Jens Axboe
axboe.bsky.social
Jens Axboe
@axboe.bsky.social
Linux kernel IO dabbler @ Meta

@[email protected]
marcan on leaving the Asahi project: "No matter how much we did, how many impossible feats we pulled off, people always wanted more. And more."

Yep this is basically ANY open source project. Doesn't matter what you give people, they will always complain about something.
February 13, 2025 at 7:06 PM
The networking side of the io_uring receive zero-copy support was finally merged, it's queued for the 6.15 kernel. See this merge for details:

git.kernel.org/pub/scm/linu...

Now we just need to stage the io_uring side on top of that! Exciting to finally see this happening.
Merge branch 'io_uring-zero-copy-rx' - kernel/git/netdev/net-next.git - Netdev Group's -next networking tree
git.kernel.org
February 7, 2025 at 2:17 PM
epoll wait support for io_uring. This may seem like an odd thing, but it's handy for mixed use cases or event loop conversions. See the cover letter linked below for details:

lore.kernel.org/linux-fsdeve...

and code:

git.kernel.dk/cgit/linux/l...
[PATCHSET 0/9] io_uring epoll wait support
lore.kernel.org
February 3, 2025 at 4:39 PM
The core of this work is now upstream in Linus's tree, and the per-fs bits have been rebased on top of that:

git.kernel.dk/cgit/linux/l...

xfs/btrfs/nfs should be fine to include, ext4 would ideally need an iomap conversion first.
January 29, 2025 at 2:29 PM
Reposted by Jens Axboe
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kernel-recipes.org
January 12, 2025 at 8:29 PM
Posted v8 of the uncached buffered IO patchset. This should be fine for merging at this point, let's hope we can make the 6.14 kernel release.

lore.kernel.org/linux-fsdeve...

Separate branches exist for the core support and fs support, see the cover letter for details.
[PATCHSET v8 0/12] Uncached buffered IO
lore.kernel.org
December 20, 2024 at 3:52 PM
Interesting memcached experiment from @UWaterloo showing some nice wins. Maybe 2025 will be the year of io_uring networking.

git.uwaterloo.ca/lseo/io_uring
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git.uwaterloo.ca
December 9, 2024 at 9:39 PM