| commit | e124a82f3c4efc2cc2bae68a2bf30020fb8c4fc2 | [log] [tgz] |
|---|---|---|
| author | Alex Elder <elder@dreamhost.com> | Sun Jan 29 13:57:44 2012 -0600 |
| committer | Alex Elder <elder@dreamhost.com> | Thu Mar 22 10:47:47 2012 -0500 |
| tree | 9c1b768d2871b181bcc21d89bedf9bf9dbc6d998 | |
| parent | 1ddbe94eda58597cb6dd464b455cb62d3f68be7b [diff] |
rbd: protect the rbd_dev_list with a spinlock The rbd_dev_list is just a simple list of all the current rbd_devices. Using the ctl_mutex as a concurrency guard is overkill. Instead, use a spinlock for that specific purpose. This also reduces the window that the ctl_mutex needs to be held in rbd_add(). Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>