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[RFC,-next,0/2] fuse: Parallel DIO writes with O_DIRECT

Message ID 20230821174753.2736850-1-bschubert@ddn.com (mailing list archive)
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Series fuse: Parallel DIO writes with O_DIRECT | expand

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Bernd Schubert Aug. 21, 2023, 5:47 p.m. UTC 
In commit 153524053bbb fuse gained the possibility to do parallel
DIO writes, when FOPEN_DIRECT_IO and FOPEN_PARALLEL_DIRECT_WRITES
are set. If server side only sets FOPEN_PARALLEL_DIRECT_WRITES,
but does not set FOPEN_DIRECT_IO, O_DIRECT from the application
is still serialized.
fuse-next has changes in commits b5a2a3a0b776/80e4f25262f9, which
allow to take the optimized (in respect to parallel DIO) code path,
dirty page flush and page invalidation have to be done unconditionally,
though.

v2:
Rebase to 6.5/6.6-fuse-next

Bernd Schubert (2):
  [RFC for fuse-next ] fuse: DIO writes always use the same code path
  libfs: Remove export of direct_write_fallback

 fs/fuse/file.c | 27 +++++++++------------------
 fs/libfs.c     |  1 -
 2 files changed, 9 insertions(+), 19 deletions(-)

Cc: Hao Xu <howeyxu@tencent.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Dharmendra Singh <dsingh@ddn.com>
Cc: linux-fsdevel@vger.kernel.org