Re: [PATCH] FUSE: Improve aio directIO write performance for size extending writes.

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On Thu, Jun 16, 2016 at 2:36 PM, Miklos Szeredi <miklos@xxxxxxxxxx> wrote:
> On Thu, Jun 16, 2016 at 2:22 PM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
>
>> Can you point me to - preferable - a Git repo of libfuse?
>
> https://github.com/libfuse
>
>> And the commit for backporting?
>
> 8bb62a632caa ("libfuse: Add "async_dio" and "writeback_cache" options")
>

[1] says...

"libfuse: Add "async_dio" and "writeback_cache" options

Asynchronous direct I/O is supported by linux kernels 3.13 and
later, writeback caching is supported by 3.14 and later."

Here on Ubuntu/precise I have HWE enabled which ships officially
Linux-kernel v3.13.
According to above log I need at least v3.14 for both features.

Not sure if backporting is easy-to-apply for v3.13.

IIRC Debian maintains a 3.16 LTS kernel.

AFAICS libfuse v2.9.6 which is not available in any Ubuntu release [4]
has this change.
I can build with the sources from Debian [5].

Hmm, maybe it's time to switch over to Ubuntu/xenial or a modern Debian system.

- Sedat -

[1] https://github.com/libfuse/libfuse/commit/8bb62a632caa4269bb6436cae67307404882b936
[2] https://github.com/libfuse/libfuse/releases
[3] http://git.kernel.org/cgit/linux/kernel/git/mszeredi/fuse.git/commit/?h=for-next&id=507c552aa58fa48fdea1373948cfc0a1fd0bf61b
[4] https://packages.ubuntu.com/libfuse
[5] https://packages.debian.org/ibfuse
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