 -07:00
2016-05-20 22:31:33 -07:00
2016-05-25 10:40:15 -07:00
2016-05-19 11:27:09 -07:00
2016-05-25 15:29:21 -07:00
2016-05-18 02:48:37 +02:00
2016-05-13 17:30:18 +08:00
2016-05-20 22:02:55 -07:00
2016-05-19 11:47:18 -07:00
2016-05-17 17:05:30 -07:00
2016-05-20 21:26:15 -07:00
2016-05-20 21:26:15 -07:00
2016-05-25 10:40:15 -07:00
2016-05-17 12:42:27 +02:00
2016-05-25 10:40:15 -07:00
2016-05-20 17:58:30 -07:00
2016-05-20 21:20:31 -07:00
2016-05-19 17:48:12 -07:00
2016-05-20 22:20:48 -07:00
2016-05-20 14:35:07 -07:00
2016-05-25 10:40:15 -07:00
2016-05-20 14:51:34 -07:00
2016-05-20 10:20:47 -07:00
2016-05-20 20:57:27 -07:00
2016-05-25 10:40:15 -07:00
2016-06-13 11:54:14 -07:00
2016-05-19 20:00:06 -07:00
2016-05-24 11:00:20 -07:00
2016-05-23 17:04:14 -07:00
2016-05-18 16:38:59 -07:00
2016-05-20 11:10:24 -07:00
2016-05-20 21:20:31 -07:00
2016-05-20 20:57:27 -07:00
2016-05-24 11:00:20 -07:00
2016-05-22 19:24:13 -07:00
2016-05-21 12:33:04 -07:00
2016-05-17 16:03:32 -07:00
2016-05-24 11:00:20 -07:00
2016-05-20 21:20:31 -07:00
2016-05-20 21:12:25 -07:00
2016-05-19 12:50:56 -07:00
2016-05-20 17:58:30 -07:00
2016-05-20 21:26:15 -07:00
2016-05-20 14:06:21 -07:00
2016-05-16 19:17:22 -07:00
2016-05-25 10:40:15 -07:00
2016-05-17 14:45:02 +02:00
2016-05-12 15:50:19 -07:00
2016-05-21 17:07:17 +02:00
2016-05-20 20:57:27 -07:00
2016-05-20 18:33:37 -07:00
2016-05-23 17:53:39 -07:00
2016-05-19 15:20:24 +02:00
2016-05-24 11:12:32 -07:00
2016-05-24 11:00:20 -07:00
2016-05-20 14:35:07 -07:00
2016-05-20 20:57:27 -07:00
2016-05-20 21:12:25 -07:00
2016-05-25 09:47:26 -07:00
2016-05-25 10:40:15 -07:00
2016-05-22 19:44:13 +03:00
2016-05-25 10:19:17 -07:00
2016-05-24 10:22:34 -07:00
2016-05-23 11:18:01 -07:00
2016-05-20 22:02:53 -07:00
f90145f317