| commit | 7b1485bab9c49b0d3811d72beb0de60c7b8b337d | [log] [tgz] |
|---|---|---|
| author | NeilBrown <neilb@suse.de> | Mon Dec 15 12:56:59 2014 +1100 |
| committer | NeilBrown <neilb@suse.de> | Fri Feb 06 09:32:55 2015 +1100 |
| tree | 7cb275a901ca30331d6c53be02be58bd578cb2b8 | |
| parent | f97fcad38f2ecf2e34b6f0ab93f74f2978dbe008 [diff] |
md/raid5: use ->lock to protect accessing raid5 sysfs attributes.
It is important that mddev->private isn't freed while
a sysfs attribute function is accessing it.
So use mddev->lock to protect the setting of ->private to NULL, and
take that lock when checking ->private for NULL and de-referencing it
in the sysfs access functions.
This only applies to the read ('show') side of access. Write
access will be handled separately.
Signed-off-by: NeilBrown <neilb@suse.de>