tree 2dc1deaec23a7da29b72152a4225c2600dacf1d4
parent 9f4cbecd7e5ee6390fecd6032dc04ca8c9805dc9
author David Chinner <dgc@sgi.com> 1142302389 +1100
committer Nathan Scott <nathans@sgi.com> 1142302389 +1100

[XFS] On machines with more than 8 cpus, when running parallel I/O
threads, the incore superblock lock becomes the limiting factor for
buffered write throughput. Make the contended fields in the incore
superblock use per-cpu counters so that there is no global lock to limit
scalability.

SGI-PV: 946630
SGI-Modid: xfs-linux-melb:xfs-kern:25106a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>