[LU-932] cleanup ll_inode_info to reduce inode size

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.2.0
• Story Points: 3
• Severity: 3
• Assignee: nasf (Inactive)
• Reporter: nasf (Inactive)

Description

Current "ll_inode_info" contains many special-used fields, some of them are only used for directory object, some are only used for non-directory object. We can share memory between those non-coexist fields to reduce "ll_inode_info" size.

Corresponding to ORNL-31

Issue Links

• Trackbacks: Changelog 2.2 version 2.2.0 Support for networks: o2iblnd OFED 1.5.4 Server support for kernels: 2.6.32220.4.2.el6 (RHEL6) Client support for unpatched kernels: 2.6.18274.18.1.el5 (RHEL5) 2.6.32220.4.2.el6 (RHEL6) 2.6.32.360....