This series converts the XFS inode cache to use RCU freeing for freeing of the inodes and uses RCU locking for all the lookups. It uses the ip->i_ino values and ip->i_flags & XFS_IRECLAIM being checked under the ip->i_flags_lock to detect inodes that have been freed during lookups. Version 3: - add patch for specific RCU freeing of inodes rather than relying on an external tree to provide RCU freeing functionality. This uses standard RCU freeing mechanisms rather than SLAB_DESTROY_BY_RCU. This is kept as a separate patch to minimise the merge conflict issues that may arise if the change is made through VFS code first. - Drop specific references to SLAB_DESTROY_BY_RCU, but keep all the lookup guards for reclaimed/reused inodes as they are mostly the same for both methods of RCU inode freeing. Version 2: - check ip->i_ino under i_flags lock on cache hit - remove duplicate ip->i_ino == 0 check in xfs_dqrele_inode - Fixed inode cluster walks to check for valid i_ino under i_flags_lock. - Fixed ag walk lookups to check i_ino under i_flags_lock. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
