[RFC] [Patch 0/3] readahead statistics slimmed down

This patch set simplifies the statistics code of the adaptive readahead feature by using the proposed statistic infrastructure. Patches are against 2.6.21-rc7-mm2. [RFC] [Patch 1/3] readahead statistics slimmed down, statistics prereq [RFC] [Patch 2/3] readahead statistics slimmed down, adapt

[RFC] [Patch 0/3] readahead statistics slimmed down

This patch set simplifies the statistics code of the adaptive readahead feature by using the proposed statistic infrastructure. Patches are against 2.6.21-rc7-mm2. [RFC] [Patch 1/3] readahead statistics slimmed down, statistics prereq [RFC] [Patch 2/3] readahead statistics slimmed down, adapt