tree f6eb9e30a24d73597e5ce2a65b4638e9d1947504
parent 455b2864686d3591b3b2f39eb46290c95f76471f
author Dave Chinner <dchinner@redhat.com> 1278473047 +1000
committer Jens Axboe <jaxboe@fusionio.com> 1281198265 +0200

writeback: Add tracing to balance_dirty_pages

Tracing high level background writeback events is good, but it doesn't
give the entire picture. Add visibility into write throttling to catch IO
dispatched by foreground throttling of processing dirtying lots of pages.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>