These patches cleans up the xfs mru code a bit and adds a cache for keeping track of which zone an inode allocated data to last. Placing file data in the same zone helps reduce write amplification. Sending out as an RFC to get comments, specifically about the potential mru lock contention when doing the lookup during allocation. Can we do something better there? I'll look into benchmarking the overhead, but any sugestions on how to do this best would be helpful. Christoph Hellwig (1): xfs: free the item in xfs_mru_cache_insert on failure Hans Holmberg (1): xfs: add inode to zone caching for data placement fs/xfs/xfs_filestream.c | 15 ++---- fs/xfs/xfs_mount.h | 1 + fs/xfs/xfs_mru_cache.c | 15 ++++-- fs/xfs/xfs_zone_alloc.c | 109 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 126 insertions(+), 14 deletions(-) -- 2.34.1
