d849f17dca
r156418: Don't set IN_CHANGE and IN_UPDATE on inodes for potentially suspended file systems. This could cause deadlocks when creating snapshots. (We can't do snapshots on ext2fs but it is useful to keep things in sync). r183079: - Only set i_offset in the parent directory's i-node during a lookup for non-LOOKUP operations. - Relax a VOP assertion for a DELETE lookup. r187528: Move the code from ufs_lookup.c used to do dotdot lookup, into the helper function. It is supposed to be useful for any filesystem that has to unlock dvp to walk to the ".." entry in lookup routine. MFC after: 5 days