| commit | 01e1b69cfcdcfdd5b405165eaba29428f8b18a7c | [log] [tgz] |
|---|---|---|
| author | David Chinner <dgc@sgi.com> | Tue Mar 14 13:29:16 2006 +1100 |
| committer | Nathan Scott <nathans@sgi.com> | Tue Mar 14 13:29:16 2006 +1100 |
| tree | 3ca7e8d0047ff03ca532f39b0fc4cd50381e8ecc | |
| parent | 87cbc49cd4b773a972bce56c5dd09c4717f3285b [diff] |
[XFS] using a spinlock per cpu for superblock counter exclusion results in a preēmpt counter overflow at 256p and above. Change the exclusion mechanism to use atomic bit operations and busy wait loops to emulate the spin lock exclusion mechanism but without the preempt count issues. SGI-PV: 950027 SGI-Modid: xfs-linux-melb:xfs-kern:25338a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>