[0/9] fuse: readdir caching

Message

Miklos Szeredi Sept. 28, 2018, 3:42 p.m. UTC

Allow caching readdir in fuse.  Use the page cache for this, which solves
cache shrinking on memory pressure.

I think it might make sense to extract something like this into a set of
VFS helpers, so that other filesystems can also make use of this facility.

Thanks,
Miklos

---
Miklos Szeredi (9):
  fuse: split out readdir.c
  fuse: add FOPEN_CACHE_DIR
  fuse: extract fuse_emit() helper
  fuse: allow caching readdir
  fuse: allow using readdir cache
  fuse: add readdir cache version
  fuse: use mtime for readdir cache verification
  fuse: use iversion for readdir cache verification
  fuse: reduce size of struct fuse_inode

 fs/fuse/Makefile          |   2 +-
 fs/fuse/dir.c             | 293 +++---------------------
 fs/fuse/file.c            |  10 +
 fs/fuse/fuse_i.h          |  83 ++++++-
 fs/fuse/inode.c           |  11 +-
 fs/fuse/readdir.c         | 567 ++++++++++++++++++++++++++++++++++++++++++++++
 include/uapi/linux/fuse.h |   7 +-
 7 files changed, 688 insertions(+), 285 deletions(-)
 create mode 100644 fs/fuse/readdir.c