This series optimizes how XFS deals with busy extents. It starts to track them exactly, and allows reuses where possible (metadata to metadata) or else tries to avoid busy extents during allocations. This means we don't have a single log force due to busy extents during either xfstests, compilebench or postmark on my testsystem, which can easily be tracked using the new tracepoints added in the last patch. Changes from V4: - fix xfs_alloc_busy_trim tracing Changes from V3: - address review comments from Alex in patch 2 - add a new patch to reduce pagb_lock roundtrips Changes from V2: - remove the bmapi userdata tracking now that is unused - restructure the busy extent reuse code to make it more suitable for the discard support - reshuffle the patch boundaries _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
