[PATCH v7 0/3] io_uring: add getdents64 support

[Stefan Roesch <shr@fb.com>]

This series adds support for getdents64 in liburing. The intent is to
provide a more complete I/O interface for io_uring.

Patch 1: fs: add offset parameter to iterate_dir function.
  This adds an offset parameter to the iterate_dir()
  function. The new parameter allows the caller to specify
  the offset to use.

Patch 2: fs: split off vfs_getdents function from getdents64 system call
  This splits of the iterate_dir part of the syscall in its own
  dedicated function. This allows to call the function directly from
  io_uring.

Patch 3: io_uring: add support for getdents64
  Adds the functions to io_uring to support getdents64.

There is also a patch series for the changes to liburing. This includes
a new test. The patch series is called "liburing: add getdents support."

The following tests have been performed:
- new liburing getdents test program has been run
- xfstests have been run
- both tests have been repeated with the kernel memory leak checker
  and no leaks have been reported.


V7: - add loff_t *parameter to iterate_dir function
    - remove do_iterate_dir function
    - change callers of iterate_dir function
v6: - rebased patch series
v5: - remove old patch (v4 contained a patch file from v3)
V4: - silence compiler warnings
V3: - add do_iterate_dir() function to Patch 1
    - make iterate_dir() function call do_iterate_dir()
      This has the advantage that the function signature of iterate_dir
      does not change
V2: - updated the iterate_dir calls in fs/ksmbd, fs/ecryptfs and arch/alpha with
      the additional parameter.


Stefan Roesch (3):
  fs: add offset parameter to iterate_dir function
  fs: split off vfs_getdents function of getdents64 syscall
  io_uring: add support for getdents64

 arch/alpha/kernel/osf_sys.c   |  2 +-
 fs/ecryptfs/file.c            |  2 +-
 fs/exportfs/expfs.c           |  2 +-
 fs/internal.h                 |  8 +++++
 fs/io_uring.c                 | 52 +++++++++++++++++++++++++++++
 fs/ksmbd/smb2pdu.c            |  3 +-
 fs/ksmbd/vfs.c                |  4 +--
 fs/nfsd/nfs4recover.c         |  2 +-
 fs/nfsd/vfs.c                 |  2 +-
 fs/overlayfs/readdir.c        |  6 ++--
 fs/readdir.c                  | 62 +++++++++++++++++++++++++----------
 include/linux/fs.h            |  2 +-
 include/uapi/linux/io_uring.h |  1 +
 13 files changed, 119 insertions(+), 29 deletions(-)


base-commit: d09358c3d161dcea8f02eae1281bc996819cc769
-- 
2.30.2