News: 0001508213

  ARM Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life (Terry Pratchett, Jingo)

FUSE Enhancements Submitted For Linux 6.13

([Linux Storage] 90 Minutes Ago Linux 6.13 FUSE)


The FUSE feature enhancements were submitted today for the [1]Linux 6.13 kernel as part of improving the file-system in user-space capabilities.

One of the notable FUSE changes for Linux 6.13 is allowing the maximize size of FUSE requests to be configurable via a new sysctl setting. The "FUSE_MAX_MAX_PAGES" value now can be configured via the "fs.fuse.max_pages_limit" sysctl tunable or as /proc/sys/fs/fuse/fuse_max_max_pages . Up to now FUSE defaulted to 256 as the maximum number of pages which for a 4K page-size kernel meant just a maximum write size of 1MB.

In turn increasing this max_pages_limit for FUSE can allow for better performance by taking advantage of a larger maximum write size. Quadrupling the fuse_max_max_pages value to 1024 has yielded a nice performance improvement in some situations.

The FUSE code in Linux 6.13 also completes more page to folio conversions and brings several fixes. More details on the FUSE changes via [2]this pull request .



[1] https://www.phoronix.com/search/Linux+6.13

[2] https://lore.kernel.org/lkml/CAJfpegvCr7hBSqU8iqKUCZ3i5wUyiiyfbCtP_NO37OGMA2RVPw@mail.gmail.com/


phoronix

"Many have seen Topaxci, God of the Red Mushroom, and they earn the
name of shaman," he said. Some have seen Skelde, spirit of the smoke, and
they are called sorcerers. A few have been privileged to see Umcherrel, the
soul of the forest, and they are known as spirit masters. But none have
seen a box with hundreds of legs that looked at them without eyes, and they
are known as idio--"
The interruption was caused by a sudden screaming noise and a flurry
of snow and sparks that blew the fire across the dark hut; there was a brief
blurred vision and then the opposite wall was blasted aside and the
apparition vanished.
There was a long silence. Then a slightly shorter silence. Then
the old shaman said carefully, "You didn't just see two men go through
upside down on a broomstick, shouting and screaming at each other, did you?"
The boy looked at him levelly. "Certainly not," he said.
The old man heaved a sigh of relief. "Thank goodness for that," he
said. "Neither did I."
-- Terry Pratchett, "The Light Fantastic"