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>