[RFC PATCH v2 0/2] Make NFSD use the vfs_iocb_iter APIs

[Chuck Lever <cel@kernel.org>]

From: Chuck Lever <chuck.lever@oracle.com>

Mike has expressed interest in making NFSD perform direct, uncached,
or asynchronous I/O, independent of how the target file might have
been opened by the file cache. To do that, the idea is to pass in
RWF_ flags during each VFS read and write.

However, Christoph suggested APIs that already exist which
streamline the I/O operation a bit and expose the per-I/O flag
setting directly. The suggestion looks to me like a straightforward
and sensible general clean up of these code paths.

This series refactors nfsd_iter_read() and nfsd_vfs_write() to use
those APIs instead of vfs_iter_read() and vfs_iter_write(),
respectively, as a first baby step down this path. No behavior
change is expected.

Chuck Lever (2):
  NFSD: Use vfs_iocb_iter_read()
  NFSD: Use vfs_iocb_iter_write()

 fs/nfsd/vfs.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

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2.49.0