On Thu, 02 Aug 2007 02:51:19 +0900, Tejun Heo <htejun@xxxxxxxxx> wrote: > Eric W. Biederman wrote: > > My practical problem is that I need to hold a lock for the sysfs > > dirents and while that lock is held I need to call sysfs_get_dentry > > for the destination directory once for each superblock. > > > > It might be that some kind of reader-writer lock strategy is what > > I need to untangle this mess. Rather then making changing to i_mutex. > > All I know is at the moment it is taking a lot of code reading and > > brain storm to come of with something that is easy to maintain. > > Just in case, sysfs used to have sysfs_rename_rwsem to protect > move/rename against tree walking, which became unnecessary after i_mutex > -> sysfs_mutex conversion. Move/rename can use stupid big fat locks if > that helps. I second that. Reintroduction of sysfs_rename_rwsem or something similar may be the best way to avoid headaches. _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
