This series converts the VFS cache shrinkers to a per-superblock shrinker, and provides a callout from the superblock shrinker to allow the filesystem to shrink internal caches proportionally to the amount of reclaim done to the VFS caches. The original posting contains the motiviation, benefits, performance, etc, and rather than repeat it all, just look here: https://lkml.org/lkml/2011/6/2/42 The version has been rebased onto the untested branch in Al's VFS git tree, fixes the review comments from the first version, and has had much more testing under different workloads. --- Version 2: o rebase onto Al's #untested branch o fix build problem in Al's untested branch o move all slab shrinker modifications tracepoints into a single patch. o renames some of the tracepoint variables to be more obvious as to what they are recording. o move pin_sb_for_writeback() to fs/super.c and rename it to grab_super_passive() so the shrinker and writeback use the same passive reference counting and unmount detection o rework per-superblock shrinker to use grab_super_passive() o minor typo fixes in commit messages, documentation and commit messages --- When the git mirror updates, this patchset will also be available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev.git per-sb-shrinker If you get a version based on the current Linus tree, then it hasn't updated yet.... Dave Chinner (14): dcache: fix __d_alloc prototype to use const vmscan: add shrink_slab tracepoints vmscan: shrinker->nr updates race and go wrong vmscan: reduce wind up shrinker->nr when shrinker can't do work vmscan: add customisable shrinker batch size inode: convert inode_stat.nr_unused to per-cpu counters inode: Make unused inode LRU per superblock inode: move to per-sb LRU locks superblock: move pin_sb_for_writeback() to fs/super.c superblock: introduce per-sb cache shrinker infrastructure inode: remove iprune_sem superblock: add filesystem shrinker operations vfs: increase shrinker batch size xfs: make use of new shrinker callout for the inode cache Documentation/filesystems/vfs.txt | 22 +++++++ fs/dcache.c | 121 ++++-------------------------------- fs/fs-writeback.c | 28 +-------- fs/inode.c | 124 ++++++++++++------------------------- fs/internal.h | 3 +- fs/libfs.c | 2 + fs/super.c | 109 ++++++++++++++++++++++++++++++++- fs/xfs/linux-2.6/xfs_super.c | 26 +++++--- fs/xfs/linux-2.6/xfs_sync.c | 71 ++++++++------------- fs/xfs/linux-2.6/xfs_sync.h | 5 +- include/linux/fs.h | 14 ++++ include/linux/mm.h | 1 + include/trace/events/vmscan.h | 71 +++++++++++++++++++++ mm/vmscan.c | 71 +++++++++++++++++----- 14 files changed, 374 insertions(+), 294 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
