Hi all, Here's v2 of the /proc readdir optimization patches. See v1 for the full introductary cover letter. The refactoring in v2 adds a bit more to the idr code, but it remains trivial with respect to eventual xarray (tag -> mark) conversion. On that topic, I'm still looking for some feedback in the v1 thread [1] on the prospective approach... Brian [1] https://lore.kernel.org/linux-fsdevel/YrykXim1t71TgdYg@bfoster/ v2: - Clean up idr helpers to be more generic. - Use ->idr_base properly. - Lift tgid iteration helper into pid.c to abstract tag logic from users. v1: https://lore.kernel.org/linux-fsdevel/20220614180949.102914-1-bfoster@xxxxxxxxxx/ Brian Foster (4): radix-tree: propagate all tags in idr tree idr: support optional id tagging pid: tag pids associated with group leader tasks procfs: use efficient tgid pid search on root readdir fs/proc/base.c | 17 +---------------- include/linux/idr.h | 26 ++++++++++++++++++++++++++ include/linux/pid.h | 3 ++- kernel/fork.c | 2 +- kernel/pid.c | 40 +++++++++++++++++++++++++++++++++++++++- lib/radix-tree.c | 26 +++++++++++++++----------- 6 files changed, 84 insertions(+), 30 deletions(-) -- 2.35.3
