tree cc2c0dd4a49ddad9691d0ef0312475db76bc6464
parent 0cc9d5257857608ba85885b75fcada13d359b5d1
author Sunil Mushran <sunil.mushran@oracle.com> 1293607563 -0800
committer Joel Becker <jlbec@evilplan.org> 1298202967 -0800

ocfs2: Use hrtimer to track ocfs2 fs lock stats

Patch makes use of the hrtimer to track times in ocfs2 lock stats.

The patch is a bit involved to ensure no additional impact on the memory
footprint. The size of ocfs2_inode_cache remains 1280 bytes on 32-bit systems.

A related change was to modify the unit of the max wait time from nanosec to
microsec allowing us to track max time larger than 4 secs. This change
necessitated the bumping of the output version in the debugfs file,
locking_state, from 2 to 3.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>