[PATCH v3 0/3] io_uring: add getdents64 support

Stefan Roesch
2021-11-25T23:28:10Z

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 parameter use_fpos to iterate_dir()
This adds a new parameter to the function iterate_dir() so the
caller can specify if the position is the file position or the
position stored in the buffer context.

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
liburing.

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.

Signed-off-by: Stefan Roesch <shr@fb.com>
---
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 parameter use_fpos to iterate_dir function
fs: split off vfs_getdents function of getdents64 syscall
io_uring: add support for getdents64

fs/internal.h | 8 +++++
fs/io_uring.c | 52 +++++++++++++++++++++++++++++
fs/readdir.c | 61 ++++++++++++++++++++++++++++-------
include/uapi/linux/io_uring.h | 1 +
4 files changed, 110 insertions(+), 12 deletions(-)

base-commit: de5de0813b7dbbb71fb5d677ed823505a0e685c5
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2.30.2