v1->v2: - Add a set of simple per-subnode APIs that is between percpu and per-node in granularity. - Make dlock list to use the per-subnode APIs so as to reduce the total number of separate linked list that needs to be managed and iterated. - There is no change in patches 1-5.
This is a follow up of the following patchset: [PATCH v7 0/4] vfs: Use per-cpu list for SB's s_inodes list https://lkml.org/lkml/2016/4/12/1009 The main change is the renaming of percpu list to dlock list, as suggested by Christoph Lameter. It also adds a new patch from Boqun Feng to add the __percpu modifier for parameters. Patch 1 introduces the dlock list. Patch 2 adds the __percpu modifier to the appropriate parameters. Patch 3 cleans up the fsnotify_unmount_inodes() function by making the code simpler and more standard. Patch 4 replaces the use of list_for_each_entry_safe() in evict_inodes() and invalidate_inodes() by list_for_each_entry(). Patch 5 modifies the superblock and inode structures to use the dlock list. The corresponding functions that reference those structures are modified. Patch 6 adds a new set of per-subnode APIs that allow distributed resources with a granularity that is in between a per-cpu and per-node systems. Patch 7 modifies the dlock list to use the new per-subnode APIs so that it will have less linked lists to manage and iterate compared with the per-cpu version. Boqun Feng (1): lib/dlock-list: Add __percpu modifier for parameters Jan Kara (2): fsnotify: Simplify inode iteration on umount vfs: Remove unnecessary list_for_each_entry_safe() variants Waiman Long (4): lib/dlock-list: Distributed and lock-protected lists vfs: Use dlock list for superblock's inode list lib/persubnode: Introducing a simple per-subnode APIs lib/dlock-list: Use the per-subnode APIs for managing lists fs/block_dev.c | 13 ++- fs/drop_caches.c | 10 +- fs/fs-writeback.c | 13 ++- fs/inode.c | 40 +++----- fs/notify/inode_mark.c | 53 +++-------- fs/quota/dquot.c | 16 ++-- fs/super.c | 7 +- include/linux/dlock-list.h | 234 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/fs.h | 8 +- include/linux/persubnode.h | 80 +++++++++++++++ init/main.c | 2 + lib/Makefile | 4 +- lib/dlock-list.c | 102 +++++++++++++++++++ lib/persubnode.c | 119 ++++++++++++++++++++++ 14 files changed, 605 insertions(+), 96 deletions(-) create mode 100644 include/linux/dlock-list.h create mode 100644 include/linux/persubnode.h create mode 100644 lib/dlock-list.c create mode 100644 lib/persubnode.c
