[0/6] Improve performance of containerised knfsd

Message

Trond Myklebust Dec. 10, 2019, 8:27 p.m. UTC

The following patches fix up the garbage collection for the knfsd file
cache, to make the behaviour under load be more predictable.
It also separates out the garbage collectors for knfsd instances running
under different containers to ensure that a close() or fput() of a file
in one container that hangs or is slow won't gum up the system for
all the other containers.

Trond Myklebust (6):
  nfsd: fix filecache lookup
  nfsd: cleanup nfsd_file_lru_dispose()
  nfsd: Containerise filecache laundrette
  nfsd: Remove unused constant NFSD_FILE_LRU_RESCAN
  nfsd: Schedule the laundrette regularly irrespective of file errors
  nfsd: Reduce the number of calls to nfsd_file_gc()

 fs/nfsd/filecache.c | 285 ++++++++++++++++++++++++++++++++++----------
 fs/nfsd/filecache.h |   2 +
 fs/nfsd/nfssvc.c    |   9 +-
 3 files changed, 230 insertions(+), 66 deletions(-)